[Ichthyology • 2023] Glyptothorax irroratus • A New Species of rheophilic catfish (Siluriformes: Sisoridae) from the Mekong River drainage

Glyptothorax irroratus

Ng a& Kottelat, 2023 

DOI: doi.org/10.1080/00222933.2023.2186278 

 

ABSTRACT

Glyptothorax irroratus, a new species of sisorid catfish from the Mekong River drainage in Laos and China, is described. It differs from its Indochinese congeners in having both large and small tubercles arranged irregularly on the lateral surfaces of the body and by combinations of colour pattern, morphometry (with particular regards to the eye, body depth, adipose fin and caudal peduncle) and thoracic adhesive apparatus morphology.

 

KEYWORDS: Sisoroidea, Sisorinae, Bagariini, Mekong River

Glyptothorax irroratus sp. nov.

Etymology: The Latin adjective irroratus (-us, -a, -um) means covered with dew; in zoology used to mean besprinkled with drops or particles. This is used in allusion to the irregular tuberculation on the sides of the body and caudal peduncle.

Heok Hee Ng and Maurice Kottelat. 2023. Glyptothorax irroratus, A New Species of rheophilic catfish from the Mekong River drainage (Actinopterygii: Siluriformes: Sisoridae). Journal of Natural History. 57(5-8); 358-371. DOI: doi.org/10.1080/00222933.2023.2186278 

[Herpetology • 2024] Kaloula discordia & K. laosensis • Phylogeographic Pattern and Taxonomic Revision of the Kaloula baleata species complex (Anura: Microhylidae) with Description of Two New Species from Indochina

 Kaloula discordia Poyarkov, Gorin, Bragin & Nguyen,

South Vietnamese Painted Frog | Ễnh ương Nam bộ

  Kaloula laosensis Poyarkov, Orlov, Gorin & Milto,

Laotian Painted Frog | “ອື່ງຢາງລາວ

in Gorin, Orlov, Bragin, Pawangkhanant, Milto, Le, Nguyen, Dufresnes, Suwannapoom et Poyarkov, 2024. 

DOI: doi.org/10.3897/herpetozoa.37.e137394 

Photographs by A.M. Bragin and N.L. Orlov.

Abstract

Despite increased attention by molecular taxonomists, the herpetofauna of Southeast Asia still hides many undescribed species among far-ranging taxa. In this study, we re-examine the mitochondrial diversity of painted frogs of the microhylid genus Kaloula, based on ~2,455 bp of published and new 12S and 16S rRNA sequences, and describe two new species from the tropical forests of southern Vietnam and central Laos based on integrative evidence. These species, which belong to the K. baleata complex, feature species-level mitochondrial divergence (> 4.4% at 16S rRNA) and are both morphologically well-differentiated from each other and from the recently described K. indochinensis, to which they were previously confounded. Comparative examinations also indicate distinct male advertisement calls and unique coloration features. Based on genetic barcoding, we preliminarily revise the species distribution ranges in the K. baleata complex, which support a general pattern of biogeographic partitioning that has been widely retrieved among the Indochinese amphibians studied so far. Molecular diversity within K. baleata further suggests genetic structure across Sundaland, namely three shallow mitochondrial haplogroups worthy of fine-scale phylogeographic and taxonomic investigations. Furthermore, our study highlights the propensity of amphibian species “hidden in plain sight,” even among recently studied taxa, thus calling for caution when specifying type specimens—the type series of K. indochinensis, described in 2013, includes specimens of the one of the new species. Our study emphasizes the continued need for thorough herpetological surveys even in supposedly well-known parts of Indochina and sets the ground for future research in Kaloula painted frogs, notably to test evolutionary and taxonomic hypotheses with genomic loci.

Key Words: 16S rRNA, bioacoustics, DNA barcoding, Laos, morphology, Southeast Asia, systematics, taxonomy, Vietnam

Genealogical relationships of the genus Kaloula based on the analysis of mtDNA fragments, including 12S rRNA, tRNAVal, and 16S rRNA gene sequences. Numbers at tree nodes correspond to PP/UFB support values, respectively. Black circles correspond to well-supported (PP ≥ 0.95 or UFB ≥ 90) nodes. Numbers in bold following sample names correspond to localities in Fig. 1 and Table 1. The information on GenBank Accession Numbers, museum vouchers, and localities of origin for sequences used in this study is summarized in Table 1. The holotypes of Kaloula discordia sp. nov. and Kaloula laosensis sp. nov. are marked with asterisks (*H). Photographs by N.A. Poyarkov and N.L. Orlov.

 

Known distribution of the Kaloula baleata species complex members in Indochina.

 

Breeding habitats of Kaloula discordia sp. nov. (A, B) and lateral view of holotype of Kaloula discordia sp. nov. in situ (ZMMU A-8134) (C).

Photographs by A.M. Bragin.

 Kaloula discordia Poyarkov, Gorin, Bragin & Nguyen, sp. nov.

Diagnosis: Kaloula discordia sp. nov. is distinguished from its congeners by the following combination of morphological characters: (1) medium body size (SVL 42.9–56.2 mm); (2) eyes comparatively small (eye length comprising 60%–75% of snout length); (3) dorsally uniform dark olive-brown; (4) beige-gray ventrally with irregular white mottling on belly and limbs; (5) pale yellow or orange-brown 8-shaped patch on either side of the neck posterior to eyes; (6) yellowish to orange axillary patch present; (7) grayish to beige-yellow inguinal patch present edged with black markings; (8) from gray to beige spot on tibiotarsal articulation present; (9) dark interorbital bar absent; (10) enlarged, widened finger disks (3FDD 6.5%–7.5% of SVL), ca. 1.27 times wider than toe disks; (11) finger subarticular tubercle formula: 1:1:2:2; (12) toe subarticular tubercle formula: 1:1:2:2:2; (13) two metacarpal tubercles not in touch with each other; (14) two metatarsal tubercles, outer metatarsal tubercle rounded, smaller than elongated inner metatarsal tubercle.

Etymology: The specific epithet “discordia” is a noun in apposition, in the nominative case, given in reference to the Roman mythological goddess Discordia. According to the poet Hesiod, this goddess personified not only strife and discord but also competition and labor (Hesiod, Theogony: 20–24, 226–230; see Most 2006). The duality of this name echoes the two aspects of the discovery of the new species. The first aspect is the authors’ hard work and laborious approach in collecting data for the description of the new species. The second challenge pertains to the authors’ internal struggle to choose a politically correct and neutral name for the new species. In modern taxonomy, international teams often face the common challenge of strife and competition; however, this can also lead to overall scientific progress. 

We recommend “South Vietnamese Painted Frog” as the common name in English, “Yuzhnovietnamskiy Bychiy Uzkorot” as the common name in Russian, and “Ễnh ương Nam bộ” as the common name in the Vietnamese language.

Dorsolateral (A) and frontal (B) views of the holotype of Kaloula laosensis sp. nov. in situ (ZISP 15284, male).

Photographs by N.L. Orlov.

  Kaloula laosensis Poyarkov, Orlov, Gorin & Milto, sp. nov.

Diagnosis: Kaloula laosensis sp. nov. is distinguished from its congeners by the following combination of morphological attributes: (1) medium size (SVL ranging 44.0–54.8 mm); (2) eyes comparatively large (eye length comprising 75%–100% of snout length); (3) dark-brown dorsally, with numerous irregular dark blotches forming pericloacal ring; (4) gray or beige ventrally with dense white mottling on belly and limbs; (5) orange triangular patch on either side of the neck posterior to eyes; (6) bright-orange axillary patch present; (7) orange inguinal patch present; (8) bright-orange butterfly-shaped blotch above cloaca present; (9) gray spot on tibiotarsal articulation present; (10) dark interorbital bar present; (11) enlarged, widened finger disks (7.8%–7.9% of SVL), ca. 1.53 times wider than toe disks; (12) finger subarticular tubercle formula: 1:1:2:2; (13) toe subarticular tubercle formula: 1:1:2:2:2; (14) three metacarpal tubercles, median metacarpal tubercle in contact with inner metacarpal tubercle; (15) two metatarsal tubercles, inner metatarsal tubercle ca. three times larger than outer metatarsal tubercle; (16) three small supernumerary tubercles at the basis of toes I, III, IV. 

Etymology: The specific epithet “laosensis” is an adjective in the nominative case, given in reference to the new species’ distribution in central Laos. The name also mirrors the specific epithet of K. indochinensis, with which the new species was previously confused. We recommend “Laotian Painted Frog” as the common English name, “Laosskiy bychiy uzkorot” as the common name in Russian, “Ễnh ương Lào” as the common name in Vietnamese, and “ອື່ງຢາງລາວ” (“Ung Yang Lao”) as the common name in Lao languages.

 Vladislav A. Gorin, Nikolai L. Orlov, Andrey M. Bragin, Parinya Pawangkhanant, Konstantin D. Milto, Dac Xuan Le, Tan Van Nguyen, Christophe Dufresnes, Chatmongkon Suwannapoom and Nikolay A. Poyarkov. 2024. Phylogeographic Pattern and Taxonomic Revision of the Kaloula baleata species complex (Amphibia, Anura, Microhylidae) with Description of Two New Species from Indochina. Herpetozoa. 37: 391-420.  DOI: doi.org/10.3897/herpetozoa.37.e137394 

[Botany • 2024] Perilimnastes aura (Melastomataceae: Sonerileae) • A New Species from Dak Cheung Plateau, Sekong province, Southern Laos

Perilimnastes aura  

in Souvannakhoummane, Lamxay, Lanorsavanh et Liu. 2024. 

DOI: 10.11646/phytotaxa.670.1.8

facebook.com: ແກ້ວອຸດອນ ສຸວັນນະກຸມມານ 

Abstract

Perilimnastes aura, a species found in Sekong province, Laos, is described as new. Its habit and morphology of leaves, inflorescences, flowers, and capsules match all diagnostic features of Perilimnastes. It most closely resembles P. suberalata in the quadrangular stems, unequal leaves, and glabrescent, oblanceolate to broadly elliptic leaf blade, but differs in the acute leaf apex (vs. acuminate), 1–3-flowered inflorescence (vs. 1-flowered), quadrangular hypanthium (vs. obtusely quadrangular) and broadly triangular, 1.8–2.2 mm long calyx lobes (vs. linear, 8–10 mm long). Information on habitat, ecology, and a preliminary assessment of the conservation status are also provided for the new species.

Phyllagathis, new description, new taxa, evergreen mountains, taxonomy, Eudicots

Perilimnastes aura sp. nov.

Keooudone Souvannakhoummane, Vichith Lamxay, Soulivanh Lanorsavanh and Ying Liu. 2024. Perilimnastes aura (Sonerileae, Melastomataceae), A New Species from Dak Cheung Plateau, Sekong province, Southern Laos. Phytotaxa. 670(1); 77-82. DOI: doi.org/10.11646/phytotaxa.670.1.8

ພືດຊະນິດໃຫມ່ຂອງໂລກ, ຖີ່ນກຳເກີດຈາກພູພຽງດັກຈຶງ, ແຂວງເຊກອງ. 

 facebook.com/Baffaloricefield/posts/8797821660277526

[Botany • 2024] Dalbergia calcarea (Fabaceae: Dalbergieae) • A New Species from Lao PDR

Dalbergia calcarea Lanors., Mattapha & Lamxay, 

in Mattapha, Lanorsavanh, Lamxay; Souvannakhoummane et Chanthavongsa, 2024. 

 ຄໍາພີ້ເຫຼືອງ  ||  DOI: 10.20531/tfb.2024.52.2.08

Abstract

Dalbergia calcarea, a new species currently only known from the limestone mountains of Khammouan Province, central Laos, is described and illustrated. The key characters such as habit, colour and limb of standard, and number of ovules of the new species are discussed and compared with its closest relatives. A detailed description along with etymology, conservation status, illustrations and colour photographs are provided for a new species. This discovery increases the number of Laotian species in the genus Dalbergia to seventeen taxa.

Keywords: Faboideae, Indo-China, Laos, new taxon, taxonomy

Dalbergia calcarea Lanors., Mattapha & Lamxay: 
A. Leaves and inflorescences; B. Leaf; C. Leaflet; D. Flower; E. Standard, outer surface (left) & inner surface (right); F. Wing petals; G. Keel petals; H. Stamens & calyx; I. Ovary; J. Fruits bearing one seed; K. Fruit bearing 4 seeds.

 A–I: S. Lanorsavanh & V. Lamxay SL1641; J & K: S. Lanorsavanh & K. Souvannakhoummane SL1721. 

Drawn by Keooudone Souvannakhoummane.

Dalbergia calcarea Lanors., Mattapha & Lamxay:
 A. Leaves and inflorescences; B. Close up of flowers; C. Flowers (front view, left; side view, right); D. Wing petals; E. Keel petals; F. Stamens enclosing the ovary, inside the calyx; G. Fruits.

Photos by Soulivanh Lanorsavanh.

Dalbergia calcarea Lanors., Mattapha & Lamxay, sp. nov.

This species is characterised by being a tree, leaves with 9–33 leaflets with equal-sided lateral bases, the limb of the standard petal 7–8 mm long, monadelphous stamens (5+5), a pubescent ovary with 3–6 ovules and glabrous fruits. It resembles Dalbergia pinnata (Lour.) Prain in having a similar shape and size of the leaflets, however, it is distinct by the equal-sided bases of the lateral leaflets (vs strongly unequal-sided in D. pinnata), leaflets pubescent on both sides (pubescent only on lower surface in D. pinnata), longer inflorescences (4–6.5 cm long vs 2–3 cm long in D. pinnata), larger bracts (2–)4–6 × 2–2.5 mm vs ca 0.5 × 0.2 mm in D. pinnata),the limb of the standard petal broadly obovate, 7–8 mm long (vs orbicular, 1–2 mm long in D. pinnata) and ten stamens (vs 9 stamens in D. pinnata). 

Type: Lao PDR, Khammouan Province, Khounkham Distr., Phou Pha Man Hill, mixed deciduous forests on limestone mountains, ca 325 m, ...

Etymology.— The specific epithet refers to the habitat of the species where it grows on the range of karst. 

Vernacular.— ຄໍາພີ້ເຫຼືອງ (Kham pee lueang).

Sawai Mattapha, Soulivanh Lanorsavanh, Vichith Lamxay; Keooudone Souvannakhoummane and Khamfa Chanthavongsa. 2024. Dalbergia calcarea, A New Species of Dalbergia (Fabaceae: Dalbergieae) from Lao PDR. Thai Forest Bulletin (Botany). 52(2), 62–67. DOI:  doi.org/10.20531/tfb.2024.52.2.08

[Entomology • 2024] Anisandrus bolavenensis • A New Species of ambrosia Beetle (Coleoptera: Curculionidae: Scolytinae: Xyleborini) from Laos

Anisandrus bolavenensis 

 Sittichaya & Smith, 2024

DOI: 10.3897/BDJ.12.e130023

 

Abstract

Background: The ambrosia beetle genus Anisandrus Ferrari, 1867, is a member of the bark and ambrosia beetle subfamily Scolytinae, Tribe Xyleborini. Currently, it is comprised of 40 species of which four species were recorded in Laos.

New information: A new species, Anisandrus bolavenensis sp. nov. is described from the Bolaven Plateau in southern Laos. With the inclusion of the species described and recorded here, the diversity of Anisandrus is increased to 41 species, of which five occur in Laos. New distribution records, a synoptic list and a key to the Anisandrus of Laos PDR are presented.

Anisandrus bolavenensis sp. nov. holotype female
A dorsal view; B lateral view; C postero-lateral view; D pronotum; E frons; F antenna; G pro- and mesotibiae.

Anisandrus bolavenensis sp. nov.

Diagnosis: 

2.4 mm long (n = 1); 1.71× as long as wide. Small and stout species. Pronotal anterior margin slightly angularly projecting, median pair of asperities on anterior margin not prominent; elytral disc broadly convex, strongly shiny, without a saddle-like impression, declivity appears more obliquely sloped as compared to many other Anisandrus species, declivital summit unarmed, declivity flat from interstriae 1–3, declivity unarmed, densely covered with interstrial setae, setae very long, 3–4× as long as interstrial width; striae distinctly impressed; strial punctures shallow, 2× larger than those of disc, striae with fine recumbent, hair-like setae, setae 2–2.5× as long as diameter of punctures, setae pointing inward to declivital medial suture.

This species is similar to A. auco, A. cryphaloides and A. tanaosi. It can be distinguished from ...

Etymology: Bolavenensis, in reference to the collection locality of the holotype, Bolaven Plateau, Lao People's Democratic Republic. Noun in apposition.

Biology: The holotype was collected from a newly fallen (leaves still green) small branch of Symplocos sp. (Symplocaceae).

Wisut Sittichaya and Sarah M. Smith. 2024. Anisandrus bolavenensis sp. nov. (Col.: Curculionidae, Scolytinae, Xyleborini), A New ambrosia Beetle from Laos. Biodiversity Data Journal. 12: e130023. DOI: doi.org/10.3897/BDJ.12.e130023

[Botany • 2024] Nymphanthus namkadingensis (Phyllanthaceae) • A New Species from Laos

Nymphanthus namkadingensis Tk.Yamam., Tagane & Soulad., 

in Yamamoto, Souladeth, Phonepaseuth, Kongxaisavath, Vongthavone, Vuong, Trong, Souvannakhoummane et Tagane, 2024. 

ໝາກຍົມນ້ອຍນ້ຳກະດິງ  ||  DOI: 10.11646/phytotaxa.650.3.1

 

Abstract

A new species of Nymphanthus (Phyllanthaceae), N. namkadingensis from Bolikhamxai Province, central Laos, is described and illustrated, along with its vernacular name and preliminary conservation status. The new species is similar to N. rubescens, but distinguished by having larger stipules, longer pedicels, and connate annular disc glands (vs. free disc glands) of pistillate flowers.

Key words: flora, Indochina, Malpighiales, Phyllantheae, taxonomy 

Nymphanthus namkadingensis Tk.Yamam., Tagane & Soulad.
(A, E–G, I–M. Tagane et al. Z74; B–D. Souladeth et al. Z595; H. Tagane et al. Z128). A. Habitat; B. Habit; C, D. Portion of floriferous branchlet showing adaxial and abaxial leaf surfaces respectively; E. Abaxial leaf surface; F. Stipule; G. Staminate flower (front view); H. Staminate flowers (lateral view); I. Enlarged view of staminate flower showing stamens and disc glands; J. Pistillate flower (lateral view, sepals detached); K & L. Ovary (lateral view & overhead view, respectively); M. Fruit just before dehiscence.

Abbreviations: an, theca of anther; dp, disc gland of pistillate flower; ds, disc gland of staminate flower; ov, ovary, sy, style. Scale bars E = 5 mm, F = 3 mm, I–L = 0.5 mm, and M = 1 mm. 

Photos: T. Yamamoto (A, E, F, I–M), K. Souvannakhoummane (B), P. Souladeth (C, D), and S. Tagane (G, H).

Nymphanthus namkadingensis Tk.Yamam., Tagane & Soulad., sp. nov. 

Nymphanthus namkadingensis is distinguished from the other members of Nymphanthus by having combination of following features: branches and branchlets glabrous, stipules of 3–9 × 1–2 mm, ovate-lanceolate laminae of 14–25 × 5–8 mm with 8–12 pairs of lateral veins, reddish purple sepals with slightly undulate (non-fimbriate) margins, annular disc glands of pistillate flowers, and glabrous ovaries. Among Nymphanthus species distributed in Laos and its adjoining countries, the new species is most similar to N. rubescens distributed in Laos and Vietnam in having floriferous branchlets rather congested near ...

Etymology:—The specific epithet namkadingensis is derived from Nam Kading National Protected Area, in which the species was first discovered. 

Vernacular name:— ໝາກຍົມນ້ອຍນ້ຳກະດິງ [Mak yom noy namkading (“Mak yom” means Nymphanthus species in general in Lao; “noy” means small fruit), suggested here].

Takenori Yamamoto, Phetlasy Souladeth, Phongphayboun Phonepaseuth, Deuanta Kongxaisavath, Thyraphon Vongthavone, Truong Ba Vuong, Pham Quoc Trong, Keooudone Souvannakhoummane and Shuichiro Tagane. 2024. Nymphanthus namkadingensis, A New Species of Phyllanthaceae from Laos.  Phytotaxa. 650(3); 199-205. DOI: 10.11646/phytotaxa.650.3.1

 

[Botany • 2024] Amischotolype balslevii (Commelinaceae: Tradescantieae) • A New Species from Thailand

  

Amischotolype balslevii Boonsuk, Chantar. & Kantachot, 

in Boonsuk, Chantaranothai et Kantachot, 2024.

ม่วงศรีอุดร  ||  DOI: 10.3767/blumea.2024.69.01.06

 www.science.UP.ac.th

 Photographs by B. Boonsuk.

Abstract 

Amischotolype balslevii (Commelinaceae), a new species from Ban Dung, Udon Thani, northeastern Thailand is presented. The new species is distinguished from the resembling taxa, A. divaricata and A. gracilis, by its puberulent to glabrous stem nodes, glabrous leaf sheaths and pseudo-petioles, longer sepals, and ellipsoid and purplish white fruits. A morphological description and illustrations are provided, along with information on the species distribution, habitat, and conservation status.

Keywords: Amischotolype; Commelinaceae; Thailand; fruit; sepal

Amischotolype balslevii Boonsuk, Chantar. & Kantachot.
a. Habit; b. leaf sheath, mouth, and pseudopetiole; c. leaf margin and submarginal hairs on upper surface; d. inflorescence; e. young capsule with sepals; f. infructescence; g. mature capsule with sepals and bracteoles; h. seeds.

 Scale bars: b, e = 1 cm; c = 2 cm; g = 1 mm; h = 3 mm. 

 Photographs by B. Boonsuk.

 

Amischotolype balslevii Boonsuk, Chantar. & Kantachot, sp. nov. 

 Nodes puberulent to glabrous; leaf sheaths, lower surface of pseudo-petioles, sepals and filaments glabrous; sepals 10–14 mm long; fruits ellipsoid, 16–18 mm long, purple-white.

Etymology. The name of this species honours Professor Henrik Balslev, Aarhus University, Denmark, who encouraged the authors to conduct research on the Commelinaceae for the Flora of Thailand Project.

 Boonchuang Boonsuk, Pranom Chantaranothai and Chortip Kantachot. 2024. A New Species of Amischotolype Hassk. (Commelinaceae: Tradescantieae) from Thailand. Blumea - Biodiversity, Evolution and Biogeography of Plants. DOI: 10.3767/blumea.2024.69.01.06

 www.science.UP.ac.th/new/1035

  

 ม่วงศรีอุดร (Amischotolype balslevii Boonsuk, Chantar. & Kantachot) พืชชนิดใหม่ของโลก ในวงศ์ผักปลาบ (Commelinaceae) ถูกค้นพบโดย ผศ.ดร.บุญช่วง บุญสุข จากสาขาวิชาชีววิทยา คณะวิทยาศาสตร์ มหาวิทยาลัยพะเยา ร่วมกับ ศ.ดร.ประนอม จันทรโณทัย จากภาควิชาชีววิทยา คณะวิทยาศาสตร์ มหาวิทยาลัยขอนแก่น และ ผศ.ดร.ช่อทิพย์ กัณฑโชติ จากภาควิชาวิทยาศาสตร์ชีวภาพ คณะวิทยาศาสตร์ มหาวิทยาลัยอุบลราชธานี ในการดำเนินการศึกษาวิจัยทบทวนทางอนุกรมวิธานของพืชวงศ์ผักปลาบสำหรับโครงการพรรณพฤกษชาติแห่งประเทศไทย (Flora of Thailand) ซึ่งได้รับงบประมาณสนับสนุนจากทุนสนับสนุนงานพื้นฐาน (Fundamental Fund) พ.ศ. 2565 โดยได้ตีพิมพ์เผยแพร่ลงในวารสาร Blumea เล่มที่ 69 หน้า 50 ค.ศ. 2024 (DOI: https://doi.org/10.3767/blumea.2024.69.01.06) คำระบุชนิด “balslevii” ตั้งขึ้นเพื่อเป็นเกียรติแก่ Prof. Henrik Balslev ผู้เชี่ยวชาญด้านพฤกษศาสตร์แห่งมหาวิทยาลัยออร์ฮุส ประเทศเดนมาร์ก

          พืชชนิดนี้มีลักษณะเด่นเป็นพืชล้มลุกปีนป่าย ลำต้น กาบใบ และแผ่นใบมีผิวเกลี้ยง กลีบเลี้ยงมีสีม่วง ผลมีสีขาวแกมม่วง ยาวมากกว่ากลีบเลี้ยง สำหรับตัวอย่างต้นแบบแรกของพืชชนิดนี้เก็บจากพื้นที่ อ.บ้านดุง จ.อุดรธานี นอกจากนี้ยังพบว่าพืชชนิดนี้มีการกระจายพันธุ์ในอีกหลายจังหวัดของประเทศไทย ได้แก่ เลย บึงกาฬ นครพนม ชลบุรี และจันทบุรี รวมถึงในประเทศลาวอีกด้วย

[Botany • 2024] Microchirita argostemmiflora, M. flavofusca, M. magniflora • Three New Species from Khammouane Karst [Studies on the Gesneriaceae in Laos I]

ດອກລະຄັງຫວງ  ||  Microchirita magniflora Souvann. 

in Souvannakhoummane et Lanorsavanh, 2024. 

  li01.tci-thaijo.org/index.php/TNH

 facebook.com/BioFNS

Photos by K. Souvannakhoummane.

Abstract

 Three new species of Microchirita from the Khammouane Karst are here described as part of studies on the family Gesneriaceae in Laos. The description, habitat, phenology, vernacular name, initial IUCN assessment, illustration, and photographs of the new taxa are provided.

Keywords: Hin Nam No National Park, limestone flora, new taxa, taxonomy

Microchirita argostemmiflora Souvann. & Lanors.:
A. habit; B. flower, front view; C. flower, back view; D. anthers.

    All from LP140. Photos by K. Souvannakhoummane & S. Lanorsavanh.

Microchirita argostemmiflora Souvann. & Lanors., sp. nov. 

Similar to Microchirita personata C.Puglisi in the habit, but differing in the inflorescence 2–6-flowered (vs more than 10-flowered), corolla lobes rotate (vs personate), anthers yellow, papillose (vs white, glabrous).

Etymology.— The specific epithet refers to the flowers resembling the flower of Argostemma (Rubiaceae).

Vernacular name.— ດອກປີ່ນຂາວ [Dok Pin Khao].

Microchirita flavofusca Souvann. & Lanors.:
A. habitt; B. flower, front view, and slightly back view; C. inflorescence withflowers and young fruits; D-E. dissected corolla tube showing anthers and staminodes; F. calyx and pistil; G. young fruit.

  All from LP139. Photos by S. Lanorsavanh.

Microchirita flavofusca Souvann. & Lanors. sp. nov.

Similar to Microchirita glandulosa C.Puglisi in having bracts fused at the base, but differeng in the stem glabrous (vs stem sparsely glandular hairy), calyx tube 2.5–4 mm, hairy only outside (vs 1.5 mm, hairy on both sides), corolla 3–3.5 cm long, light yellow with brown-red patch (vs 15–18 mm, white), filaments minutely glandular (vs glabrous). It is also similar to M.magnifloraSouvann., but differing by calyx sparsely eglandular pubescent, remote serrate with glandular margin (vs densely glandular pubescent, with some stellate hairs, and entire margin), corollalightly yellow with brown-red patch inside (vs corolla dark purple, granite grey patch near mouth with yellow inside).

Etymology.—The  specific epithet refers to the yellow flower with brown-red patch.

 Vernacular  name.— ດອກລະຄັງເຫຼືອງ [Dok  La  Khang Leung].

Microchirita magniflora Souvann.:
A. habit; B. flowers; C. flower, side view; D. calyx and pistil; E. dissected corolla tube showing anthers and staminodes; F. anthers.

 All from PMHNN0209. Photos by K. Souvannakhoummane.

Microchirita magniflora Souvann., sp. nov.

Similar to Microchirita involucrata (Craib) Yin Z.Wang in the habit and morphology of flower form, but differing in bracts fuse at the base (vs free), calyx covered by glandular hairs with some stellate hairs outside (vs only glandular hairs), corolla 35–40 mm long, yellow inside throat (vs 18–21 mm long, not yellow inside), filaments minutely glandular (vs glabrous).

Etymology.— The specific epithet refers to large flowers.

Vernacular name.— ດອກລະຄັງຫວງ [Dok  La  Khang Louang].

 

Keooudone Souvannakhoummane and Soulivanh Lanorsavanh. 2024. Studies on the Gesneriaceae in Laos I: Three New Species of Microchirita from Khammouane Karst. Tropical Natural History. 24(1); 2024), 60–69. li01.tci-thaijo.org/index.php/TNH/article/view/259309

 facebook.com/BioFNS/posts/949899640268153

 

[Botany • 2021] Sonerila erectifolia & S. souvannii (Melastomataceae) • Two New Species from Laos

Sonerila erectifolia Phonep., Soulad. & Tagane, 

Sonerila souvannii Phonep. & Soulad., 

 

in Phonepaseuth, Souladeth, Souvannakhoummane, Vongthavone et Tagane, 2021. 

DOI: 10.5852/ejt.2021.755.1403 

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ABSTRACT

Two new species of Sonerila Roxb. (Melastomataceae), S. erectifolia Phonep., Soulad. & Tagane sp. nov. from southern Laos, and S. souvannii Phonep. & Soulad. sp. nov. from central Laos, are described and illustrated. Comparisons with morphologically similar species are presented, along with ecological information and preliminary conservation status. A key to the species of Sonerila in Laos is also provided.

 

Keywords: Bolaven Plateau, flora, Indochina, taxonomy, Vientiane Capital

Class Magnoliopsida Brongn.

Order Myrtales Juss. ex Bercht. & J.Presl.

Family Melastomataceae Juss.

Genus Sonerila Roxb.

Sonerila erectifolia Phonep., Soulad. & Tagane sp. nov.
A. Habitat (on open moss-covered bedrock). B. Close-up of plant (left: pink flowers, common; right: white flowers, rare). C. Habit. D. Inflorescence (left: pink flowers; right: white flowers). E. Young fruits. F. Top view of young fruit. G. Cross sections of young fruit. H. Rhizome. I. Upper surface of lamina. J. Lower surface of lamina.

 Photos by P. Phonepaseuth on 17 September 2020.

Sonerila erectifolia Phonep., Soulad. & Tagane sp. nov.

Diagnosis: Sonerila erectifolia sp. nov. is similar to Sonerila violifolia in its scorpioid or subumbelliform inflorescence, but it differs in the length of stem (ca 1 cm long in S. erectifolia sp. nov. vs 10–18 cm long in S. violifolia), the venation of the leaves (2 veins running from the base of lamina vs pinnately veined with 2–3 lateral primary veins), hairiness of leaves (sparsely covered with whitish hairs on veins abaxially vs glabrous), the length of the petiole (6–10 cm long vs 1–7 cm long), and number of flowers per inflorescence (5–12(–18) flowers vs 1–9 flowers). For further comparison see Table 1.

Etymology: The specific epithet refers to the plant having erect leaves.

Vernacular name: ຊີດິນໃບຕັ້ງ [ʻSeedin Baitungʼ 

(meaning: ʻSonerila with erect leavesʼ)]

Sonerila souvannii Phonep. & Soulad. sp. nov. 
A. Habit. B. Front view of flower. C. Petals. D. Hypanthium and style, with portion of pedicel. E. Cross section of ovary. F. Stamens. G. Style and stigma. H. Capsule. I. Rachis and minute bracts.

Line drawings from holotype (Phonepaseuth P012) by K. Souvannakhoummane.

Sonerila souvannii Phonep. & Soulad. sp. nov.
A. Habitat (on sandstone rock). B. Habit. C. Petiole densely covered withvillous hairs. D. Rhizome and stem with rudimentary leaves. E. Flowers. F. Inflorescence (scorpioid cyme). G. Lateral view of flower. H. Back view of flower. I. Longitudinal section of fruit. J. Top view of fruit. K. Cross section of fruit. L. Infructescence of the last season.

Photos by P. Phonepaseuth on 12 September 2020.

Sonerila souvannii Phonep. & Soulad. sp. nov.

Diagnosis: Sonerila souvannii sp. nov. is similar to S. cardamomensis, described from Cambodia, in its acaulescent habit and in the shape of its leaves, but it differs in the shape of its rhizome (cylindrical in S. souvanii vs bulbous in S. cardamomensis), larger leaves (8–10 × 6–9 cm vs 1–4 × 0.9–2.7 cm), petiole length and color (8–15 cm long and light green vs 0.4–2.5 cm long and reddish brown), greater number of flowers per cyme (20–25 vs 5–11), and petal length and pubescence (9–10 × 6–7 mm and glabrous vs 5.5–6 × 3.5–4 mm with glandular trichomes on midveins abaxially). Sonerila souvannii sp. nov.is also similar to S. dongnathamensis from Thailand in the shape of its inflorescences, but differs in the rhizome shape (cylindrical vs globose), the shape of the leaf base (cordate vs obtuse to rounded), pedicel length (10–25 mm long vs 1–4 mm long), the number of flowers per cyme (20–25 vs 5–12), and in the length and outline of the petals (9–10 × 6–7 mm, acute vs 3–5 × 3–4 mm, acuminate with long seta).The new species is also related to S. tuberosa from Cambodia, but distinguished in the rhizome shape (cylindrical vs slightly bulbous), the shape of the leaf base (cordate vs very broadly ovate to orbicular), pedicel length (10–25 mm long vs 5–6 mm long), the number of flowers per cyme (20–25 vs 4–8), and in the length and outline of the petals (9–10 × 6–7 mm, acute vs 5 × 2.7 mm, elliptic, apiculate, pink) (Table 2)

Etymology: The specific epithet honours Keooudone Souvannakhoummane (Centre for Development and Environment), a plant taxonomist who has greatly contributed to our understanding of plant diversity in Laos through the description of many new species in various families for the flora of Laos.

Vernacular name: ຊີດິນສຸວັນ [ʻSouvan’s Seedinʼ 

(meaning: ʻSouvan’s Sonerilaʼ)].

 

Phongphayboun Phonepaseuth, Phetlasy Souladeth, Keooudone Souvannakhoummane, Thyraphon Vongthavone and Shuichiro Tagane. 2021. Two New Species of Sonerila Roxb. (Melastomataceae) from Laos. European Journal of Taxonomy. 755(1), 136-148. DOI: 10.5852/ejt.2021.755.1403

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Researchgate.net/publication/352657670_Two_new_species_of_Sonerila_from_Laos

[Entomology • 2023] Kalimantanossus kongkeoi • A New Species of Kalimantanossus Yakovlev, 2011 (Lepidoptera: Cossidae: Cossinae) from Laos

[1] Kalimantanossus kongkeoi Yakovlev, Prozorov, Prozorova & Müller, 2023; 
[2-4] K. microgenitalis (Yakovlev, 2004)

DOI: 10.37828/em.2023.69.15  

Researchgate.net/publication/375801094

Abstract

The article describes Kalimantanossus kongkeo, sp. n. (Lepidoptera, Cossidae: Cossinae) distributed in the Central Laos (Xiangkhouang Province). The article has nine illustrations. The world catalog of the genus Kalimantanossus Yakovlev, 2011 is presented.

Figures 1−5. Kalimantanossus, adult males:
 1. Kalimantanossus kongkeoi, holotype (coll. G. Müller, Freising); 
2. K. microgenitalis, holotype (MWM); 3. K. microgenitalis, Borneo, Trus-Madi (MWM); 4. K. microgenitalis, Borneo, Trus-Madi (MWM); 5. K. microgenitalis in nature, Trus Madi Entomology Camp, Nuluhon Trusmadi Forest Reserve, Keningau District, Sabah, Borneo. Lower montane dipterocarp forest, 1050 m, 5.442964 N / 116.451075 E (photo by Alexey Yakovlev).

1. Kalimantanossus kongkeoi, holotype (coll. G. Müller, Freising); 2. K. microgenitalis, holotype (MWM); 3. K. microgenitalis, Borneo, Trus-Madi (MWM); 4. K. microgenitalis, Borneo, Trus-Madi (MWM); 5. K. microgenitalis in nature, Trus Madi Entomology Camp, Nuluhon Trusmadi Forest Reserve, Keningau District, Sabah, Borneo. Lower montane dipterocarp forest, 1050 m, 5.442964 N / 116.451075 E (photo by Alexey Yakovlev).

Kalimantanossus kongkeo, sp. n. 

Roman V. Yakovlev, Alexey M. Prozorov, Tatiana A. Prozorova, Günter C. Müller. 2023. New Species of Kalimantanossus Yakovlev, 2011 (Lepidoptera, Cossidae: Cossinae) from Laos with the genus catalogue. Ecologica Montenegrina. 69; 154-159. DOI: 10.37828/em.2023.69.15

  Researchgate.net/publication/375801094_New_species_of_Kalimantanossus_from_Laos

[Funga • 2024] Cystolepiota flavolamellata (Agaricales: Verrucosporaceae) • A New Species from Southeast Asia

 Cystolepiota flavolamellata Salichanh, Sysouph., & Luangharn, 

in Salichanh, Sysouphanthong, Thongklang et Luangharn. 2024.  

DOI: 10.11646/phytotaxa.645.1.2 

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Abstract

We present Cystolepiota flavolamellata a new species discovered in the tropical regions of Thailand and Laos. Morphological characters and multigene phylogenetic analyses, which encompass ITS, LSU, rpb2, and tef1 sequences, distinguish this species. Cystolepiota flavolamellata exhibits the following unique set of characteristics: basidiomata covered with light brown to brown granules or large pyramidal squamules; free yellowish white to light yellow lamellae; broadly ellipsoid to oblong-amygdaliform to ovoid basidiospores; absence of pleurocystidia; variably shaped cheilocystidia, i.e., oblong, clavate with or without appendicular apex, conical to utriform, fusiform; an epithelium for the pileus and stipe covering; and presence of clamp connections. Molecular analyses based on multiple genes confirm its separation from other known and sequenced Cystolepiota species.

 fungi, fungal diversity, litter-inhabiting fungi, taxonomy 

 Cystolepiota flavolamellata Salichanh, Sysouph., & Luangharn

Thaviphone Salichanh, Phongeun Sysouphanthong, Naritsada Thongklang and Thatsanee Luangharn. 2024. Cystolepiota flavolamellata (Verrucosporaceae, Agaricales), A New Species from Southeast Asia.  Phytotaxa 645(1); 18-28. DOI: 10.11646/phytotaxa.645.1.2

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