Papers by Gayane Karagyan
BioInvasions Records, 2024
<i>Sphenoptera</i> (<i>Deudora</i>) <i>svatopluki</i> sp. nov... more <i>Sphenoptera</i> (<i>Deudora</i>) <i>svatopluki</i> sp. nov. (Figs 2, 5) <b>Type locality.</b> Iraq, Diyala Province, Kanakin. <b>Type material.</b> HOLOTYPE: ♁, '[Iraq] Kanakin Irak / 9.IV.39 Frey [p] // Typus [p, on red paper] // Deudora / kanakina m. Type [h] / Det. Dr Obenberger [p]' (NMPC). PARATYPE, 1 ♁, the same locality data, but without type and identification labels (NMPC). <b>Description.</b> Body rather elongate, 2.7 times as long as wide, dark bronzy, rather shiny, body above nearly glabrous with very few inconspicuous setae, ventrally with short white setae slightly more dense laterally. Length 3.28–4.25 mm, width 1.18–1.58 mm. Head rather broad, very slightly narrower than pronotum anteriorly; eyes large, moderately convex, slightly projecting beyond contour of head; vertex 2.07–2.09 times as wide as transverse diameter of eye. Clypeus in shape of rather narrow semicircle. Frons with almost straight sides, very weakly diverging posteriorly, flattened or very slightly convex, with pair of small weak reliefs approximately at the level of mid-length of eyes. Supraantennal carinae anteriorly strong, posteriorly gradually disappearing rather far from inner margins of eyes. Surface with sparse superficial micropunctures and with rather big macropunctures dense anteriorly, towards vertex becoming weaker and more sparse, reliefs with only micropunctures. Punctate portions of surface with short dense setae, reliefs with single setae. Antennae 1.50–1.80 times as long as vertical diameter of eye, serrated from antennomere IV which is slightly longer than wide, antennomere V nearly equilateral, more distal antennomeres moderately transverse. Pronotum 1.35–1.40× as wide as long, widest approximately in middle, with sides nearly regularly arcuate, only very slightly emarginate before acute-angled posterior angles. Lateral carinae extending to approximately anterior 1/4 of pronotum, visible from above in approximately posterior 1/3. Anterior margin very feebly bisinuate, bordered with indistinct sulcus narrowly [...]
Zootaxa
This paper presents a checklist of aphids of Armenia. Nowadays, 203 species of aphids belonging t... more This paper presents a checklist of aphids of Armenia. Nowadays, 203 species of aphids belonging to 83 genera, 10 subfamilies, two families and two superfamilies are known, of which nine species are recognized in Armenia for the first time: Aphis cephalariae Barjadze, A. chloris Koch, A. solanella Theobald, A. urticata Gmelin, A. wellensteini (Börner), Brachyunguis harmalae Das, Macrosiphoniella millefolii (De Geer), Microlophium carnosum (Buckton), and Metopeurum buryatica (Pashtshenko). Twelve alien aphid species are cited in the paper.
Figs 1–2. 1 – Sphenoptera (Deudora) peninsulae sp. nov. (holotype); 2 – S. (D.) svatopluki sp. no... more Figs 1–2. 1 – Sphenoptera (Deudora) peninsulae sp. nov. (holotype); 2 – S. (D.) svatopluki sp. nov. (holotype).
Kalashian, Mark Yu., Karagyan, Gayane H. (2016): Two new species of Sphenoptera from South-West A... more Kalashian, Mark Yu., Karagyan, Gayane H. (2016): Two new species of Sphenoptera from South-West Asia (Coleoptera: Buprestidae: Chrysochroinae). Acta Entomologica Musei Nationalis Pragae 56 (1): 17-22
Entomological News, 2019
ABSTRACT: We report the first record of the Brown Marmorated Stink Bug, Halyomorpha halys (Stål, ... more ABSTRACT: We report the first record of the Brown Marmorated Stink Bug, Halyomorpha halys (Stål, 1855) (Hemiptera:Heteroptera, Pentatomidae), in Turkey. This agricultural pest was detected in October 2017 in Kemalpaşa District of Artvin Province located in the Eastern Black Sea Region near the Georgian border. We discuss potential further spread of the pest and its host plants in Turkey.
Comparative cytogenetics, 2016
Although previous cytogenetic analysis of Pamphagidae grasshoppers pointed to considerable karyot... more Although previous cytogenetic analysis of Pamphagidae grasshoppers pointed to considerable karyotype uniformity among most of the species in the family, our study of species from Armenia has discovered other, previously unknown karyotypes, differing from the standard for Pamphagidae mainly in having unusual sets of sex chromosomes. Asiotmethis turritus (Fischer von Waldheim, 1833), Paranocaracris rubripes (Fischer von Waldheim, 1846), and Nocaracris cyanipes (Fischer von Waldheim, 1846) were found to have the karyotype 2n♂=16+neo-XY and 2n♀=16+neo-XX, the neo-X chromosome being the result of centromeric fusion of an ancient acrocentric X chromosome and a large acrocentric autosome. The karyotype of Paranothrotes opacus (Brunner von Wattenwyl, 1882) was found to be 2n♂=14+X1X2Y and 2n♀=14+X1X1X2X2., the result of an additional chromosome rearrangement involving translocation of the neo-Y and another large autosome. Furthermore, evolution of the sex chromosomes in these species has in...
Medical and veterinary entomology, Jan 17, 2015
Anopheles atroparvus (Diptera: Culicidae) is one of the main malaria vectors of the Maculipennis ... more Anopheles atroparvus (Diptera: Culicidae) is one of the main malaria vectors of the Maculipennis group in Europe. Cytogenetic analysis based on salivary gland chromosomes has been used in taxonomic and population genetic studies of mosquitoes from this group. However, a high-resolution cytogenetic map that could be used in physical genome mapping in An. atroparvus is still lacking. In the present study, a high-quality photomap of the polytene chromosomes from ovarian nurse cells of An. atroparvus was developed. Using fluorescent in situ hybridization, 10 genes from the five largest genomic supercontigs on the polytene chromosome were localized and 28% of the genome was anchored to the cytogenetic map. The study established chromosome arm homology between An. atroparvus and the major African malaria vector Anopheles gambiae, suggesting a whole-arm translocation between autosomes of these two species. The standard photomap constructed for ovarian nurse cell chromosomes of An. atroparv...
Folia biologica, 2001
The male karyotypes of six species of the buprestid genera Sphenoptera (two species) and Acmaeode... more The male karyotypes of six species of the buprestid genera Sphenoptera (two species) and Acmaeoderella (four species) were studied after Ag-banding. The following karyotypes were found in individual species: n = 19-23, with predominance of 23, in Sphenoptera scovitzi Fald., 2n = 24 (22 + Xyp) in Sphenoptera mesopotamica Mars., 2n = 18 (16 + Xyr) in Acmaeoderella flavofasciata Pill. & Mitt., Acmaeoderella gibbulosa Men., Acmaeoderella boryi Brulle, Acmaeoderella vetusta Men. In Sph. scovitzi, two chromosome pairs were found to display stable argentophilous blocks. In Sph. mesopotamica, NOR-bearing is one of the large autosomal bivalents. In all species of the genus Acmaeoderella, a nucleolus-like argentophilous body is placed between the X and y chromosomes.
Euroasian Entomological Journal
The rare antlion Dendroleon pantherinus (Fabricius, 1787) is recorded from Armenia for the first ... more The rare antlion Dendroleon pantherinus (Fabricius, 1787) is recorded from Armenia for the first time; it was found in forest regions of NorthEastern Armenia. Considering the rarity of this species, both throughout its range and in Armenia, it is proposed to include it in the next edition of the Red Book of the country. Резюме. Для фауны Армении впервые приводится редкий вид муравьиного льва Dendroleon pantherinus (Fabricius, 1787). Вид найден в лесных районах Северо-восточной Армении. Учитывая его редкость как по всему ареалу, так и в Армении, предлагается включение вида в следующее издание Красной книги страны.
The male karyotypes of Acmaeodera pilosellae persica Mannerheim, 1837 with 2n=20 (18+neoXY), Sphe... more The male karyotypes of Acmaeodera pilosellae persica Mannerheim, 1837 with 2n=20 (18+neoXY), Sphenoptera scovitzii Faldermann, 1835 (2n=38–46), Dicerca aenea validiuscula Semenov, 1895 – 2n=20 (18+Xyp) and Sphaerobothris aghababiani Volkovitsh et Kalashian, 1998 – 2n=16 (14+Xyp) were studied using conventional staining and different chromosome banding techniques: C-banding, AgNOR-banding, as well as fluorochrome Chromomycin A3 (CMA3) and DAPI. It is shown that C-positive segments are weakly visible in all four species which indicates a small amount of constitutive heterochromatin (CH). There were no signals after DAPI staining and some positive signals were discovered using CMA3 staining demonstrating absence of AT-rich DNA and presence of GC-rich clusters of CH. Nucleolus organizing regions (NORs) were revealed using Ag-NOR technique; argentophilic material mostly coincides with positive signals obtained using CMA3 staining
Karyotype analysis of four jewel-beetle species (Coleoptera, Buprestidae).... 183 Karyotype analy... more Karyotype analysis of four jewel-beetle species (Coleoptera, Buprestidae).... 183 Karyotype analysis of four jewel-beetle species (Coleoptera, Buprestidae) detected by standard staining,
The representatives of the lacewing families Myrmeleontidae, Ascalaphidae, and Nemopteridae (the ... more The representatives of the lacewing families Myrmeleontidae, Ascalaphidae, and Nemopteridae (the suborder Myrmeleontiformia) were studied with reference to the number of testicular follicles in males and the number of ovarioles in females. We have found that the number of follicles is highly variable, at least in the first two families. In the comparatively more fully explored family Myrmeleontidae, the species studied have three to several hundred follicles per testis, the dominant values being six and five. In Ascalaphidae, two main patterns were revealed: testes with a low number of follicles (six and twelve per testis) and testes with multiple follicles (several dozens). Moreover, differences in the follicle number were often observed both between males of the same species and different testes of a male. In Nemopteridae, considered a sister group to the [Myrmeleontidae + Ascalaphidae] clade, the testes in males were found to consist of six or five follicles each. This implies that a low number of follicles, most likely six, is an ancestral trait in Myrmeleontiformia. All other numbers are thus the derived traits and are probably due to a simple oligomerization or a simple polymerization, the latter process having been very intensive in the evolution of the suborder. Conversely, females were found to have ten ovarioles per ovary in each of the three families studied.
Molecular Phylogenetics and Evolution, 2022
The origin and diversification process of lineages of organisms that are currently widely distrib... more The origin and diversification process of lineages of organisms that are currently widely distributed among continents is an interesting subject for exploring the evolutionary history of global species diversity. Ground beetles of the subfamily Carabinae are flightless except for one lineage, but nevertheless occur on all continents except Antarctica. Here, we used sequence data from ultraconserved elements to reconstruct the phylogeny, divergence time, biogeographical history, ancestral state of hind wings and changes in the speciation rate of Carabinae. Our results show that Carabinae originated in the Americas and diversified into four tribes during the period from the late Jurassic to the late Cretaceous, with two in South America (Celoglossini) and Australasia (Pamborini) and two in Laurasia (Cychrini and Carabini). The ancestral Carabinae were inferred to be winged; three of four tribes (Cychrini, Ceglossini and Pamborini) have completely lost their hind wings and flight capability. The remaining tribe, Carabini, diverged into the subtribes Carabina (wingless) and Calosomina (winged) in the Oligocene. Carabina originated in Europe, spread over Eurasia and diversified into approximately 1000 species, accounting for around 60% of all Carabinae species. Calosomina that were flight-capable dispersed from North America or Eurasia to South America, Australia, and Africa, and then flightless lineages evolved on oceanic islands and continental highlands. The speciation rate increased in the Cychrini and Carabini clades in Eurasia. Within Carabini, the speciation rate was higher for wingless than winged states. Our study showed that the global distribution of Carabinae resulted from ancient dispersal before the breakup of Gondwana and more recent dispersal through flight around the world. These patterns consequently illustrate the causal relationships of geographical history, evolution of flightlessness, and the global distribution and species diversity of Carabinae.
European Journal of Entomology, 2021
Within the former Soviet Union, this species was fi rst recorded in Byelorussian SSR in 1947 (Mar... more Within the former Soviet Union, this species was fi rst recorded in Byelorussian SSR in 1947 (Markovets, 1950) and in Armenian SSR-in 1976 (Nalbandyan, 1984). CPB is highly fecund, highly intraspecifi cally polymorphic, ecologically plastic and adaptable, and quick to develop resistance to insecticides, which enables it to successfully adapt to different environmental factors (Ushatinskaya, 1981; Udalov & Benkovskaya, 2011). CPB is well studied with respect to morphology, phenotypic structure, life-cycle, ecology, distribution and behaviour (for references, see Fasulati, 1993; Boiteau, 1994;
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Papers by Gayane Karagyan