Papers by Borislav Gueorguiev
Historia naturalis bulgarica
The rediscovery of the rare and endangered species Carabus (Hygrocarabus) variolosus is reported ... more The rediscovery of the rare and endangered species Carabus (Hygrocarabus) variolosus is reported after its last record from 1909. The only known locality (Stara Planina Mts, Varshets Town) was confirmed. New records at similar habitats in the region could be expected in the future, based on extensive surveys with the proposed methods.
Deutsche Entomologische Zeitschrift
Species of the subgenus Eremoderus Jeanne, 1996, genus Platyderus Stephens, 1827, occurring in co... more Species of the subgenus Eremoderus Jeanne, 1996, genus Platyderus Stephens, 1827, occurring in continental Africa (excluding Macaronesia) and southwest Asia, are taxonomically revised. The following new species groups and species are defined and described, “weiratheri” group: Platyderus (Eremoderus) chatzakiae, sp. nov. (type locality: Greece, Kalymnos Island, near Stimenia Village); “iranicus-vanensis” group: Platyderus (Eremoderus) felixi, sp. nov. (type locality: Iran, Chahar Mahal va Bakhtiari Province, 10 km west of Naghan Town); Platyderus (Eremoderus) iranicus, sp. nov. (type locality: Iran, Chahar Mahal va Bakhtiari Province, 7 km NE Naghan Town); Platyderus (Eremoderus) vanensis, sp. nov. (type locality: Turkey, Van Province, Gevaş Town); Platyderus (Eremoderus) vrabeci, sp. nov. (type locality: Turkey, Nemrut Daği); “lassallei” group: Platyderus (Eremoderus) lassallei, sp. nov. (type locality: Iran, Mazandaran Province, between Nur City and Lavij Village); “davatchii” grou...
Biodiversity Data Journal, 2016
So far, special attention to the endogean and MSS (Mesovoid Shallow Substratum) fauna was not pai... more So far, special attention to the endogean and MSS (Mesovoid Shallow Substratum) fauna was not paid in Bulgaria, though typical subterranean species of the Coleoptera have been described. The aim of present study is to put on record the results of a broad-scale study of the coleopteran fauna from the MSS and lower (euedaphic) soil horizons in the country. We carried out investigations in the period April 2006–July 2014, manly in the Vitosha Mt., Pirin Mt., Stara Planina Mts., Slavyanka Mt., Belasitsa Mt., Erma and Kresna Gorge, Western Rhodopes Mts., and Srednagora Mts. For the time being, material from the following families was identified to the genus and species levels: Anobiidae, Aphodiidae, Carabidae, Clambidae, Corylophidae, Curculionidae, Endomychidae, Histeridae, Leiodidae, Monotomidae, Scyrtidae, Silvanidae, Silphidae, Staphylinidae (Pselaphinae) and Zopheridae. We report for the first time the sub-genus Antisphodrus Schaufuss, 1865 (Carabidae) and Zustalestus Reitter, 1912 ...
Orthomus hespericus Motschulsky, 1849, formerly placed by different authors as questionable synon... more Orthomus hespericus Motschulsky, 1849, formerly placed by different authors as questionable synonym of either O. velocissimus akbensis Mateu, 1955 or O. velocissimus andalusiacus Mateu, 1957, is treated here as junior subjective synonym of O . barbarus barbarus (Dejean, 1828). A lectotype of O. hespericus Motschulsky is designated. O. rectangulus (Fairmaire, 1859) represents a possible junior subjective synonym of O . berytensis (Reiche & Saulcy, 1855). The treatment of Carabus rectangulus Cuvier, 1833, as a junior secondary homonym of Feronia rectangula Fairmaire, 1849 is rejected. A corrected version of the checklist of the species of Orthomus is included.
Animal Biodiversty and Conservation, 2003
Two new species of Laemostenus (Pristonychus) Bonelli from Bulgaria and notes on L. (P.) euxinicu... more Two new species of Laemostenus (Pristonychus) Bonelli from Bulgaria and notes on L. (P.) euxinicus Nitzu (Coleoptera, Carabidae).-Two new species of subgenus Pristonychus Dejean, 1828, of the genus Laemostenus Bonelli, 1810, are described and illustrated: L. stoevi n. sp. from northern Bulgaria and L. derventicus n. sp. from southeastern Bulgaria. Both new species are distinguished from the closely related L. euxinicus Nitzu, 1998, L. tichyi (Kult, 1946) and L. punctatus (Dejean, 1828). This work contributes to both the faunistics and taxonomy of L. euxinicus from Romania. The assumed adaptive trend and origin of the most modified characters of the two new species are discussed, and the systematic place, taxonomic status and formation of more divergent species of the "terricola" group are presented.
European Journal of Entomology
http://www.eje.cz Miquel & Vasko, 2014). This species burrows into the soil to reach hypogeous fu... more http://www.eje.cz Miquel & Vasko, 2014). This species burrows into the soil to reach hypogeous fungi (Ballerio et al., 2010). Adults are crepuscular and nocturnal and are attracted to light (Fabra, 2004; Ballerio et al., 2010). Juřena et al. (2008) report that adults fl y low above the ground (cca. 1/2 m), with the duration of each fl ight lasting 15-30 min and beginning about 40-45 min after sunset. Beetles fl y before/after sunset and at night, mostly above meadows and along forest edges (Brelih et al., 2010). The adults are active mostly from late May to early July, but sometimes are observed in August and September (Juřena et al., 2008; Hillert et al., 2016). Although this species is recorded in most of the countries in Southeast Europe, current knowledge about its regional distribution is relatively poor and differs signifi cantly in extent from country to country (Koren, 2017). In the former Yugoslavia, there are only old records for Slovenia (fi ve sites) (
The presence of the family Eucinetidae Lacordaire, 1857, the genera Eucinetus Germar, 1818 and Ny... more The presence of the family Eucinetidae Lacordaire, 1857, the genera Eucinetus Germar, 1818 and Nycteus Latreille, 1829, and the species Eucinetus haemorrhoidalis (Germar, 1818) and Nycteus hopffgarteni (Reitter, 1885) is recorded for the first time in the Bulgarian fauna.
Zootaxa, 2012
The species belonging to the subgenus Molopsis Schatzmayr, 1943 of genus Tapinopterus Schaum, 185... more The species belonging to the subgenus Molopsis Schatzmayr, 1943 of genus Tapinopterus Schaum, 1858 are revised. Thestudy is based on 372 specimens and includes, for each taxon, diagnosis, description (only for the new species), references,new distributional records and illustrations. Morphological characters of the male and female genitalia are widely used todelimit the separate species, the significance of some non-gonapophyseal genital structures of the females for the system-atics of Molopsis is explicitly emphasized. For the first time, the male genitalia of T. molopiformis, T. molopinus, T. wie-demanni, and T. rebellis, including also newly described species, as well as female genitalia of Molopsis are described andillustrated. All available type material is listed and represented by habitus photographs.As a result, 9 monotypic species of Molopsis are recognized. Tapinopterus rebellis (Chaudoir, 1868) and T. rebelliskumanensis (Reitter, 1884), formerly assigned to Molopsis are ...
ZooKeys, 2021
The Oodini precinctive to New Caledonia are reviewed with nine species recognized, of which seven... more The Oodini precinctive to New Caledonia are reviewed with nine species recognized, of which seven are newly described in two genera. Five species are described in the genus Coptocarpus Chaudoir: C. micropssp. nov., C. erwinisp. nov., C. amieuensissp. nov., C. magnussp. nov., and C. leschenisp. nov. In the genus Adelopomorpha Heller two species, A. tethyssp. nov. and A. tuberculatasp. nov., are described. In order to place cladistically the newly described species in a genus, a phylogenetic analysis of a matrix of 36 characters of adult morphology was conducted including exemplar species of three putative outgroup genera, six putative ingroup thryptocerine oodine genera, and all oodine species from New Caledonia. Results show support for Thryptocerina and monophyly of Adelopomorpha. Hoplolenus LaFerté-Sénectère is not monophyletic and Hoplolenus cyllodinus Fauvel is newly combined as Coptocarpus cyllodinuscomb. nov. New Caledonian species of Coptocarpus form a clade, but the Australi...
Entomologica Fennica, 2011
We compile the available georeferenced information on Bulgarian Scarabaeus species, including bot... more We compile the available georeferenced information on Bulgarian Scarabaeus species, including both bibliographic and natural history data to provide basic ecological and biogeographical information as well as maps of climatically favourable areas (potential distributions) for each one of the species. Scarabaeus species in Bulgaria seem to be generally distributed across low altitude areas mainly under warm temperate or Mediterranean conditions, although S. variolosus appears to be the species adapted to the warmest conditions and S. armeniacus inhabits areas of medium altitude. Our results indicate that it is necessary to carry out an extra survey effort in the northern lowlands, away the Stara Planina Mts. in order to validate current climatically suitable territories for some species. However, the recent land use transformations of these lowland areas, together with the general decline of roller dung beetle populations, suggest that this validation may not be possible.
Zootaxa, 2009
Three new species, Platyderus casalei new species (type locality: Santa Eufemia, Calabria Region)... more Three new species, Platyderus casalei new species (type locality: Santa Eufemia, Calabria Region), Platyderus paganettii new species (type locality: Santa Eufemia, Calabria Region) and Platyderus vignai new species (type locality: Gargano Mountain, Apulia Region) are described. The diagnostic characters of the new taxa are defined and figures of the male genitalia are depicted. The synonymy of Platyderus neapolitanus (Reiche, 1855) and Platyderus canaliculatus jannonei Binaghi, 1955 is confirmed. Platyderus dalmatinus is treated as doubtful for the fauna of Italy. A key of the five Italian species of Platyderus from the South Apennines is included.
An important step in research planning is the choice of methodology. This is especially important... more An important step in research planning is the choice of methodology. This is especially important for territories which are difficult to access such as in the Arctic, where successive repetitions of field works require significant resources. The methodology utilizing the local fauna has been used over the past twenty years. It provides comparable data on the structure of fauna and species richness for different territories. The purpose of the present study was to assess the "local fauna method" with respect to fauna studies of ground beetles in the Arctic forest-tundra zone. The research was conducted from June 18 2017 to August 30 2017 within the Polar Urals (10 km from the Harp settlement in the Yamalo-Nenets Autonomous Okrug, which is a state of Russia). Carabids were sampled by using pitfall traps on 20 sites. This article will also include the results of our previous research concerning the structure of some local faunas from the forest-tundra zone of Nenets Autonomous Okrug (settlements Nes', Oma, Khorey-Ver). The results of this study demonstrate the following: 1) the local fauna of the Polar Urals has 85 species of ground beetles from 25 genera, which is 77% of species lists of carabids for a 70-year period of research within the Polar Urals; 2) the local fauna of the Polar Urals has 29% similarity of list species with local faunas from the European part of the Arctic, with similar compositions of zoogeographical groups and life forms; 3) in one research period there was 90% detection of carabids species in the forest-tundra local fauna using the sampling method of pitfall traps within a period of 40 days, conducted at 15 sites, with the predominance of southern types of plant communities (meadows, forests).
Four unknown populations of the genus Troglorrhynchus from the Bulgarian Eastern Rhodopes are rec... more Four unknown populations of the genus Troglorrhynchus from the Bulgarian Eastern Rhodopes are recorded. Two of them are referred to Troglorrhynchus angelovi sp. n., type locality: Zandana Cave, Dolno Cherkovishte Village. The new species is described, illustrated, and distinguished from T. beroni. The other two samples concern the finding of the latter species in the region. For the first time a female representative of T. beroni is described too.
Ceuthophyes enormis nov. sp. collected from two caves in the karstic plateau of Golobrdo, Peshkop... more Ceuthophyes enormis nov. sp. collected from two caves in the karstic plateau of Golobrdo, Peshkopi District, Eastern Albania) is described. Male and female genitalia as well as other diagnostic characters of the new species are illustrated and a key for the identification of the species belonging to the genus Ceuthophyes Jeannel, 1924 is given. The additional description of Henrotiella eubeensis Perreau, 1999, based on topotypical collection ("Agía Triada" Cave, Euboea Island, Greece), is also given.
Deutsche Entomologische Zeitschrift, 2015
A new genus of Pterostichini, Apophylon Guéorguiev & Sciaky, gen. n. (type species: Apophylon sch... more A new genus of Pterostichini, Apophylon Guéorguiev & Sciaky, gen. n. (type species: Apophylon schillhammeri Guéorguiev & Sciaky, sp. n.) is proposed for Apophylon schillhammeri Guéorguiev & Sciaky, sp. n. (type locality: China, SE Guizhou Province, Leishan County, SE Kaili) and Apophylon pangu Guéorguiev & Sciaky, sp. n. (type locality: China, NW Hunan Province, Wulingyuan District, near the town of Wulingyuan). These two species share a unique combination of characters, not known in any other Pterostichini. The new genus can be distinguished by having (1) a left paramere without transverse apophysis; (2) a falcate right paramere, with styloid apex, broadened medial part and subbasal hasp; (3) a median lobe with dorsal ostium; (4) metatarsomeres 1-2 setose on the medioventral surface, in addition to the lateroventral setae; (5) meso-and metatarsomeres 1-4 with two dorsolateral grooves diverging distally; and (6) elytral striae with shining isodiametric microreticulation, which is in contrast to less shining transversemesh microreticulation on the elytral intervals.
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Papers by Borislav Gueorguiev