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First cavernicolous trechine beetle discovered in Guilin karst, northeastern Guangxi (Coleoptera, Carabidae, Trechinae).

ABSTRACT: A new subgenus and new species of anophthalmic trechine beetles, Oodinotrechus (Pingleotrechus) yinae subgen. n., sp. n., is described and illustrated from a limestone cave called Chaotianyan in southern part of Guilin karst, northeastern Guangxi Zhuang Autonomous Region. The new taxon is very different from the Maolan-Mulun congeners belonging to the nominate subgenus Oodinotrechus (s. str.) Uéno, 1998, in several important character states including pronotal structure, elytral chaetotaxy and male genitalia. It is the first record of a cavernicolous trechine beetle in Guilin karst, and in the eastern part of Guangxi. In addition, a distribution map for the genus Oodinotrechus Uéno, 1998, is provided.

SUBMITTER: Sun F

PROVIDER: S-EPMC4714371 | biostudies-literature | 2015

REPOSITORIES: biostudies-literature

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Du'an Karst of Guangxi: a kingdom of the cavernicolous genus Dongodytes Deuve (Coleoptera, Carabidae, Trechinae).

Project description:Recent cave biodiversity surveys carried out in Du'an County and its adjacent areas of northwestern Guangxi, China, have revealed some exciting scientific findings. In a very limited area seven new species of the cavernicolous trechine genus Dongodytes Deuve, 1993 were found and are described: Dongodytes(s. str.)elongatussp. n., Dongodytes(s. str.)troglodytessp. n., Dongodytes(s. str.)lanisp. n., Dongodytes (Dongodytodes) brevipenissp. n., Dongodytes (Dongodytodes) jinzhuensissp. n., Dongodytes (Dongodytodes) inexpectatussp. n. and Dongodytes (Dongodytodes) yaophilussp. n. Diagnoses and notes on the genus, subgenera, and two known species in Du'an Karst, Dongodytes(s. str.)baxian Tian, 2011 and Dongodytes (Dongodytodes) deharvengi Tian, 2011, are also given. A key to subgenera and all species of Dongodytes is provided. To date, Dongodytes becomes one of the richest in species genera of subterranean carabid trechines in China with 12 species which are arranged into two subgenera. Dongodytes (s. str.) Deuve is composed of seven species, four of which from Du'an County, each of other three from Bama, Fengshan and Tian'e Counties, respectively. All species of the subgenus Dongodytodes Tian, 2011 are recorded from Du'an Karst. By having 10 species (nine Dongodytes and one Libotrechus Uéno, 1998), Du'an Karst holds the richest specific diversity of cavernicolous Trechinae in China. Dongodytes species are distributed in a very limited area of the river Hongshui He drainages in northwestern Guangxi, and the river acts as a natural barrier of Dongodytes dispersal at only a specific level. However, all members of Dongodytodes are recorded from the eastern or northern bank of Hongshui He.

| S-EPMC4258740 | biostudies-literature

Discovery of a most remarkable cave-specialized trechine beetle from southern China (Coleoptera, Carabidae, Trechinae).

Project description:Xuedytes bellus Tian & Huang, gen. et sp. n. is described from a limestone cave in Du'an Karst of Guangxi, a kingdom of cavernicolous trechine beetles in southern China. From a morphological point of view, Xuedytes Tian & Huang, gen. n. seems to be the most extremely cave-adapted trechines in the world. Superficially, it looks much like Giraffaphaenops Deuve, 2002 in general body shape, in particular the structure of the prothorax, but simultaneously it is similar to Dongodytes (s. str.) Deuve, 1993, based on elytral characters, including chaetotaxy. Hence the new genus seems to represent a lineage intermediate between Giraffaphaenops and Dongodytes (s. str.).

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<i>Yalongaphaenops erwini</i> gen. et sp. nov., the world's most high-altitude hypogean trechine beetle from China (Coleoptera, Carabidae, Trechinae).

Project description:A new genus and new species of carabid beetle, Yalongaphaenops erwini gen. et sp. nov., is described from mountains SW of Mianning City, Sichuan Province, China. This finding, from one side, extends the known distribution of Chinese hypogean trechines, and from another, it raises the upper limit of their vertical distribution to nearly 4000 m. Photographs of the habitus and major taxonomic characters, including the male genitalia, right mandible, and microsculpture patterns of the integument are supplied. The type locality of the new taxon is mapped. Yalongaphaenops gen. nov. shows some similarities with the genus Shiqianaphaenops Tian, 2016 from eastern Guizhou and the genus Boreaphaenops Uéno, 2002 described from Hubei, China. However, the direct relationships of the new genus remain unclear. Further new discoveries of hypogean trechines in Sichuan are necessary to evaluate possible variation of major characters in allied taxa. Although Y. erwini sp. nov. was collected at an elevation exceeding 3800 m a.s.l., it conforms to the upper limit of the forest zone being approximately on par with the vertical distribution of some high altitude hypogean trechine species in other parts of the globe.

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Occurrence of cavernicolous ground beetles in Anhui Province, eastern China (Coleoptera, Carabidae, Trechinae).

Project description:Two new species of anophthalmic ground beetles belonging to the subfamily Trechinae are described: Cimmeritodes (Zhecimmerites) parvus Tian & Li, sp. n. and Wanoblemus wui Tian & Fang, gen. n., sp. n. Both were discovered in the limestone caves of Anhui Province in eastern China. Cimmeritodes (Zhecimmerites) parvus was found in caves Ziwei Dong, Xianren Dong and Qingtai Dong, whereas Wanoblemus wui was discovered in cave Baiyun Dong. This is the first record of cavernicolous ground beetles in Anhui Province, eastern China.

| S-EPMC5096365 | biostudies-literature

A new highly cave-adapted trechine genus and species from northern Guizhou Province, China (Coleoptera, Carabidae, Trechinae).

Project description:A remarkable aphaenopsian beetle, a sympatric species of Qianotrechus tenuicollis Uéno, 2000, was newly discovered in Cave Mahuang Dong of Shuanghe Dong cave system, the longest cave system of China in Suiyang County, northern Guizhou Province. To categorize this striking but still unknown species, a new genus and species are proposed: Shuangheaphaenops elegansgen. n., sp. n. Relationships of Shuangheaphaenops and other highly modified aphaenopsian genera from southern China Karsts are discussed.

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Contributions to the knowledge of subterranean trechine beetles in southern China's karsts: five new genera (Insecta, Coleoptera, Carabidae, Trechinae).

Project description:Recent discoveries reveal that southern China's karsts hold the most diverse and morphologically modified subterranean trechine beetles in the world, albeit the first troglobitic blind beetle was only reported in the early 1990's. In total, 110 species belonging to 43 genera of cavernicolous trechines have hitherto been recorded from the karsts of southern China, including the following five new genera proposed below: Shiqianaphaenops Tian, gen. n., to contain two species: Shiqianaphaenops majusculus (Uéno, 1999) (= Shenaphaenops majusculus Uéno, 1999, comb. n.), the type species from Cave Feng Dong, Shiqian, Guizhou, and Shiqianaphaenops cursor (Uéno, 1999) (= Shenaphaenops cursor Uéno, 1999, comb. n.), from Cave Shenxian Dong, Shiqian, Guizhou; and the monotypic Dianotrechus Tian, gen. n. (the type species: Dianotrechus gueorguievi Tian, sp. n., from Cave Dashi Dong, Kunming, Yunnan), Tianeotrechus Tian & Tang, gen. n. (the type species: Tianeotrechus trisetosus Tian & Tang, sp. n., from Cave Bahao Dong, Tian'e County, Guangxi), Huoyanodytes Tian & Huang, gen. n. (the type species: Huoyanodytes tujiaphilus Tian & Huang, sp. n., from Longshan, Hunan) and Wanhuaphaenops Tian & Wang, gen. n. (the type species: Wanhuaphaenops zhangi Tian & Wang, sp. n., from Cave Songjia Dong, Chenzhou, Hunan).

| S-EPMC4820093 | biostudies-literature

Two new genera and three new species of cavernicolous trechines from the western Wuling Mountains, China (Coleoptera, Carabidae, Trechinae).

Project description:Two new genera and three new species of cave-adapted ground beetles belonging to the tribe Trechini are established and described: Wulongiusqilinger gen. nov. and sp. nov. from limestone cave Qiankou Dong (Chongqing: Wulong), Qianotrechuscongcongae sp. nov. from cave Shigao Dong (Chongqing: Nanchuan), and Qianlongiuszhoui gen. nov. and sp. nov. from cave Qianlong Dong (Guizhou: Songtao). Wulongiusqilinger sp. nov. is a small aphaenopsian beetle with a thin and elongated body, while Qianlongiuszhoui sp. nov. is a semi-aphaenopsian with a stout body. Both new genera are not closely related to any genus of Trechini occurring in the South China Karst, and so their systematic positions remain unclear.

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A review of the cavernicolous genus <i>Guiaphaenops</i> Deuve, with the description of a new species (Coleoptera, Carabidae, Trechinae).

Project description:The subterranean ground beetle genus Guiaphaenops Deuve, 2002 is taxonomically reviewed. This poorly known genus is different from Guizhaphaenops Vigna Taglianti, 1997 in having convex propleura which is visible from above and elytral chaetotaxy especially the humeral group of the marginal umbilicate series, in which the 1st pore is transversely and backwardly shifted. The second species, G. deuvei Tian, Feng & Wei, sp. n., is described from a limestone cave at Yangli Cun (Village), Lingyun Xian (County), Baise Shi (Prefecture), northwestern Guangxi Zhuang Autonomous Region, China. A key to the species and a distribution map of Guiaphaenops are also provided.

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A new remarkable subterranean beetle of the Rhodopes: Paralovricia gen. n. beroni sp. n. belonging to Lovriciina new subtribe (Coleoptera, Carabidae, Trechinae, Bembidiini).

Project description:Paralovriciagen. n.beronisp. n., belonging to the new subtribe Lovriciina, is described from two caves in the Western Rhodopes (Bulgaria): Kraypatnata peshtera, near Smilyan Village (Smolyan Municipality) and Snezhanka, near Peshtera Town (Peshtera Municipality). Three currently known genera, Lovricia Pretner, 1979, Neolovricia Lakota, Jalži? & Moravec, 2009 and Paralovriciagen. n. represent a monophyletic unit supported by important synapomorphies that allows to propose the establishment of the new subtribe Lovriciina, characterized by the following characters: last maxillary palpomeres very long and narrow, basal angles of pronotum without seta, elytra without discal setae, elytral umbilicate series of nine pores in which the main pores are the 2nd, 6th and 9th, apical recurrent striole absent and mesotibial apex expanded outward. Its systematic position within the subfamily Trechinae (sensu Lorenz 2005) is discussed and Lovriciina is placed near Anillina. Key to the genera of the subtribe is proposed. Distribution data and zoogeographical hypotheses are discussed.

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A contribution to Dongodytes (s. str.) Deuve, 1993 (Coleoptera, Carabidae, Trechinae).

Project description:The hypogean genus Dongodytes Deuve, 1993, one of the most cave-adapted genera of ground beetles, is distributed in northern Guangxi, ranging from Mashan through Du'an, Bama, and Fengshan to Tian'e. Review of nominate subgenus Dongodytes Deuve, 1993, with new records for D. fowleri Deuve, 1993 and D. grandis Uéno, 1998 are provided. Meanwhile, Dongodytes tonywhittenisp. n. is described from a limestone cave in Bama County. This interesting species is dedicated to the late Dr. Tony Whitten, a well-known cave biodiversity conservationist in Asia. A key to all species of Dongodytes (s. str.) is also provided.

| S-EPMC6045681 | biostudies-other

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