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

ABSTRACT: 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.

SUBMITTER: Tian M

PROVIDER: S-EPMC8433127 | biostudies-literature |

REPOSITORIES: biostudies-literature

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Project description:Globally, the great majority of Anillini species are endogean, adapted to live in the interstices of soil and leaf litter, while the extremely low vagility of these minute ground beetles gives rise to numerous shortrange endemic species. Until recently the Australian Anillini fauna was known only from leaf litter in rain forests and eucalypt forests in the wetter, forested regions of eastern and south eastern Australia, as well as Lord Howe and Norfolk islands. The first hypogean Anillini in Australia (17 species in six genera) were described in 2016 from mineral exploration drill holes in iron-ore bearing rocks of the Pilbara region in Western Australia, representing the first finding of the tribe deep underground in a semi-arid climate region. A further eight new genera and 20 new species are described herein, mostly from the Pilbara region as well as the semi-arid Kimberley and Goldfields regions; all were collected in mineral exploration drill holes. The following new genera are described: Erwinanillus gen. nov., Gregorydytes gen. nov., Pilbaraphanus gen. nov., Neoillaphanus gen. nov., Kimberleytyphlus gen. nov., Gilesdytes gen. nov., Pilbaradytes gen. nov., and Bylibaraphanus gen. nov. The following new species are described: Erwinanillus baehri sp. nov.; Gracilanillus hirsutus sp. nov., G. pannawonicanus sp. nov.; Gregorydytes ophthalmianus sp. nov.; Pilbaraphanus chichesterianus sp. nov., P. bilybarianus sp. nov.; Magnanillus firetalianus sp. nov., M. sabae sp. nov., M. salomonis sp. nov., M. regalis sp. nov., M. serenitatis sp. nov.; Neoillaphanus callawanus sp. nov.; Kimberleytyphlus carrboydianus sp. nov.; Austranillus jinayrianus sp. nov.; Gilesdytes pardooanus sp. nov., G. ethelianus sp. nov.; Pilbaradytes abydosianus sp. nov., P. webberianus sp. nov.; Bylibaraphanus cundalinianus sp. nov.; and Angustanillus armatus sp. nov. Identification keys are provided for all Australian anilline genera, and Western Australian species. All the described species are known from a single locality and qualify as short-range endemics. The Anillini are recognised as a significant and diverse element making up part of Western Australia's remarkable subterranean fauna, and whose conservation may potentially be impacted by mining developments.

Dataset Information

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

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