Biodiversity Data Journal :
Single Taxon Treatment
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Corresponding author: Rostislav Bekchiev (bekchiev@nmnhs.com)
Academic editor: Stylianos Chatzimanolis
Received: 05 Sep 2019 | Accepted: 27 Sep 2019 | Published: 03 Oct 2019
© 2019 Rostislav Bekchiev, Zi-Wei Yin, Manh Quang Vu, My Ha Tra, Hanh Hoang Nguyen
This is an open access article distributed under the terms of the Creative Commons Attribution License (CC BY 4.0), which permits unrestricted use, distribution, and reproduction in any medium, provided the original author and source are credited.
Citation:
Bekchiev R, Yin Z-W, Quang Vu M, Tra MH, Nguyen HH (2019) Description of a new Pselaphodes Westwood (Coleoptera: Staphylinidae: Pselaphinae) from Vietnam. Biodiversity Data Journal 7: e46327. https://doi.org/10.3897/BDJ.7.e46327
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A new species of the genus Pselaphodes Westwood, P. fansipanensis Bekchiev & Yin sp. n., is described from northern Vietnam. The unique modification of the antennomeres 9–10 of the male readily separates the new species from all known congeners.
New Pselaphodes species from Vietnam
Asia, Indochina, Tyrini, taxonomy, new species
The Pselaphinae (Coleoptera: Staphylinidae) fauna of Vietnam is poorly studied. Until now, 112 species (
In September 2018, a short expedition to southern and northern Vietnam was organised by the Institute of Ecology and Works Protection (Hanoi) and the National Museum of Natural History (Sofia), giving the opportunity to collect rich zoological material. One of the visited localities was Fansipan Mountain and, especially, the Fansipan Summit. It is the highest (3,143 metres a.s.l.) mountain in the Indochinese Peninsula (including Vietnam, Laos and Cambodia), hence its nickname "the Roof of Indochina”.
Included in the material was a new Pselaphodes species, which is described below.
The material was collected in an open habitat with shrubs and grasses (Fig.
Specimens were examined by Zeiss Stemi 2000C stereo-microscopes. Male genitalia and other dissected parts were studied using a Zeiss transmitted-light microscope at magnifications up to 500x. Genital segments were dissected and treated with potassium hydroxide (KOH). The dissected parts were mounted in Euparal and pinned with the relevant specimen.
The following acronyms are used in the text: BL—length of the body (= HL + PL + EL + AL); HL—length of the head from the anterior clypeal margin to the occipital constriction; HW—width of the head across eyes; PL— length of the pronotum along the midline; PW—maximum width of the pronotum; EL—length of the elytra along the suture; EW—maximum width of the elytra; AL—length of dorsally visible part of the abdomen along the midline; AW—maximum width of the abdomen; NMNHS – National Museum of Natural History, Sofia, Bulgaria
The type specimen is provided with a red printed label: ”HOLOTYPUS”, “Pselaphodes fansipanensis sp. n.”, “R. Bekchiev & Zi-Wei Yin, 2019 “ .
Male (Fig.
Antennomeres (Fig.
Length of aedeagus 0.77 mm, median lobe broad and asymmetrical, parameres elongate, endophallus with one elongate sclerite (Fig.
Female. Unknown.
The new species is named after Fansipan Summit, the type locality of the new species.
North Vietnam: Lao Cai Province.
The new species can be readily separated from all other members of the genus by the unique modification of the antennomeres 9–10 and the short, triangular metaventral processes of the male, as well as the shape of the aedeagus.
The research was supported by projects "Research on ecologically sustainable development model on the coastal area of Mekong Delta"-Code Number: 10/2017/HĐ.ĐTĐL.CN.CNN; Research on model construction of biodiversity conservation in village scale in Mui Ca Mau biosphere reserve"; Code number: ĐTĐL.CN-26/17.