Besuchetaceus nepalensis , sp. n.
Creators: name: Zi-Wei Yin
name: Li-Zhen Li
Publisher: name: Zenodo
Year: 2015
Subjects: Biodiversity
Taxonomy
Animalia
Arthropoda
Insecta
Coleoptera
Staphylinidae
Besuchetaceus
Besuchetaceus nepalensis

description: Besuchetaceus nepalensis sp. n.
Figs 10-12
Holotype: ♂, NEPAL: labeled ‘Ost-Nepal, Rolwaling Himal / oberh. Simigaon, 2700-2800 m, 31.05.2000, leg. A. Kleeberg / gen. n. aff. Hingstoniella, Cl. Besuchet dét 2005 / HOLOTYPE [red], ♂, Besuchetaceus nepalensis sp. n., det. Yin & Li, 2014, MHNG’; in MHNG, without accession number.
Paratyp e: 1 ♀, labeled ‘Zentral-Nepal, Sept.-Okt. 1971, lg. H. Franz [Pa160, overleaf; according to Franz’s dairy, the detailed collection data related to this number is: Thare-Pati, low Rhododendron - Juniperus forest, 8.10.1971, small sifting sample from litter, moss and humus (Schillhammer, per. comm.)] / Tare-Pati / PARATYPE [yellow], ♀, Besuchetaceus nepalensis sp. n., det. Yin & Li, 2014, MHNG’; in MHNG, without accession number.
Description: Male (Fig. 10 A). BL 3.93 mm. Body reddish brown; most part of dorsal surface densely hairy.
Head (Fig. 11 A) transverse, HL 0.69 mm, HW 0.79 mm; vertex convex at middle, modification composed of triangular bump covered with dense setae, foveae below level of posterior margins of eyes; each eye with about 60 small facets; antennal clubs formed by apical three enlarged antennomeres (Fig. 11 B). Pronotum transverse, PL 0.76 mm, PW 0.93 mm, median longitudinal sulcus deep, lateral longitudinal sulci less developed. Elytra wider than long, EL 1.22 mm, EW 1.42 mm; shallow discal striae extending to basal 1/4 of elytral length. Metathoracic wings fully developed. Protibiae simple; mesotrochanters (Fig. 11 C) with small, sharp spine at ventral margin, mesotibiae (Fig. 11 D) with small apical spine; metatrochanters (Fig. 11 E) with ventral margin protruding to form broad projection. Abdomen wider than long, AL 1.26 mm, AW 1.28 mm. Aedeagus (Fig. 11 F-I) asymmetric, length 0.50 mm.
Female (Fig. 10 B). Similar to male in general appearance, mesotrochanters, mesotibiae, and metatrochanters lacking protuberance or projection. Each eye with about 45 facets. Tergite VIII (Fig. 11 J) and sternite VIII (Fig. 11 K) transverse. Genital complex (Fig. 11 L) transverse, width 0.45 mm. Measurements: BL 3.74 mm, HL 0.63 mm, HW 0.74 mm, PL 0.65 mm, PW 0.84 mm, EL 1.11 mm, EW 1.44 mm, AL 1.35 mm, AW 1.31 mm.
Differential diagnosis: Same as the genus, when combined with the form of the male modified vertex and leg characters, Besuchetaceus nepalensis can be readily separated from all other batrisine species.
Biology: The female paratype was sifted from a litter, moss and humus sample in a low Rhododendron - Juniperus forest on 10th October.
Distribution: Nepal: Bagmati, Janakpur (Fig. 12).
Etymology: The specific epithet refers to Nepal, the country where the type locality of the new species lies.
description: Published as part of Zi-Wei Yin & Li-Zhen Li, 2015, Review of the Himalayan genus Hingstoniella Jeannel, and description of Besuchetaceus gen. n. from Nepal (Coleoptera: Staphylinidae: Pselaphinae), pp. 165-180 in Revue suisse de Zoologie 122 (1) on pages 175-180, DOI: 10.5281/ZENODO.14576