Pselaphodes bilobatus, Huang, Meng-Chi & Yin, Zi-Wei, 2019

Huang, Meng-Chi & Yin, Zi-Wei, 2019, The Pselaphodes (Coleoptera: Staphylinidae: Pselaphinae) of Nepal, Revue suisse de Zoologie 126 (2), pp. 165-196 : 168-172

publication ID	https://doi.org/ 10.5281/zenodo.3463445
DOI	https://doi.org/10.5281/zenodo.3706079
persistent identifier	https://treatment.plazi.org/id/0393879E-FF90-4B71-66C1-F95F1E4896CF
treatment provided by	Carolina
scientific name	Pselaphodes bilobatus
status	sp. nov.

Treatment

Pselaphodes bilobatus View in CoL sp. nov.

Figs 4A View Fig 4 , 5 View Fig 5 A-L

Type material (12 specimens): Holotype; MHNG- ENTO-43969; ♂; NEPAL, ‘ NEPAL, Khandbari District, above Sheduwa , 3000 m, 31.III.-1.IV.1982, A. & Z. Smetana’ ( MHNG) . – Paratypes; MHNG-ENTO-43970 to 43974; 2 ♂♂, 3 ♀♀; NEPAL, same label data as holotype . – MHNG-ENTO-43975; 1 ♀; NEPAL; same label data as for preceding, except ‘ 2.IV.1982 ’. – MHNG-ENTO-43976; paratype, 1 ♂; NEPAL; ‘ NEPAL, Khandbari District , “Bakan” W of Tashigaon 3200 m, 5.IV.1982, A. & Z. Smetana’ . – MHNG- ENTO-43977 to 43980; 1 ♂, 3 ♀♀; NEPAL, ‘E. NEPAL: KOSI Crête N-E Mangmaya , 2800 m, 7.IV.84, Löbl - Smetana’ (all paratypes in MHNG) .

Type locality: Nepal, Sankhuwasabha District, Khandbari, 3000 m alt.

Diagnosis of males: Length 3.02-3.29 mm. Antennomeres 9 with projection at apex, antennomeres 10 with projection at base. Metaventral processes long, apically expanded, with additional pair of small triangular projections. Protrochanters with small ventral spine, profemora with large, blunt ventral spine, protibiae with small, blunt projection at apex; mesotrochanters with acute ventral spine, mesotibiae with small spine at apex. Median lobe of aedeagus bifid apically; parameres slender at base and strongly broadened apically.

Description: Male ( Fig. 4A View Fig 4 ). Body reddish brown, BL 3.02-3.29 mm. Head longer than wide, HL 0.65- 0.68 mm, HW 0.55-0.64 mm; each eye composed of about 35 facets; with well-developed ocular canthus. Antennomeres ( Fig. 5A View Fig 5 ) 9-11 forming distinct club, antennomeres 9 with projection at apex, antennomeres 10 with projection at base. Pronotum ( Fig. 5B View Fig 5 ) longer than wide, PL 0.59-0.68 mm, PW 0.61-0.62 mm, angularly expanded at anterolateral margins, strongly constricted at apical third. Elytra wider than long, EL 0.76-0.82 mm, EW 1.06-1.25 mm. Metaventral processes ( Fig. 5C View Fig 5 ) long, apically broadened, with pair of small triangular projection in addition to long processes. Protrochanters with small ventral spine, profemora with large, blunt ventral spine ( Fig. 5D View Fig 5 ), protibiae ( Fig. 5E View Fig 5 ) with blunt projection at apex; mesotrochanters ( Fig. 5F View Fig 5 ) with acute ventral spine; mesotibiae ( Fig. 5G View Fig 5 ) with small spine at apex; metatrochanters and metafemora ( Fig. 5H View Fig 5 ) simple. Abdomen broad at base and narrowing apically, AL 1.02-1.11 mm, AW 1.09-1.40 mm. Sternite IX semimembranous, shape as in Fig. 5I View Fig 5 . Length of aedeagus ( Figs 5 View Fig 5 J-L) 0.59 mm; median lobe strongly asymmetric, bifid at apex; parameres short and apically broadened; endophallus composed of two sclerites.

Female. Each eye composed of about 30 facets; antennae simple. Measurements: BL 3.02-3.03 mm, HL 0.65- 0.68 mm, HW 0.59-0.61 mm, PL 0.62-0.65 mm, PW 0.61-0.62 mm, EL 0.71-0.73 mm, EW 1.12-1.16 mm, AL 0.99-1.02 mm, AW 1.26-1.31 mm.

Distribution: Nepal, Koshi.

Comparative notes: The new species belongs to the P. bagmatius species-group, and can be readily separated from all congeners of the group based on the angulate pronotal lateral margins, the broad male protibiae, and the unique forms of the male antennal clubs and the aedeagus.

Etymology: The specific epithet refers to the bi-lobed apex of the aedeagal median lobe of the new species.