Pselaphodes psomus, 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 : 181-183

publication ID	https://doi.org/ 10.5281/zenodo.3463445
DOI	https://doi.org/10.5281/zenodo.3706063
persistent identifier	https://treatment.plazi.org/id/0393879E-FF83-4B64-6420-FE071BD290CA
treatment provided by	Carolina
scientific name	Pselaphodes psomus
status	sp. nov.

Treatment

Pselaphodes psomus View in CoL sp. nov.

Figs 13A View Fig 13 , 14 View Fig 14 A-L

Type material (23 specimens): Holotype; MHNG- ENTO-44009; ♂; NEPAL, ‘ NEPAL (Prov. Bagmati), Gul Bhanjyang , 2600 m, 6.IV.81, Löbl & Smetana’ ( MHNG) . – Paratypes; MHNG-ENTO-44010; 1 ♀; NEPAL, same label data as holotype . – MHNG- ENTO-44011; 1 ♂; NEPAL, same label data as holotype, except ‘Chaubas, 5.IV.81’. – MHNG- ENTO-44012 to 44013; 1 ♂, 1 ♀; NEPAL, same label data as holotype, except ‘ Phulchauki nr. Kathmandu , 2500 m, 10. V.81, l. Löbl’. – MHNG-ENTO-44014 to 44015; 2 ♂♂, 1 ♀; NEPAL, ‘ NEPAL, Lalitpur Distr., Phulcoki , 2700 m, 16.X.83, Smetana & Löbl’. – MHNG-ENTO-44016 & 44017; 1 ♂, 1 ♀; NEPAL, ‘ NEPAL, Lalitpur Distr., Phulcoki , 2700 m, 15.X.83, Smetana & Löbl’ . – MHNG-ENTO-44018 to 44021; 2 ♂♂, 2 ♀♀; NEPAL, ‘ NEPAL, Lalitpur Distr., Phulcoki , 2550 m, 15.X.83, Smetana & Löbl’. – MHNG-ENTO-44022; 1 ♂; NEPAL, ‘ NEPAL, Lalitpur Distr., Phulcoki , 2650 m, 13.X.83, Smetana & Löbl’. – MHNG-ENTO-44023 to 44027; 1 ♂, 4 ♀♀; NEPAL, ‘ NEPAL, Kathmandu District, Phulcoki , 2600 m, 20.IV.1982, A. & Z. Smetana’ . – MHNG-ENTO-44028; 1 ♂; NEPAL, ‘ NEPAL, Kathmandu District, Phulcoki , 2650 m, 21.IV.1982, A. & Z. Smetana’. – MHNG- ENTO-44029; 1 ♂; NEPAL, ‘ NEPAL, Phulchoki, 3.II.1982, de Rougemont’. – MHNG-ENTO-44030; 1 ♂; NEPAL ‘Nepal, Pulchoki /godabari, 2750 m, Deharveng’ (all paratypes in MHNG) .

Type locality: Nepal, Sindhupalchok District, Helambu Valley, Gul Bhanjyang, 2600 m alt.

Diagnosis of males: Length 2.95-3.06 mm. Antennomeres 9 with disc-shaped process at apex. Metaventral processes long. Protrochanters with slender ventral spine, profemora with large blunt ventral spine, protibiae with distinct spine at apex; mesotrochanters with two ventral spines, mesotibiae with small tubercle at apex. Median lobe of aedeagus extending at apex; parameres elongate and broadened at apex.

Description: Male ( Fig. 13A View Fig 13 ). Body reddish brown, BL 2.95-3.06 mm. Head as long as wide, HL 0.58- 0.62 mm, HW 0.58-0.62 mm; each eye composed of about 35 facets; with well-developed ocular canthus. Antennomeres ( Fig. 14A View Fig 14 ) 9-11 forming distinct club, antennomeres 9 with disc-shaped process at apex, antennomeres 10 projected posteriorly at base. Pronotum ( Fig. 14B View Fig 14 ) almost as long as wide, PL 0.65- 0.67 mm, PW 0.64-0.65 mm, rounded at anterolateral margins, strongly constricted at apical third. Elytra wider than long, EL 0.74-0.81 mm, EW 1.26-1.29 mm. Metaventral processes ( Fig. 14C View Fig 14 ) long. Protrochanters with slender ventral spine, profemora with large blunt ventral spine ( Fig. 14D View Fig 14 ), protibiae ( Fig. 14E View Fig 14 ) with distinct spine at apex; mesotrochanters ( Fig. 14F View Fig 14 ) with two ventral spines; mesotibiae ( Fig. 14G View Fig 14 ) with small projection at apex; metatrochanters and metafemora ( Fig. 14H View Fig 14 ) simple. Abdomen broad at base and narrowing apically, AL 0.94-1.00 mm, AW 1.38- 1.41 mm. Sternite IX semi-membranous, shape as in Fig. 14I View Fig 14 . Length of aedeagus ( Figs 14 View Fig 14 J-L) 0.86 mm; median lobe slightly asymmetric, strongly extended and constricted apically; parameres rather elongate and apically broadened; endophallus composed of one long and one short sclerites.

Female. Each eye composed of about 23 facets; antennae simple. Measurements: BL 2.99-3.02 mm, HL 0.56- 0.58 mm, HW 0.56-0.58 mm, PL 0.65-0.70 mm, PW 0.64-0.67 mm, EL 0.67-0.71 mm, EW 1.25-1.28 mm, AL 1.05-1.09 mm, AW 1.41-1.44 mm.

Distribution: Nepal, Bagmati.

Comparative notes: The new species belongs to the P. bagmatius species-group, and is most similar to P. smetanai described below in sharing similar forms of the antennal clubs, and the median lobe of the aedeagus being strongly extending apically. Pselaphodes psomus can be separated from P. smetanai only based on the slightly different position of the apical process of the antennomeres 9, the relatively longer metaventral processes with a different form of the apex, and the longer ventral spine of the profemora.

Etymology: The specific epithet refers to the round apical process of male antennomeres 9 of the new species.