Pselaphodes thailandicus, Huang & Li & Yin, 2018

Huang, Meng-Chi, Li, Li-Zhen & Yin, Zi-Wei, 2018, Four new species of Pselaphodes Westwood (Coleoptera: Staphylinidae: Pselaphinae) from Thailand, Laos, and China, Zootaxa 4472 (1), pp. 100-110 : 107-110

publication ID

https://doi.org/10.11646/zootaxa.4472.1.4

publication LSID

lsid:zoobank.org:pub:26A55B47-2878-4BF2-8162-F5517C9247DA

DOI

https://doi.org/10.5281/zenodo.5949406

persistent identifier

https://treatment.plazi.org/id/03DC8797-D95D-D408-7FD5-F9DCFBFC55C2

treatment provided by

Plazi

scientific name

Pselaphodes thailandicus
status

new species

Pselaphodes thailandicus , new species

( Figs 5B View FIGURE 5 , 7 View FIGURE 7 )

Type material (9 exs). Holotype: THAILAND: ♂, ‘ THAILAND: Chiang Mai, Doi Inthanon , 2500 m, 9.XI.1985, Burckhardt-Löbl’ ( MHNG) . Paratypes: THAILAND: 4 ♂♂, 2 ♀♀, same label data as holotype ( MHNG) ; 1 ♂, ‘ Thailand, Doi Inthanon Nat. Park, Chomthong Dist. , 2300 m, 29.8.1990, P. Schwendinger’ ( MHNG) ; 1 ♂, ‘ THAILAND, 23.V.87, prov. Chiang Mai, Doi Inthanon, 2300 m, P. Schwendinger’ ( MHNG).

Diagnosis of male. Length 2.93–2.94 mm; antennomere IX lacking a disc-shaped process at apex; profemur with a large, blunt projection at ventral margin; metatibia slightly expanded near the apices, with a preapical setose tuft and spine.

Description. Male ( Fig. 5B View FIGURE 5 ). Body reddish brown, BL 2.93–2.94 mm. Head about as long as wide, HL 0.59– 0.60 mm, HW 0.60–0.61 mm; each eye composed of about 30 facets; ocular canthus well-developed.

Antennomeres IX–XI ( Fig. 7A View FIGURE 7 ) enlarged, forming distinct club. Pronotum ( Fig. 7B View FIGURE 7 ) longer than wide, PL 0.65– 0.69 mm, PW 0.60–0.61 mm, rounded at anterolateral margins. Elytra wider than long, EL 0.76–0.79 mm, EW 1.07–1.10 mm. Metaventral processes ( Fig. 7C View FIGURE 7 ) short. Protrochanter ( Fig. 7D View FIGURE 7 ) with small but distinct ventral spine, profemur ( Fig. 7D View FIGURE 7 ) with large, blunt ventral projection; protibia ( Fig. 7E View FIGURE 7 ) with small, blunt projection near middle; mesotrochanter ( Fig. 7F View FIGURE 7 ) with small ventral spine, mesofemur broadly thickened ventrally; metatrochanter and metafemur simple ( Fig. 7G View FIGURE 7 ); metatibia ( Fig. 7H View FIGURE 7 ) with preapical setose tuft and spine. Abdomen broad at base and narrowed apically, AL 0.87–0.92 mm, AW 1.12–1.15 mm. Sternite IX ( Fig. 7I View FIGURE 7 ) semi-membranous. Length of aedeagus ( Fig. 7J–L View FIGURE 7 ) 0.51 mm; median lobe broadened throughout length in lateral view, curved leftward at apex in dorsal view, parameres paired, almost symmetrical.

Female. Similar to male in general; each eye composed of about 30 facets; antennae and legs simple. Measurements: BL 2.84–2.86 mm, HL 0.56–0.60 mm, HW 0.57–0.61 mm, PL 0.63–0.64 mm, PW 0.57–0.59 mm, EL 0.71–0.74 mm, EW 1.07–1.12 mm, AL 0.89–0.93 mm, AW 1.25–1.26 mm.

Distribution. Thailand: Chiang Mai.

Comparative notes. The new species is most similar to P. aculeus Yin, Li & Zhao by the presence of a subapical spine on the metatibia, and a similar form of the aedeagus. These two species may be separated primarily by the absence of a disc-like process of antennomere IX, and a less expanded subapical portion of the metatibia in P. thailandicus , whereas in different populations of P. aculeus there is always a disc-like process near the apex of the antennomere IX, and the metatibia is notably thickened in apical portion ( Yin et al. 2010, 2011).

Etymology. The specific name refers to the country where the species was found.

MHNG

Museum d'Histoire Naturelle

Kingdom

Animalia

Phylum

Arthropoda

Class

Insecta

Order

Coleoptera

Family

Staphylinidae

Genus

Pselaphodes