Pselaphodes cornutus Yin, Li & Zhao

Yin, Zi-Wei, Li, Li-Zhen & Zhao, Mei-Jun, 2010, Taxonomical study on the genus Pselaphodes Westwood (Coleoptera: Staphylinidae: Pselaphinae) from China. Part I., Zootaxa 2512, pp. 1-25: 9-10

publication ID

http://doi.org/ 10.5281/zenodo.294046

persistent identifier

http://treatment.plazi.org/id/03BE527D-FFB8-B53F-FF55-95C4B5D7F93A

treatment provided by

Plazi

scientific name

Pselaphodes cornutus Yin, Li & Zhao
status

sp. nov.

Pselaphodes cornutus Yin, Li & Zhao  sp. nov.

( Figs. 5View FIGURES 5 – 8, 17View FIGURES 13 – 24, 33, 34, 60, 61, 80, 81, 94, 110, 111, 132, 142, 158, 159, 183)

Type material. Holotype: CHINA: Henan Prov.: 3, Funiushan Mt. (35 ° 14 ’ 37 ”N 112 ° 59 ’ 48 ”E), elev. 1,400–1,700 m, Jia-Yao Hu, Liang Tang & Li-Long Zhu leg., 2.viii. 2004. Paratypes: CHINA: Henan Prov.: 10 ƤƤ, same data as holotype (all SHNUC).

Description. Body ( Fig. 5View FIGURES 5 – 8) reddish-brown, abdomen slightly darker, maxillary palpi and tarsi lighter in color; body length 3.74 mm, combined width of elytra 1.41 mm.

Head longer than wide, frontal margin anterior to eyes narrowed toward apex. Antenna ( Fig. 94View FIGURES 90 – 101) long and slender, with scape more than three times as long as pedicle, about three times as long as wide, antennomeres from pedicel to antennomere IV equal in length, V longer than IV, VI longer than V, VII shorter than VI, but longer than V, antennomere VIII about as long as pedicel, IX –XI forming a club, IX elongate, narrowed at base, expanded toward apex, antennomere X similar to IX, but much smaller, XI straight at base, expanded near middle, narrowed at apex. Maxillary palpus ( Fig. 142View FIGURES 138 – 149) with segment I tiny, II pedunculate, III nearly triangular, IV elongate and nearly fusiform, II –IV each protuberant on outer side. Mandibles ( Fig. 132View FIGURES 126 – 137) each with four teeth on mesal margin.

FIGURES 25–36. Abdomen of Pselaphodes  , dorsal (Figs. 25, 27, 29, 31, 33, 35) and ventral (26, 28, 30, 32, 34, 36) views. 25, 26 — P. walkeri (Sharp)  ; 27, 28 — P. miraculum  sp. nov.; 29, 30 — P. nomurai  sp. nov.; 31, 32 — P. torus  sp. nov.; 33, 34 — P. cornutus  sp. nov.; 35, 36 — P. wuyinus  sp. nov. Scale bars: 0.5 mm (a,c), 0.3 mm (b,d,e,f).

FIGURES 37–51. Abdomen of Pselaphodes  , dorsal (Figs. 37, 39, 42, 44, 47, 49), ventral (Figs. 38, 41, 43, 46, 48, 51) and lateral (Figs. 40, 45, 50) view. 37, 38 — P. tianmuensis  sp. nov.; 39, 40, 41 — P. subtilissimus  sp. nov.; 42, 43 — P. latilobus  sp. nov.; 44, 45, 46 — P. declinatus  sp. nov.; 47, 48 — P. hlavaci  sp. nov.; 49–51 — P. aculeus  sp. nov. Scale bars: 0.3 mm (a –e); 0.5 mm (f).

Pronotum almost quadrate, slightly longer than wide, narrowed toward apical margin. Elytra ( Fig. 17View FIGURES 13 – 24) narrowed at base, each with three basal foveae, covered with long hair at apex,. Metaventrite ( Figs. 80, 81View FIGURES 78 – 85) with two long horn-like processes narrowed toward apex in lateral view. Legs (Figs. 60, 61) long and slender, protrochanters, profemora, mesotrochanters, and mesofemora each with a spine.

Abdomen (Figs. 33–34) with tergite IV twice as long as V, two ribs reaching one-third of tergal length; tergite VIII (Fig. 111) slightly transverse, narrowed at apex and slightly emarginated in the middle, sternite VIII (Fig. 110) strongly emarginate apically.

Aedeagus ( Figs. 158, 159View FIGURES 150 – 161) with median lobe broadened throughout length in lateral view, curved leftward at apex in dorsal view; endophallus ( Fig. 183View FIGURES 174 – 186) with three spines, dorsal one longest, remaining two stout and acute at apex; parameres paired, almost symmetrical.

Female. Similar to male, but metaventral horn-like processes absent.

Remarks. This species is characterized by the unique shape of the antennal club, and can be readily identified by the aedeagus with the median lobe expanded throughout length.

Distribution. China (Henan Province).

Etymology. The species name is an adjective (" cornutus  " (Latin) means "horned") and refers to the long basal metaventral processes.