Pselaphodes declinatus 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: 10-14

publication ID

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

persistent identifier

http://treatment.plazi.org/id/03BE527D-FFB9-B53B-FF55-9367B558F9E2

treatment provided by

Plazi

scientific name

Pselaphodes declinatus Yin, Li & Zhao
status

sp. nov.

Pselaphodes declinatus Yin, Li & Zhao  sp. nov.

( Figs. 10View FIGURES 9 – 12, 22View FIGURES 13 – 24, 44, 45, 46, 71, 72, 82, 83, 86, 99, 120, 121, 128, 147, 172, 173, 186)

Type material. Holotype: CHINA: Zhejiang Prov.: 3, Fengyangshan Mt. (27 ° 57 ’ 34 ”N 119 ° 14 ’ 53 ”E), elev. 1,520 m, Shi-You Ma & Sheng-Long Liu leg., 11.xi. 2007 ( SIPPE).

Description. Male. Body ( Fig. 10View FIGURES 9 – 12) brown, elytra reddish-brown, maxillary palpi and tarsi lighter in color; body length 3.58 mm, combined width of elytra 1.32 mm.

Head about as long as wide, frontal margin anterior to eyes narrowed toward apex. Antenna ( Fig. 99View FIGURES 90 – 101) covered by short pubescence, with scape elongate and weakly expanded, three times as long as wide and as long as next three segments combined, lateral side with a large elongate sensory fovea, antennomeres II –IV subequal in length, V slightly longer than IV, VI 1.5 times as long as IV, VII nearly quadrate, asymmetrical expanded on inner side, VIII quadrate, nearly symmetrical, about as long as pedicel, IX –X strongly modified, IX similar to that of P. walkeri  but broader and not pointed at apex, X as long as wide, extremely curved mesally on inner side, XI elongate, 1.5 times as long as X, somewhat rounded at apex. Maxillary palpus ( Fig. 147View FIGURES 138 – 149) with palpomere I minuscule, II short and pedunculate, II –IV each protuberant on lateral margin. Mandibles ( Fig. 128View FIGURES 126 – 137) each with four teeth on mesal margin.

Pronotum longer than wide, coarsely punctured and densely pubescent. Elytra ( Fig. 22View FIGURES 13 – 24) covered with long hair. Hind wing ( Fig. 86View FIGURES 86 – 89) fully developed, widest in the middle, narrowed at apex. Mesoventral lateral fovea, mesoventral median fovea and metaventral lateral fovea well defined; two relatively short basal metaventral processes ( Figs. 82, 83View FIGURES 78 – 85). Fore legs (Fig. 71) with trochanters and femora each having a big spine on posterior margin, mesotrochanters (Fig. 72) and femora each with a small apical spine.

Abdomen (Figs. 44–46) with tergite IV about twice as long as V, tergite VIII (Fig. 121) slightly transverse, emarginate at apex, sternite VIII (Fig. 120) narrowed at apex, emarginate medially.

Aedeagus ( Figs. 172, 173View FIGURES 162 – 173) with median lobe curved and pointed at apex in lateral view; endophallus ( Fig. 186View FIGURES 174 – 186) with a very long and elongate spine, constricted throughout length, pointed at apex; parameres paired, short and almost symmetrical, each with two setae at apex, basal plate of parameres lobed, each half gradually narrowed toward apex.

Female unknown.

Remarks. This species is characteristic in its remarkable antennal club with unique modification (see description of the species), short median metaventral processes, and unique shape of the aedeagus.

FIGURES 52–63. Fore (Figs. 52, 54, 56, 58, 60, 62) and middle (Figs. 53, 55, 57, 59, 61, 63) legs of Pselaphodes  . 52, 53 — P. walkeri (Sharp)  ; 54, 55 — P. miraculum  sp. nov.; 56, 57 — P. nomurai  sp. nov.; 58, 59 — P. torus  sp. nov.; 60, 61 — P. cornutus  sp. nov.; 62, 63 — P. wuyinus  sp. nov. Scale bars: 0.5 mm.

FIGURES 64–77. Fore (Figs. 64, 66, 68, 71, 73, 75), middle (Figs. 65, 67, 69, 72, 74, 76) and hind (Figs. 70, 77) legs of Pselaphodes  . 64, 65 — P. tianmuensis  sp. nov.; 66, 67 — P. hlavaci  sp. nov.; 68–70 — P. aculeus  sp. nov.; 71, 72 — P. declinatus  sp. nov.; 73, 74 — P. latilobus  sp. nov.; 75–77 — P. subtilissimus  sp. nov. Scale bars: 0.5 mm.

Distribution. China (Zhejiang Province).

Etymology. The species name is a participle derived from the Latin verb " declino " ("to turn away, deviate") and refers to the strange shape of antennal club.

FIGURES 102–125. Ventrite VIII (Figs. 102, 104, 106, 108, 110, 112, 114, 116, 118, 120, 122 and 124) and tergite VIII (Figs. 103, 105, 107, 109, 111, 113, 115, 117, 119, 121, 123 and 125) of Pselaphodes  . 102, 103 — P. walkeri (Sharp)  ; 104, 105 — P. miraculum  sp. nov.; 106, 107 — P. nomurai  sp. nov.; 108, 109 — P. torus  sp. nov.; 110, 111 — P. cornutus  sp. nov.; 112, 113 — P. wuyinus  sp. nov.; 114, 115 — P. tianmuensis  sp. nov.; 116, 117 — P. hlavaci  sp. nov.; 118, 119 — P. latilobus  sp. nov.; 120, 121 — P. declinatus  sp. nov.; 122, 123 — P. aculeus  sp. nov.; 124, 125 — P. subtilissimus  sp. nov. Scale bars: 0.5 mm.