Stenus shibatai, Puthz, 2011

Puthz, V, 2011, On the Stenus LATREILLE 1797 from Taiwan with spotted elytra including remarks on the S. gestroi-group (Coleoptera, Staphylinidae) (316 Contribution to the Knowledge of Steninae), Linzer biologische Beiträge 43 (1), pp. 565-596 : 581-582

Stenus shibatai nov.sp. ( Figs 33 , 109 )

T y p e m a t e r i a l: Holotype () and 2 - paratypes: TAIWAN: Taoyuan Hsien: near Mt. Lalashan , 25.VII.1978, Y. Shibata . Paratypes: 1, 2: ibidem, 24.VII.1978, Y. Shibata; 1: Nantou Hsien: Sungchuankang (2400 m), 3.VIII.1983, Y. Shibata. - HT and PTT in coll. Shibata, PTT also in cP .

D e s c r i p t i o n: Micropterous, black with some brownish hue, each elytron with a slightly elevated oval orange spot (fig. 33), moderately shiny, forebody coarsely and densely punctate, abdomen coarsely, moderately densely punctate; pubescence short, recumbent. Antennae yellowish, club infuscate. Maxillary palpi yellowish, segment 3 slightly infuscate. Paraglossae oval. Legs reddish brown. Clypeus black, labrum dark brown, moderately densely pubescent.

Length: 5.0-6.0 mm (forebody: 2.4-2.7 mm).

PM of the HT: HW: 37; DE: 20; PW: 26.5; PL: 29; EW: 31; EL: 33; SL: 24; SpL: 15.

M a l e: Same as in S. electristigma . Sternite 8 apically with a narrow rounded notch about one eighth as long as the sternite. Aedeagus (fig. 117), median lobe with a narrowly prominent apical tip, broad expulsion hooks and a weakly sclerotized flagelliform tube; parameres slightly longer than median lobe, weakly sclerotized at narrowed apices, with 3+4 lang setae.

F e m a l e: Same as in S. electristigma .

C o m p a r a t i v e n o t e s:Inmostrespectsas S. electristigma , but the abdominal punctuation less coarse and less dense: on tergite 4 the interstices are on the average slightly larger than punctures, on tergite 7 distinctly larger than punctures. The reticulation of the abdomen is less deep than in S. electristigma .

This species belongs to the S. indubius -group. For identification amongst the Taiwanese species see key.

E t y m o l o g y: This is species is named in honour of Mr. Yasutoshi Shibata (Tokyo), who collected the type specimens and in appreciation of his merits in the staphylinid research of the Taiwanese fauna.

Figures

Figs 26-45: Elytra (26, 28, 30, 31, 33-43), dorsal and lateral aspect of abdominal segments (27, 29, 32, 44) and ventral aspect of abdominal segments 6 and 7 (45) of Stenus mithracifer nov.sp. (26, HT; 27, PT), S. electrigemmeus nov.sp. (28, HT; 29, PT), S. electrigemmatus nov.sp. (30, HT), S. electristigma nov.sp. (31, HT; 32, PT), S. shibatai nov.sp. (33, HT), S. shibataiellus nov.sp. (34, HT), S. shibataianus nov.sp. (35, HT), S. stigmifer nov.sp. (36, HT; 37, PT, T 24), S. bilunatus PUTHZ (38, T 86), S. bigemmatus nov.sp. (39, HT), S. bigemmosus nov.sp. (40, HT), S. bilunatior nov.sp. (41, PT, T 127), S. bilunatoides nov.sp. (42, PT, T 155), S. bistigmosus nov.sp. (43, HT), S. miwai BERNHAUER (44, Henglou), S. bicolon SHARP (45, Tengchih).

Figs 108-121: Ventral aspect of aedeagus/apical portion oft the median lobe (108-111, 114, 116- 119), spermatheca (112, 113, 15), apical portion of valvifer (120, 121) of Stenus mithracifer nov.sp. (108, HT), S. shibatai nov.sp. (109, PT), S. shibataianus nov.sp. (110, HT; 112, 120, PTT), S. shibataiellus nov sp. (111, HT), S. electristigma nov.sp. (113, 117, 121, PTT), S. cirricinctus PUTHZ (14, HT), S. arisanus CAMERON (115, Alishan), S. electrigemmeus nov.sp. (116, HT), S. stigmosus nov.sp. (116, PT), S. stigmifer nov.sp. (119, HT). Scale bar = 0.1 mm (108 = 109-115, 120, 121; 116 = 117-119).