Stenus stigmifer, 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 : 585

Stenus stigmifer nov.sp. ( Figs 25 , 36, 37 , 119 )

T y p e m a t e r i a l: Holotype () and 1 - paratype: TAIWAN: Chiai Hsien: Alishan, Sister ponds, 2180 m, 26.IV.1990, leg. A. Smetana (T 34) . Paratypes: 5, 2: near Tadongshan , 10., 11.VIII.1978, 14.VIII.1983, Y. Shibata ; Nantou Hsien: 1: Kao-Leng Dyi , 18 km W of Wushe, 24 o 4.561’N, 121 o 8.046’E, 1945 m, swept from vegetation, 18.-19.IV.2002, leg. D. Austine, Gy. Fábián & O. Merkl. - HT in coll. A. Smetana (Ottawa), paratypes in the Budapest Zoological Museum, in coll. Shibata and in cP .

D e s c r i p t i o n: Macropterous, black, each elytron with an orange spot in posterior middle (figs 36, 37), moderately shiny, forebody coarsely and very densely punctate, abdomen moderately coarsely (anteriorly) to finely (posteriorly), densely punctate; pubescence short, recumbent. Antennae brownish, club infuscate. Maxillary palpi yellowish, segment 3 infuscate. Paraglossae conform. Legs reddish brown, knees infuscate. Clypeus black, labrum dark brown, moderately densely pubescent.

Length: 5.0- 6.5 mm (forebody: 2.4-2.8 mm).

PM of the HT: HW: 45; DE: 23; PW: 34; PL: 36M; EW: 51; EL: 51; SL: 41.

M a l e: Same as in S. stigmosus , but the apical emargination of sternite 8 broader. Aedeagus (fig. 119) similar to that of S. stigmosus , but the apical portion of the median lobe less broad and triangularly narrowed, parameres with 14-16 setae in apical third.

F e m a l e: Same as in S. stigmosus . Spermatheca (fig. 25).

In many respects same as S. stigmosus , but the head narrower and the punctuation of the foreparts slightly less coarse. Elytra shorter, the orange spot of different size: in the HT nearly two thirds as long as one elytron (fig. 36), in the PTT much smaller, less than one quarter as long as one elytron. Punctation of the abdomen notably different, slightly less coarse and distinctly denser: on tergite 4 interstices are on the average smaller than half diameter of punctures, on tergite 7 punctures are smaller than one eye facet near dorsal eye margin, interstices slightly larger than punctures.

C o m p a r a t i v e n o t e s: This new species belongs also to the S. stigmaticus - group and may be distinguished from its relatives as indicated at S. stigmosus (see above).- For identification amongst the Taiwanese species see key.

E t y m o l o g y:" stigmifer " (Lat.) = with stigmata.

Figures

Figs 11-25: Pronotum (11, 12), expulsion hook (13), dorsal aspect of abdominal segments 6 and 7 (14, 15), spermatheca (16, 20-25), lateral portion of median lobe (17), ventral aspect of a detail of the anterior portion of median lobe (18, 19) of Stenus gestroi FAUVEL (11, Carin Cheba; 12, Arni Gad; 13, 17, Tokara Is.; 14, Nanshanchi; 15, Peiyuan), S. electrigemmeus nov.sp. (16, PT 152; 18, HT), S. electrigemmatus nov.sp. (19, HT), S. mithracifer nov.sp. (20, PT), S. miwai BERNHAUER (21, Mt. Karapin), S. virgula FAUVEL (22, Lebong), S. bicolon posticus FAUVEL (23, Malaysia: Bringchang), S. stigmosus nov.sp. (24, PT, T 3) and S. stigmifer nov.sp. (25, PT, Kaolin).

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).