Lispocephala setilobata, Xue & Zhang, 2011

Xue, W. - Q. & Zhang, X. - S., 2011, Geographic Distribution Of Lispocephala Pokorny (Diptera: Muscidae), With Descriptions Of New Species From China, Acta Zoologica Academiae Scientiarum Hungaricae 57 (2), pp. 161-202 : 191-194

Lispocephala setilobata sp. n.

( Figs 87–94 )

Holotype: male, Pianmayakou (25°58’N, 98°49’E), Hushui County, Yunnan province, 3153 m, 8. vii. 2009, collected by SHUAI WANG.

Paratype: male, Mt. E’mei (29°32’N, 103°19’E), Sichuan Province, 1800–2000 m, 20. viii. 1957, collected by KEREN HUANG .

Male: Body length 3.7–4.2 mm.

Head: Eyes bare, lower posterior margin not concave. Frons at vertex about 0.35 times as wide as head, lower part wider. Frontal vitta dark brown in ground colour, with gray pruinosity, twice as wide as fronto-orbital plate, sometime lower part of frons yellow. Frontal triangle with gray to brown-gray pruinosity, reaching anterior margin of frons. Ocellar developed, as long as lower part frons width. Outer vertical seta longer than posterior vertical, about 2/3 of ocellar. Distance between orbital setae about 1.5 times as long as that between frontal setae. Face, parafacial and gena dark in ground colour, with gray pruinosity. Parafacial about 2/5 of flagellum 1 width. Gena about 1/8 of eye height. Occiput dark, with gray pruinosity and black setae. Pedicel and basal half of flagellum 1 red-yellow, apical half of flagellum 1 brown, flagellum 1 about 2–2.5 times as long as pedicel. Distance between end of antenna and epistoma about 1/3 of flagellum 1 length. Arista short ciliated in basal half, the longest hair about 1/2–2/3 of flagellum 1 width, arista bare in apical half. Palpi yellow, about 1.2 times as long as prementum. Haustellum brown-yellow.Prementum brown, 2.5 times as long as high, labella as long as prementum height, posterior margin of labella with a median tooth, sheet-shaped.

Thorax: Dark in ground colour, with faint gray pruinosity, without vitta (at most with 2 rows of faint brown narrow vittae along acr and dc). Acr in two rows. 2+3 dc, anterior prst dc about 3/5 of posterior one length. 0+2 ial, without prealar seta. 2 proepisternal setae, 2 proepimeral.

Wings: Hyaline, veins yellow. Costa with ventral hairs, continuing to apex of vein M. Costal spine well marked. Calypters yellow to white, lower calypter about 1.6 times as long as upper. Halters yellow.

Legs: Trochanter, apex of femur, tibia and tarsi yellow (tarsomeres 4–5 dark), remaining brown, with thin faint pruinosity. Mid femur with 3–4 av in basal 1/4, seta-liked, 1.5 times as long as tibia diameter, 1 supra-median a, 2 subapical d, 1–2 basal developed pv. Mid tibia with 1 supra-median pd, 1.5–2 times as long as tibia diameter. Hind femur with 1 row of av and ad, 1 subapical pd, 2–3 pv in basal half, 1 subapical pv, 1 developed supra-median pv. Hind tibia with 1 av, 2 ad, 2 pd, 1 apical pv, Pulvilli small, oval, shorter than claws, claw about 1/2 of tarsomere 5 length, oviform.

Abdomen: Black in ground colour, long-spindly in dorsal view, longer than thorax, with dense blue-gray pruinosity, lower posterior margins of each tergite yellow. Tergite 3 with 1 pair of faint and narrow lateral spots, tergites 4 and 5 each with 1 pair of black rounded lateral spots, spot width about 1/2–2/3 of tergite length respectively. Each tergite with brown median vitta. Each tergite with long and developed lateral setae, body-hairs sparse. Sternite 1 bare, lateral lobes of sternite 5 yellow, projecting downwards, with characteristic tufts of long and dense setae, over end of abdomen.

Female: Unknown.

(scale bar: 0.1 mm) profile view (scale bar: 0.2 mm)

Etymology: The specific name refers to male lateral lobes of sternite 5 with characteristic tufts of long and dense setae ( Fig. 89 ). Lobulus means lobe in Latin.

Remarks: Resembles L. erythrocera (ROBINEAU-DESVOIDY, l830), but can be recognised by frontal vitta with marked gray-white pruinosity, frontal triangle faint; outer vertical seta longer than posterior vertical; lateral lobes of sternite 5 with characteristic tufts of long and dense setae ( Fig. 89 ); in posterior view, cerci narrow in distal part ( Fig. 91 ).

Figures

Figs 87–90. Lispocephala setilobata sp. n.: 87 = male abdomen, dorsal view (scale bar: 1 mm); 88 = male abdomen, profile view (scale bar: 1 mm); 89 = sternite 5 (scale bar: 0.2 mm); 90 = paramere

Figs 91–94. Lispocephala setilobata sp. n.: 91 = cerci, posterior view (scale bar: 0.2 mm); 92 = sternite 5, profile view (scale bar: 0.2 mm); 93 = phallosome (scale bar: 0.2 mm); 94 = terminalia,