Empis (Planempis) prolongata Wang, Li & Yang, 2010, sp. nov.
Creators: name: Wang, Jinjing
name: Li, Zhu
name: Yang, Ding
Publisher: name: Zenodo
Year: 2010
Subjects: Biodiversity
Taxonomy
Animalia
Arthropoda
Insecta
Diptera
Empididae
Empis
Empis prolongata

description: 1. Empis (Planempis) prolongata sp. nov.
(Figs. 1, 3–4)
Diagnosis. Abdomen partly yellow at base. Legs dark brown to black except all femora reddish yellow with extreme tip black, fore and mid tibiae reddish yellow with brownish apex. M1 and M2 incomplete, not reaching wing margin. Male cercus with long dorsal finger-like arm.
Description. Male. Body length 6.1 mm, wing length 6.0 mm.
Head black, pale gray pollinose. Eyes contiguous on frons, dark yellow. Setae and setulae on head black except posteroventral surface with some pale setulae; ocellar tubercle distinct, with one pair of long oc and 2 very short posterior setulae. Antenna black except scape and pedicel slightly paler. Proboscis long, 1.6 times longer than head height, blackish with blackish setulae; palpus brownish with black ventral setulae (3 basal setulae long).
Thorax black, pale grey pollinose; scutum with 3 black vittae. Setae and setulae on thorax black; pronotum with 4 long setae; h long, 3 npl (anterior 1 npl short, weak, posterior 2 npl long, strong), acr short setulae-like and biseriate, 1 somewhat long posterior dc (distinctly longer than setulae anteriad) and 10 short setulae anteriad, 1 long strong presc (longer and stronger than posterior dc), 1 short sa, 1 long psa; scutellum with two pairs of setae (basal pair short, apical pair long, strong). Laterotergite with fan of long pale setulae. Prosternum with some long pale setulae laterally. Legs dark brown to black except all femora reddish yellow with extreme tip black, fore and mid tibiae reddish yellow with brownish apex. Setulae and setae on legs black except fore and mid coxae with some pale setulae anteriorly. Fore and mid femora subequal in thickness, hind femur 1.3 times as thick as mid femur. Hind tibia and tarsomere 1 slightly thickened. Fore tibia with 2 ad on apical half, apically with 1 av and 1 pv. Mid tibia with 3 ad and 1 av, apically with 1 weak d, 1 strong av and 1 strong pv. Hind tibia with two rows of irregular dorsal setae, apically with 4 setae. Hind tarsomere 1 with 2 ad and 1 weak pd. Wing nearly hyaline; dark brown stigma long, narrow; veins dark brown, M1 and M2 incomplete. Squama dark yellow, bordered with pale setulae. Halter yellow with brown base.
Abdomen black with pale gray pollen except tergites 2–3 dark yellow laterally, sternites 1–3 yellow and sternites 4–5 blackish. Setulae and setae on abdomen black except tergites 1–3 with pale setulae laterally and sternites 2–6 with pale setulae; sternite 1 bare.
Male genitalia (Figs. 3–4): Epandrial lobe longer than wide, basally rather narrow, apically obtuse. Cercus very large and broad, distinctly wider than epandrial lobe in lateral view, nearly as long as wide in dorsal view; dorsal arm very long and finger-like, ventral arm very short, finger-like. Phallus strongly curved upward, nearly geniculate, apically very thin.
Female. Unknown.
Type material. Holotype male, Hubei, Shennongjia, Guanmenshan, 2009. VII.2, Qifei Liu.
Distribution. China (Hubei).
Etymology. The specific name refers to the elongated dorsal arm of the male cercus.
Remarks. Empis (Planempis) prolongata and the species described below are similar to E. (P.) dahuriensis (Amur Province, Russia) with M1 and M2 incomplete, not reaching the wing margin, but they are easily separated from the latter by the presence of three distinct scutal vittae and entirely black coxae. In E. (P.) dahuriensis, the scutum has two indistinct vittae, and the coxae are yellowish brown at base (Shamshev 2002).
description: Published as part of Wang, Jinjing, Li, Zhu & Yang, Ding, 2010, Two new species of the subgenus Planempis, with a key to the species of China (Diptera: Empidoidea: Empididae), pp. 42-47 in Zootaxa 2453 on pages 43-44, DOI: 10.5281/zenodo.195278