Prosciara globoidea Shi & Huang

Shi, Kai, Huang, Junhao, Komarova, Lyudmila, Zhang, Sujiong & Wu, Hong, 2013, Review of the genus Prosciara Frey (Diptera, Sciaridae) from China, Zootaxa 3640 (3), pp. 301-342 : 331

Prosciara globoidea Shi & Huang , sp. nov.

( Figs. 17 , 24 )

Specimens examined. Holotype, male. China, Sichuan province, Labahe, 1200 m, sweep-net, 16.VII.2006, Jian Cao [SM01140]. Paratype, 1 male, the same data as holotype, but Xiao-Ling Niu [SM01141].

Description (Male). Color. The head brown; antenna, thorax, abdomen and hypopygium yellowish-brown; palpus and legs yellow; wing fumose. Head ( Fig. 17 C, D). Eye bridge with 3 rows of facets. Prefrons with 14 setae. Clypeus bare. Basal segment of palpus with 1–2 setae and a sensory pit; 2nd segment with 8–9 setae; 3rd segment with 7–8 setae. Length/width of 4th flagellomere: 3.15–3.81. Thorax. Anterior pronotum with 4–6 setae, episternum 1 with 3 setae. Wings. Wing length 1.95–2.27 mm, width/length: 0.34–0.39. c/w: 0.61–0.66. R1/R: 0.56–0.63. r-m, stM, M1 and M2 bare, Cu1 and Cu2 bare. Legs. Foretibia with a comb of 6 setae ( Fig. 17 E). Length of spur/width of foretibia 1.72–1.79. Length of femur/length of metatarsus: foreleg 1.10–1.13. Length of metatarsus/length of tibia: foreleg 0.64–0.68, hind leg 0.52–0.53. Length of hind tibia/length of thorax 1.30–1.62. Foretibia with 0 dorsal, 5–7 ventral, 2 prolateral and 2–4 retrolateral spinose setae. Midtibia without dorsal spinose setae. Hypopygium ( Fig. 17 A, B). Sternite 10 with 1 seta on each half.

Distribution. China (Sichuan, Fig. 24 ).

Remarks. By its bare M and Cu wing veins, a greatly inflated gonostylus and an apically located dorsal lobe, the new species is similar to P. prosciaroides (Tuomikoski, 1960) . However, the two species may be distinguished by a sensory pit on the basal segment of the palpus, an globally inflated gonostylus, six megasetae on the dorsal lobe, bare ventral membraneous area between the gonocoxites, and a medially narrowed tegmen in P. globoidea ; no sensory pit on the basal segment of the palpus, a fairly inflated gonostylus, five megasetae on the dorsal lobe, setose ventral membraneous area between the gonocoxites, and a tegmen evenly broadened from apex to base in P. prosciaroides . For discussion about the sensory pit, see under P. ternidigitata .

Etymology. This species is named after its spherically inflated gonostylus, from the Latin adjective globoideus, meaning spherical.

Figures

FIGURE 17. Prosciara globoidea Shi & Huang, sp. nov., male, holotype. A, left gonostylus, ventral view; B, part of hypopygium, ventral view; C, palpus, lateral view; D, 4 th flagellomere, lateral view; E, apex of foretibia, prolateral view. Scale 0.10 mm.

FIGURE 24. Geographical distribution of Prosciara from China.