Prosciara angusta 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 : 309

Prosciara angusta Shi & Huang , sp. nov.

( Figs. 4 , 24 )

Specimens examined. Holotype, male. China, Zhejiang province, Lishui, Fengyangshan, plant nursery, malaise trap, 24.VIII.2007, Sheng-Long Liu [SM00281].

Description (Male). Color. Head dark brown; antenna, thorax, abdomen and hypopygium yellowish-brown, the mesonotum brown; palpus and legs yellow; wing fumose. Head. Eye bridge with 3 rows of facets. Prefrons with 11 setae. Clypeus with 4 setae. Basal segment of palpus with 2 setae; 2nd segment with 8 setae; 3rd segment with 15 setae. Length/width of 4th flagellomere: 3.23 ( Fig. 4 C). Thorax. Anterior pronotum with 8 setae, episternum 1 with 10 setae. Wings. Wing length 2.98 mm, width/length: 0.39. c/w: 0.56. R1/R: 0.97. r-m with 2 setae, stM with a few setae, M1 and M2 with numerous setae, Cu1 with numerous setae and Cu2 bare. Legs. Foretibia with a comb of 8 setae ( Fig. 4 D). Length of spur/width of foretibia 1.84. Length of femur/length of metatarsus: foreleg 0.95. Length of metatarsus/length of tibia: foreleg 0.72, hind leg 0.52. Length of hind tibia/ length of thorax 1.92. Foretibia with 0 dorsal, 0 ventral, 2 prolateral and 2 retrolateral spinose setae. Midtibia without dorsal spinose setae. Hypopygium ( Fig. 4 A, B). Sternite 10 with 1 seta on each half.

Distribution. China (Zhejiang, Fig. 24 ).

Remarks. By its wing length, setose M and Cu1, and subapically located dorsal lobe with four megasetae, the new species resembles P. latilingula Hippa & Vilkamaa, 1991 , P. ungulata (Winnertz, 1867) and P. producta (Tuomikoski, 1960) . But the former two species differ from the latter two species in slightly larger body size. Moreover, P. angusta differs from P. latilingula by having a much slender 4th flagellomere, a narrower gonostylus, a narrower tegmen, and a sharper intercoxal lobe on the hypopygium.

Etymology. This species is named after its narrow gonostylus, from the Latin adjective angustus, meaning narrow.

Figures

FIGURE 4. Prosciara angusta Shi & Huang, sp. nov., male, holotype. A, part of hypopygium, ventral view; A- 1: intercoxal lobe on hypopygium; B, right gonostylus, ventral view; C, 4 th flagellomere, lateral view; D, apex of foretibia, prolateral view. Scale 0.10 mm.

FIGURE 24. Geographical distribution of Prosciara from China.