Prosciara euryacantha 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 : 309-312

Prosciara euryacantha Shi & Huang , sp. nov.

( Figs. 5 , 24 )

Specimens examined. Holotype, male. China, Guangxi province, Nanning, Mt. Damingshan, sweep-net, 25.V.2011, Ting-Ting Zhang [SM01121].

Description (Male). Color. Head dark brown; antenna, thorax, abdomen and hypopygium yellowish-brown, the mesonotum brown; palpus and legs yellow; wing fumose. Head ( Fig. 5 C, D). Eye bridge with 3 rows of facets. Head in poor condition in the specimen studied, prefrons and clypeus not well seen. Basal segment of palpus with 2 setae; 2nd segment with 8 setae; 3rd segment with 9 setae. Length/width of 4th flagellomere: 1.53. Thorax. Anterior pronotum with 3 setae, episternum 1 with 5 setae. Wings. Wing length 1.94 mm, width/length: 0.39. c/w: 0.51. R1/R: 1.04. r-m with 2 setae, stM with 1 seta, M1 and M2 with numerous setae, Cu1 with numerous setae and Cu2 bare. Legs. Foretibia with a comb of 8 setae. Length of spur/width of foretibia 1.67. Length of femur/length of metatarsus: foreleg 1.13. Length of metatarsus/length of tibia: foreleg 0.66, hind leg 0.49. Length of hind tibia/ length of thorax 1.66. Foretibia with 0 dorsal, 0 ventral, 2 prolateral and 2 retrolateral spinose setae. Midtibia without dorsal spinose setae. Hypopygium ( Fig. 5 A, B). Sternite 10 with 1 seta on each half.

Distribution. China (Guangxi, Fig. 24 ).

Remarks. By its setose M and Cu1, subapically located dorsal lobe on the gonostylus, the arrangement of the megasetae on the dorsal lobe and the shape of the intercoxal lobe on the hypopygium, the new species resembles P. ligulifera Vilkamaa & Hippa, 1996 . But it differs from P. ligulifer a by its robust 4th flagellomere, shorter wings and wider dorsal lobe on an inflated gonostylus.

Etymology. This species is named after its thick megasetae on the dorsal lobe on the gonostylus, from the Latin adjective euryacanthus, meaning wide megasetae.

Figures

FIGURE 5. Prosciara euryacantha Shi & Huang, sp. nov., male, holotype. A, part of hypopygium, ventral view; A- 1: intercoxal lobe on hypopygium; B, left gonostylus, ventral view; C, palpus, lateral view; D, 4 th flagellomere, lateral view. Scale 0.10 mm.

FIGURE 24. Geographical distribution of Prosciara from China.