Prosciara tetracantha 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 : 334

Prosciara tetracantha Shi & Huang , sp. nov.

( Figs. 20 , 24 )

Specimens examined. Holotype, male. Sichuan province, Labahe, sweep-net, 1200 m, 16.VII.2006, Xiao-Ling Niu [SM01154].

Description (Male).Color. Head dark brown; antenna, palpus, hypopygium brown; thorax and abdomen yellowish-brown, the mesonotum dark brown; and legs yellow; wing fumose. Head ( Fig. 20 C, D). Eye bridge with 3 rows of facets. Prefrons with 18 setae. Clypeus with 9 setae. Basal segment of palpus with 6 setae; 2nd segment with 14 setae; 3rd segment with 14 setae. Length/width of 4th flagellomere: 1.94. Thorax. Anterior pronotum with 7 setae, episternum 1 with 11 setae. Wings. Wing length 3.62 mm, width/length: 0.34. c/w: 0.47. R1/R: 1.16. r-m with 6 setae, stM bare, M1 and M2 bare, Cu1 and Cu2 bare. Legs. Foretibia with a comb of 9 setae ( Fig. 20 E). Length of spur/width of foretibia 1.56. Length of femur/length of metatarsus: foreleg 1.05. Length of metatarsus/ length of tibia: foreleg 0.75, hind leg 0.51. Length of hind tibia/length of thorax 1.56. Foretibia with 0 dorsal, 4 ventral, 2 prolateral and 4 retrolateral spinose setae. Midtibia without dorsal spinose setae. Hypopygium ( Fig. 20 A, B). Sternite 10 with 2 setae on each half.

Distribution. China (Sichuan, Fig. 24 ).

Remarks. By the form of the hypopygium, the new species is closely related with P. s i n e n s i s ( Fig. 19 ). For their differential diagnosis, see under P. s i ne n s is.

Etymology. This species is named after its four megasetae on the dorsal lobe on the gonostylus, from the Latin adjective tetracanthus, meaning four megasetae.

Figures

FIGURE 19. Prosciara sinensis Shi & Huang, sp. nov., male, holotype. A, left gonostylus, ventral view; B, part of hypopygium, ventral view; B- 1, lateral membraneous prominence; C, palpus, lateral view; D, 4 th flagellomere, lateral view; E, apex of foretibia, prolateral view. Scale 0.10 mm.

FIGURE 20. Prosciara tetracantha Shi & Huang, sp. nov., male, holotype. A, part of hypopygium, ventral view; B, right gonostylus, 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.