Prosciara columellata 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 : 320

Prosciara columellata Shi & Huang , sp. nov.

( Figs. 10 , 24 )

Specimens examined. Holotype, male. China, Yunnan province, Yingjiang, Tongbiguan, 1513 m, light trap, 24°37.667ʹN, 97°37.893ʹE, 16.V.2009, Su-Jiong Zhang [SM00845].

Description (Male). Color. The head is bleached, pale brown; abdomen yellowish-brown; antenna, palpus, thorax, hypopygium and legs yellow; wing fumose. Head ( Fig. 10 C, D). Eye bridge with 3 rows of facets. Prefrons with 20 setae. Clypeus with 3 setae. Basal segment of palpus with 6 setae; 2nd segment with 6 setae; 3rd segment with 9 setae. Length/width of 4th flagellomere: 3.72. Thorax. Anterior pronotum with 3 setae, episternum 1 with 6 setae. Wings. Wing length 2.25 mm, width/length: 0.38. c/w: 0.66. R1/R: 0.95. r-m bare, stM with 1 seta, M1 and M2 with numerous setae, Cu1 and Cu2 with numerous setae. Legs. Foretibia with a comb of 7–8 setae ( Fig. 10 E). Length of spur/width of foretibia 1.85. Length of femur/length of metatarsus: foreleg 1.02. Length of metatarsus/ length of tibia: foreleg 0.66, hind leg 0.55. Length of hind tibia/length of thorax 1.78. Foretibia with 0 dorsal, 1 ventral, 2 prolateral and 4 retrolateral spinose setae. Midtibia without dorsal spinose setae. Hypopygium ( Fig. 10 A, B). Sternite 10 with 1 seta on each half.

Distribution. China (Yunnan, Fig. 24 ).

Remarks. By its setose M and Cu, slightly elongated necks and setae on the flagellomeres and the form of the gonostylus, the new species is most similar to P. crassidens Hippa & Vilkamaa, 1991 . However, they may be distinguished by three longer megasetae on the dorsal lobe on a parallel-sided gonostylus in P. columellata , while more than three megesetae on a slightly inflated gonostylus in P. crassidens .

Etymology. This species is named after its parallel-sided gonostylus, which looks like a pillar, from the Latin adjective columellatus, meaning pillar.

Figures

FIGURE 10. Prosciara columellata 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.