Pennaticoxita Jiao & Bu, 2016

Jiao, Kelong, Han, Peijin, Wang, Yuanhong & Bu, Wenjun, 2016, General review of the tribe Brachineurini (Diptera: Cecidomyiidae) with description of Pennaticoxita tauricornuta gen. & sp. nov. from China, Zoological Systematics 41 (3), pp. 307-314 : 310-311

Genus Pennaticoxita Jiao & Bu , gen. nov.

Type species: Pennaticoxita tauricornuta Jiao & Bu , sp. nov.

Diagnosis. The new genus Pennaticoxita gen. nov. is characterized by the uniqueness of gonocoxite having a wing-shaped dorsal lobe in the tribe Brachineurini . And Pennaticoxita gen. nov. and Alatostyla Fedotova & Sidorenko are distinguishable from other genera of subtribe Brachineurina subtrib. nov. by vein R 5 joining vein C at wing apex, vein Cu unforked and hypoproct emarginated forming two distinct lobes, but the new genus differs from Alatostyla by gonostylus normally shaped without lobes, while Alatostyla by gonostylus with a sub-conical basal lobe protruding outwardly.

Description. Adult. Palpus with palpiger and 3 segments, last two segments longer than first one ( Fig. 1 ). Antenna with 10 flagellomeres, each with one neck and only one basal node ( Fig. 2 ). Wing ( Fig. 3 ) hyaline, sparsely covered with narrow scales and setose; vein R 1 joining vein C at basal 2/5; vein R 5 bent a little backward, joining vein C at wing apex; vein Cu unforked. Tarsal claw ( Fig. 4 ) toothed on all legs. Male seventh and eighth tergites both reduced to one strongly sclerotized and linear band. Male genitalia ( Figs 5–6 ). Gonocoxite having a wing-shaped dorsal lobe ( Fig. 6 ), and having mediobasal lobe undeveloped, only with several setae inserted in a sub-frustoconical prominence; gonostylus slender and normally shaped; cerci separated to form two broad lobes; hypoproct emarginated forming two digitiform lobes; aedeagus sub-conical, usually with a pair of horn-shaped prominences or other modifications. Female genitalia unknown.

Etymology. The genus name means the male gonocoxite having a wing-shaped dorsal lobe.

Figures

Figures 1–4. Pennaticoxita tauricornuta gen. & sp. nov., male. 1. Palpus, lateral view. 2. Third flagellomere, dorsal view. 3. Wing, dorsal view. 4. Fore acropod, lateral view. Scale bars: 1–2, 4=20μm; 3 =200μm.

Figures 5–6. Pennaticoxita tauricornuta gen. & sp. nov., male. 5. Genitalia, ventral view, one gonopod, cerci and hypoproct removed. 6. Genitalia, dorsal view, one gonopod removed. Scale bars=50μm.