Parosmylus brevicornis, Wang, Yongjie & Liu, Zhiqi, 2009

Wang, Yongjie & Liu, Zhiqi, 2009, Two new species of Parosmylus Needham (Neuroptera, Osmylidae) from China, with a key to Chinese species, Zootaxa 1985, pp. 57-62 : 60-61

Parosmylus brevicornis sp. nov.

( Figs. 2 , 13–17 )

Description. Body length 16.7 mm. Forewing length 31.8 mm, width 11.9 mm; hindwing length 26.7 mm, width 9.6 mm.

Head. Vertex black, ocelli grey, eyes grey brown. Antennae: scape black, flagellum missing. Frons black, labrum dark brown; maxillary and labial palpi fuscous.

Thorax. Prothorax longer than wide, with some long yellow setae laterally. Mesonotum black, prescutum dark brown, the margin with V-shaped brown band. Metanotum fuscous, scutellum dark brown. Legs yellow, with short setae; claws brown, with some small inner teeth.

Wings ( Fig. 2 ). Forewing broad, membrane slightly yellow with numerous dispersed marks. Pterostigma yellow, with dark brown at both ends; nygmata distinctly brown. Veins brown, cross-veins numerous. Costal cross-veins with distal forks. One sc-r cross-vein close to base; r-rs cross-veins numerous, edged with brown marks; 3 presectoral cross-veins. Rs with 15–17 branches; MP fork close to separation of MA from Rs. Crossveins in radial sector arranged irregularly, only forming the regular outer gradate series. Cu forked at the base of wing, Cu2 with many pectinate branches from middle to wing margin, interlinked by small veinlets. A1 and A2 with pectinate branches. Membrane hyaline in hindwing, and with few marks besides pterostigma and nygmata. MP forked at base, and the width between branches slightly greater near middle. Cu2 with pectinate branches as in forewing, but without the interlinking veinlets.

Male ( Figs. 13–17 ). Tergite VIII quadrate; scent glands slender, projected from integument as a short membranous fingerlike sac. Tergite IX narrow, with short dorsal projection; sternite IX slightly concave dorsally. Anal plate small, callus cerci round. Gonarcus with long, acute, dorsal projection at base; a distinct upturned ventral process, with rounded dorsal-lateral process in lateral view. Gonarcus with four distinct processes in dorsal view. Baculum slim, and slightly bent at base. Paremeres evenly curved, the base broad.

Type material. Holotype male. Gansu: Quzhou, Shantan Forest Farm. VII.17.1999, leg. Jian Yao. Paratype. 1 male. Gansu: Wenxian, Qiujiaba. VI.29.2007, leg. Jun Chen.

Distribution. China (Gansu)

Etymology. The name of new speices refers to the short process of tergite IX.

Remarks. This new species is similar to P. tibetanus in appearance of the gonarcus, but differentiated by the stout dorsal process of the ninth tergite.

Figures

FIGURES 1 – 2. Wings. 1. Parosmylus liupanshanesis sp. nov. 2. Parosmylus brevicornis sp. nov.

FIGURES 13 – 17. Parosmylus brevicornis sp. nov. Male. 13. terminalia, lateral view; 14. genitalia, lateral view; 15. parameres, dorsal view; 16. gonarcus, ventral view; 17. gonarcus, dorsal view.