Osmylus pachycaudatus, Wang & Liu, 2010

Wang, Yongjie & Liu, Zhiqi, 2010, New species of Osmylus Latreille from Henan, China (Neuroptera: Osmylidae), Zootaxa 2363 (1), pp. 60-68 : 66-67

Osmylus pachycaudatus sp. nov.

( Figs 4 , 22–26 )

Diagnosis. Wing hyaline, veins tan. Male: 9 th tergite with a long stout dorsal projection. Gonarcus protruding as cone-shape distally; a distinct ventral process, base slightly sclerotized. Paramere arcuate, fused at base.

Description. Head. Vertex ochreous. Ocelli yellowish; ocellar triangle black. Eye slightly grey. Antenna dark brown; antennal socket membrane yellowish. Frons ochreous, black stipe connecting with antennal base. Labrum brown, black at base. Labial palp and maxillary palp brown. Thorax. Pronotum with a yellowish spot posteriorly. Meso- and metanotum with long, yellow setae. Legs yellow with long brown setae. Wings ( Fig. 4 ). Forewing length 29.8 mm, width 9.2 mm. Wing broad, membrane hyaline, some diffuse tan spots along margin; pterostigma brown, with yellow patches; nygmata brown; veins tan; Rs with 16 branches; MP fork present between the separation of MA from Rs and the first branch of Rs; branches CuP of and A1 interlinked by some veinlets. Hindwing length 27.4 mm, width 7.8 mm; membrane hyaline; pterostigma and nygmata brown. Male terminalia ( Figs 22–26 ). 8 th tergite relatively broad; 8 th sternite quadrate; scent gland with dark reservoirs and membranous evaporative lobe not extend out of the tergum [in preserved specimen]; 9 th tergite narrow with a distinct stout dorsal projection, bent posteriorly; 9 th sternite quadrate; ectoproct small and papillary, callus cerci large and round; distal part of gonarcus well-sclerotized in lateral view, two pairs of processes in ventral view; baculum slender and bent at base, articulate with the gonarcus; paramere arcuate, fused at base, margin well-sclerotized and the remainder membranous.

Material examined. Holotype Male. CHINA: Henan (Province): Luanchuan (county), Longyuwan (Forest Park), 1015m. Light trap. 19.VII.2004, leg. Bingzhen Yan. Verbatim label data (translated from Chinese): CHINA: Henan, Longchuan, Longyuwan/ 19.VII.2004 / 1015m, light trap / Bingzhen Yan / CAU. Condition: Excellent. Terminalia cleared in KOH, and stored in the microvial pinned below the specimen.

Etymology. The specific name refers to the long stout fingerlike dorsal projection of the 9 th tergum, which is the compound of the Latin pachy - (thick) and caudatus (tailed).

Remarks. The new species show some distinctive autapomorphic characters such as the large paired processes on 9 th tergite and arcuate parameres.

Figures

FIGURES 1–4. Wings of new Osmylus species. 1. Osmylus biangulus sp. nov. 2. Osmylus lucalatus sp. nov. 3. Osmylus bipapillatus sp. nov. 4. Osmylus pachycaudatus sp. nov.

FIGURES 22–26. Osmylus pachycaudatus sp. nov. Male. 22, apex of abdomen, lateral; 23, genitalia, lateral; 24, gonarcus, ventral; 25, paramere, lateral; 26, paramere, ventral.