Osmylus maoershanicola, Xu, Han, Wang, Yongjie & Liu, Zhiqi, 2016

Xu, Han, Wang, Yongjie & Liu, Zhiqi, 2016, Three new species of Osmylus Latreille from China (Neuroptera, Osmylidae), ZooKeys 589, pp. 107-121 : 113-114

Taxon classification Animalia Neuroptera Osmylidae

Osmylus maoershanicola sp. n. Figs 4, 5

Material examined.

Holotype Male, CHINA: Guangxi (Province): Maoershan (Nature Reserve), [25°48'N, 110°24'E], 9.viii.2005, leg. Ping Zhao. Verbatim label data (translated from Chinese): CHINA: Guangxi Prov., Maoershan/ 9.viii.2005/ Ping Zhao/ CAU. Condition: Antennal flagellum missing. Abdomen terminalia cleared in KOH, and stored in the micro-vial pinned below the specimen. Paratype. 1 female (left antenna damaged), same data as holotype (CAU).

Diagnosis.

Male: 9th tergite with a short finger-like dorsal process; ectoproct cone-shaped. Gonarcus distally triangular with a ventral, triangular, membranous protuberance in lateral view. Female: gonapophysis lateralis approximately fusiform; spermatheca oval.

Description.

Head. Vertex yellowish-brown with brown setae; eye dark gray, ocelli yellow, area within ocelli black. Antennal flagellum missing, scape and pedicel dark brown; frons yellow. Thorax. Pronotum dark brown, posterior margin slightly wider, with black brown setae; meso- and metanotum black with brown setae. Legs yellow with brown setae; pretarsal claws dark brown.

Wing (Fig. 4). Forewing length 27-28 mm, width 9-10 mm. Membrane hyaline, with many sparse, fuscous spots; pterostigma brown; nygmata light brown; veins dark brown; Rs with 13-14 branches, outer gradate cross-veins edged with fuscous stains; R1-Rs cross-veins edged with brown marks; short cross-veins are present among the branches of CuP. Hindwing length 23-24 mm, width 7-8 mm. Membrane hyaline; pterostigma light yellow.

Male terminalia (Fig. 5 a–e). Scent glands slender. 9th tergite long and narrow with a short, dorsal finger-like process (Fig. 5a), ventral margin slightly tapered. 9th sternite trapezoidal in lateral view. Ectoproct triangular in lateral view, callus cerci round. Distal part of gonarcus well sclerotized and approximately triangular, ventral part membranous with a triangular protuberance in lateral view (Fig. 5b); anterior arm of gonarcus slender; mediuncus dilated basally with a sharp backward end, slender apically and coated by a membrane in lateral view; rod-shaped paramere beneath the mediuncus slightly bent in lateral view, posterior end sharp.

Female terminalia (Fig. 5 f–g). 8th sternite approximately trapezoidal; 9th tergite long and narrow with a ventral hemispherical tubercle in lateral view; ectoproct triangular in lateral view, callus cerci round, presenting in middle; gonapophysis lateralis approximately fusiform, stylus cylindrical; spermatheca simple, approximately spherical.

Distribution.

Presently known only from Guangxi Province, China.

Etymology.

The specific name ‘maoershanicola’ refers to 'Maoershan Mountain’, the type locality.

Remarks.

The dorsal finger-like process of 9th tergite of Osmylus maoershanicola sp. n. is similar to Osmylus pryeri and Osmylus biangulus , but this new species can be identified by the distinctive shape of the gonarcus. There are two prominent ventral protuberances in the distal part of gonarcus of Osmylus pryeri and Osmylus biangulus (Fig. 3b) but only one in Osmylus maoershanicola sp. n. (Fig. 5b). Furthermore, the distal gonarcus is cone-shaped in Osmylus biangulus but triangular in Osmylus maoershanicola and the spermatheca is short and bent rod-like in Osmylus biangulus (Fig. 2e) but approximately spherical in Osmylus maoershanicola (Fig. 5g).