Osmylus lucalatus, Wang & Liu, 2010

Wang, Yongjie & Liu, Zhiqi, 2010, New species of Osmylus Latreille from Henan, China (Neuroptera: Osmylidae), Zootaxa 2363 (1), pp. 60-68 : 64

Osmylus lucalatus sp. nov.

( Figs 2 , 12–17 )

Diagnosis. Wings relatively narrow and with areas of membrane distinctly hyaline with glossy sheen. Veins with irregular pale and dark patterning. Male: 9 th tergite with a stout dorsal projection, ectoproct small. Gonarcus triangular distally and well sclerotized. Female: gonapophysis lateralis finger-like; spermatheca ovoid.

Description. Head. Vertex dark brown, with a bent fuscous stripe on posterior margin. Ocelli and ocellar triangle region yellow. Eyes black. Antenna dark brown, with brown setae, membrane of torulus yellow. Frons brown with a fuscous stripe between antennae. Labrum brown, labial palp and maxillary palp brown. Thorax. Pronotum dark brown, with some yellow spots. Mesonotum taupe and dark brown on both sides, with long brown setae. Metanotum dark brown, with brown setae. Legs yellow, tarsi brown. Wings ( Fig. 2 ). Forewing length 25.1–28.6 mm, width 8.2–9.1 mm. Wings narrow and elongate; coloration of membrane mostly hyaline and reflective; costal space with small brown maculae on margin; r1-rs cross-veins edged with brown, particularly toward R1; remainder of wing irregularly mottled with brown spots; most veins with irregular pale and brown segments; pterostigma light brown, with darker patches; costal veinlets mostly forked near margin except in humeral area; Rs with 11–13 branches; MP deeply forked near division of MA and Rs; hindwing length 23.3–25.2 mm, width 7.2–8.1 mm; coloration of membrane hyaline, nearly immaculate; pterostigma and nygmata brown; costal veinlets with forks more basal compared to forewing. Male terminalia ( Figs 12–15 ). 8 th tergite unmodified; 8 th sternite quadrate; scent glands present as a pair of dark reservoirs, each joined with an eversible membranous evaporative lobe extending distinctly from the tergum; 9 th tergite partially covered by exerted gland, narrow, with a short posteromedial process; 9 th sternite roughly quadrate; ectoproct small, triangular; callus cerci large and oval; gonarcus triangular distally and well sclerotized, with numerous long brown setae; baculum slender in lateral view, articulated with gonarcus; paramere C-shaped in lateral view, base stout, more slender medially, distal end surrounding by hyaline membrane; slender rod joined with paramere by membrane. Female terminalia ( Figs 16–17 ). 8 th tergite trapezoidal; 8 th sternite small and triangular; 9 th tergite narrow, constricted near callus cerci, produced into a stout, conical process ventrolaterally; ectoproct small, approximately rhomboidal; callus cerci large and oval; gonapophysis lateralis slender and elongate, articulated near base with 9 th tergite, apex with a small, articulated stylus; spermatheca simple and ovoid.

Distribution. Presently known only from Henan province, China.

Material examined. Holotype Male. CHINA: Henan (Province): Songxian (county): Baiyunshan (mountain), 1508m. Light trap. 17.VII.2004, leg. Bingzhen Yan. Verbatim label data (translated from Chinese): CHINA: Henan, Songxian, Baiyuanshan/ 17.VII.2004 / 1508m, light trap / Bingzhen Yan / CAU. Condition: Excellent, the left antennae missing and abdomen damaged except for the terminalia. Terminalia cleared in KOH, and stored in the microvial pinned below the specimen.

Paratypes. 3 males (two lacking abdomen), 1 female, same data as holotype .

Etymology. The specific name refers to the highly reflective wing membrane surfaces, which is the compound of Latin luc- (light) and alatus (winged).

Remarks. Most species of Osmylus have a wing that is generally dull or lacking luster. Osmylus lucalatus sp. nov. exhibits some distinct differences from other species such as the high reflective forewings and veins with irregular pale and brown segments. The shape of spermatheca resembles Osmylus taiwanensis New, 1991 , however it can be differentiated by the marks of the forewing and the color of veins. The shape of dorsal process of 9 th tergite resembles Osmylus elegantissimus Kozhantshikov, 1951 , but this new species can be separated by the shape of gonarcus and gonapophysis lateralis in the female (gonarcus of O. elegantissimus with ventral sclerotized process, while the gonarcus in O. lucalatus sp. nov. is without the process; gonapophysis lateralis in O. elegantissimus boat-shape and slightly bent, while it is generally fingerlike and straight in O. lucalatus sp. nov.). We compared the wing figure of O. elegantissimus and the main difference between Osmylus and Parosmylus is the integration of the outer gradate series ( Wang & Liu, 2008). The appearances of gonarcus and gonapophysis lateralis of the female in O. elegantissimus are clearly similar to that found in species of Parosmylus , so we herein transfer P. elegantissimus comb. nov. from Osmylus to Parosmylus .

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 12–17. Osmylus lucalatus sp. nov. 12–15, male. 12, apex of abdomen, lateral; 13, genitalia, lateral; 14, gonarcus, ventral; 15, paramere, lateral. 16–17, female. 16, abdomen terminalia, lateral; 17, spermatheca, lateral.