Sinacroneuria transversa, Liu & Cao & Li, 2025

Liu, Rui-Jun, Cao, Zhi-Shan & Li, Wei-Hai, 2025, Two new species of Sinacroneuria Yang & Yang, 1995, European Journal of Taxonomy 1004, pp. 81-91 : 86-88

Sinacroneuria transversa sp. nov.

urn:lsid:zoobank.org:act:58ACDAF9-8781-47E9-885D-0BA4C177857A

Figs 4–6 ; Table 1

Diagnosis

Tergum 9 with a transverse sensilla basiconica patch covering the entire width of the segment. Aedeagus mostly membranous. The everted aedeagus with straight aedeagal arms. Median sclerite crescent.

Etymology

The specific name refers to the transverse patch of sensilla basiconica on tergum 9. The Latin adjective ‘ transversa’ means ‘transverse’.

Type material

Holotype CHINA • ♂; Fujian Province, Mt Wuyi , Kekao station ; 27°44.57′ N, 117°40.45′ E; 735 m a.s.l; 12 July 2009; Li Shi, Xiao-Yan Liu leg.; light trap; CAU.

Paratype

CHINA – Zhejiang Province • 1 ♂; Lishui city, Mt Fengyang ; 27°55′ N, 119°13′ E; 1178 m a.s.l; 30 July 2007; Jing-Xian Liu leg.; HIST .

Description

Male

ADULT HABITUS ( Fig. 4A ). General body color yellow brownish. Body length 16.5 mm; forewing length 14.3 mm, hindwing length 12.8 mm. Triocellate, anterior ocellus smaller, distance between posterior ocelli almost equal to width the ocellus. Head with brown area covering ocellar triangle, slightly extending laterally under pale M-line and with V-shaped brown marking forward of M-line. Compound eyes black. Antennae brown, flagellum distally brownish. Pronotum brownish and subrectangular, with obscure rugosities. Legs brownish. Wing membrane transparent, veins brown. Abdominal segments brownish to brown, cerci brown.

ABDOMEN ( Fig. 4B–F ). Tergum 9 with transverse sensilla basiconica patch nearly covering the entire width of segment. Sensilla basiconica patch of tergum 10 small, widely divided medially. Paraprocts hook-like and heavily sclerotized, tips sharp and more slender in caudal view. Hammer oval and set near posterior margin of sternum 9. Hammer slightly projecting in lateral view.

AEDEAGUS ( Fig. 5 ). Everted aedeagus with Y-arms about 3× as long as Y–stem, and with a pair of adjacent lateral sclerites of same origin as arms. Y-arms basally straight and narrowly separated, with distal third abruptly outcurved to form horn-like structure, with subapical notch. In ventral view, median sclerite brown, generally crescent.

Female

Unknown.

Distribution

China: Fujian and Zhejiang provinces.

Remarks

The new species seems unique among all known species in having a wide transverse sensilla basiconica patch of tergum 9 which nearly covers the entire width of the segment. It is also characterized by a roughly straight aedeagal arms for the most of their length with a mesodorsal notch at outcurved apex ( Fig. 4 ).

Figures

Fig. 4. Sinacroneuria transversa sp. nov., ♂, holotype (CAU). A. Head and pronotum, dorsal view. B. Terminalia, dorsal view. C. Terminalia, ventral view. D. Paraproct, oblique lateral view. E. Paraproct, caudal view. F. Hammer, lateral view.

Fig. 5. Sinacroneuria transversa sp. nov., ♂, holotype (CAU). A. Aedeagus, dorsal view. B. Aedeagus, ventral view. C. Aedeagus, lateral view.

Fig. 6. Distribution of the species of Sinacroneuria Yang & Yang, 1995 known from China. City records are shaded in grey.