Sinacroneuria aequalis, 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 : 83-85

Sinacroneuria aequalis sp. nov.

urn:lsid:zoobank.org:act:FD95156D-6127-40A3-A146-97B72EAE0E6C

Figs 1–3 , 6 ; Table 1

Diagnosis

Tergum 9 with subrectangular sensilla basiconica patch. Aedeagus mostly membranous, Y-arm and Y-stem subequal in length. Ventral median sclerite long and filiform, fully covered with short spines.

Etymology

The specific name refers to Y-arm and Y-stem being equal in length. The Latin adjective ‘ aequalis ’ means ‘equal’.

Type material

Holotype CHINA • ♂; Fujian Province, Nanping city, Mt Wuyi , Tongmuguan ; 27°45′ N, 117°40′ E; 1150 m a.s.l; 31 May 1990; Lian-Fang Yang and Chang-Hai Sun leg.; HIST.

Description

Male

ADULT HABITUS ( Fig. 1A ). General body color yellowish brown. Body length 20.0 mm; forewing length 17.5 mm; hindwing length 15.6 mm. Triocellate, anterior ocellus smaller. Distance between ocelli almost 2 × diameter of extended ocellus. Head brown with dark brown area covering ocellar triangle, slightly extending laterally; triangular marking forward of M-line brown. Compound eyes black. Antennae generally brown. Pronotum rectangular, with obscure rugosities. Wing membrane transparent, veins brown. Legs brownish. Abdominal segments brownish, terminalia brown.

ABDOMEN ( Fig. 1B–F ). Tergum 9 with posterior margin projecting and medially with subrectangular sensilla basiconica patch. Tergum 10 sensilla basiconica patches triangular and medially completely divided. Paraprocts broad basally, heavily reflexed inward and forward. Hammer present on posterior margin of sternum 9, generally oval-shaped and slightly hexagonal. Hammer convex in lateral view.

AEDEAGUS ( Fig. 2 ). Everted; Aedeagal Y-stem and Y-arm subequal in length.Y-stem laterally compressed. Y-arms horn-like, wide basally and apically tapering, curved outward and upward, set far from each other; basal half of lateral sclerites weakly but apical half heavily sclerotized and band-like. Median sclerite, located on ventral side, brown, long and filiform, fully covered with short spines.

Female

Unknown.

Distribution

China: Fujian Province. Presently only known from Mt Wuyi.

Remarks

Sinacroneuria aequalis sp. nov. shares a similar head pattern and sensilla basiconica patches with S. longwangshana ( Yang & Yang, 1998) (compare Fig. 1A–B with Fig. 3A–B ). However, in S. longwangshana , the aedeagal Y-stem is much shorter than the Y-arms and the basal halves of the lateral sclerites are heavily sclerotized (compare Fig. 2A with Fig. 3C ). This new species also resembles S. lateralis Sivec & Stark, 2020 in having similar sensilla patches of tergum 10 and aedeagal sclerites (compare Figs 1E , 2C with Fig. 3D–E ); however, the aedeagus of S. lateralis lacks a median sclerite (compare Fig. 2C with Fig. 3E ).

Figures

Fig. 1. Sinacroneuria aequalis sp. nov., ♂, holotype (HIST). A. Head and pronotum, dorsal view. B. Terminalia, dorsal view. C. Terminalia, ventral view.D. Terminalia, oblique lateral view.E. Paraproct, caudal view. F. Hammer, lateral view.

Fig. 2. Sinacroneuria aequalis sp. nov., ♂, holotype (HIST). A. Aedeagus, dorsal view. B. Aedeagus, lateral view. C. Aedeagus, caudal view. D. Median sclerite, caudal view.

Fig. 3. A–C. Sinacroneuria longwangshana (Yang & Yang, 1998), ♂, paratype (PLE031). A. Head and pronotum, dorsal view. B. Terminalia, dorsal view. C. Aedeagus, dorsal view. D–E. Sinacroneuria lateralis Sivec & Stark, 2020, ♂, holotype. D. Terminalia, dorsal view. E. Aedeagus, dorsal view. D and E modified from Sivec & Stark (2020), scale bars unavailable from original source.

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