Sinops sichuanensis, Zhang, Junhua, Yang, Ding & Mathis, Wayne N., 2005

Zhang, Junhua, Yang, Ding & Mathis, Wayne N., 2005, A new genus and species of Ephydridae (Diptera) from the Oriental Region, Zootaxa 1040, pp. 31-43 : 35-37

Sinops sichuanensis sp. nov. ( Figs. 1–15 )

Diagnosis. Two pairs of strong lateroclinate orb; 3–4 long facial setae. Three pairs of posts dc, without pres dc; acr weak and short, continuing in a posts row to base of scutellum; 1 strong presutural seta; posterior npl much farther from notopleural suture than anterior npl; 1 strong sa, psa absent; two pairs of sc. Forefemur with row of pv, mid femur with row of av. Male genitalia: Epandrium base as wide as apex in posterior view; cerci long, thickened at base and slender at apex. Gonite falcate at base in lateral view. Female genitalia: Cerci flatiron­shaped in lateral view, yellow at base and yellow at apex. Sternite 8 divided into 2 triangular sclerites.

Description. Male body length 2.2–2.4 mm, wing length 2.5–2.7 mm.

Head ( Figs. 1, 3 ). Generally black, subshiny; anterior frons with transverse dent. Setulae and setae of head black. 1 lateral vertical seta as long as 1 medial vertical seta; 1 pair of strong ocellar setae; 4 lateroclinate orb, 1st and 3rd setae thin and short. Slightly projecting face black with greenish blue dense microtomentum, with 3 long facial setae as strong as oral setae on each side. Gena with 1 very strong seta. Antenna black; arista short pubescent.

Thorax ( Figs. 2, 4 ). Subshiny black; mesonotum with thin gray microtomentum. Thoracic setulae and setae black. Three pairs of postsutural dc, posteriormost dc just lateral to dorsocentral line and just anterior to scutellum; pres dc absent; acr weak and short, continuing in a posts row to base of scutellum; 1 strong presutural seta; 2 npl, posterior npl much farther from notopleural suture than anterior npl; katepisternal seta weaker than anepisternal seta; 1 strong sa, psa absent; scutellum with two pairs of sc, apical sc about two times as long as lateral sc; anepisternum with 1 long seta; katepisternum with 1 strong seta on dorsal portion. Legs black, subshiny with gray microtomentum; tarsi brown. Setulae and setae on legs black. Forefemur ( Fig. 6 ) with row of pv shorter than width of forefemur, midfemur ( Fig. 7 ) with row of av. Pulvilli well developed; tarsal claws short, and distinctly curved. Wing ( Fig. 5 ) brownish yellow, without spots; C extended to apex of M. Halter yellowish.

Abdomen subshiny black. Abdominal setulae and setae black.

Male genitalia ( Figs. 9–12 ). Epandrium large and broad, parallel­sided in posterior view; cerci long, thickened at base and slender at apex; anterior gonite falcate at apex, posterior gonite with dentate margin at apex in lateral view.

Female. Body length 2.6–2.7 mm, wing length 2.7–2.8 mm. Female genitalia ( Figs. 13–15 ). Cerci subtrapezoidal in lateral view, brownish yellow at base and yellow at apex. Sternite 8 divided into 2 triangular sclerites.

Specimens examined. Holotype ɗ, Sichuan: Emeishan Mountain, 16. VIII. 1998, leg. Ding Yang (CAU). Paratypes 3ɗɗ, 3ΨΨ, same data as holotype (CAU & USNM).

Distribution. China (Sichuan).

Etymology. The specific name refers to Sichuan, a province in south­central China.

Figures

FIGURES 1 – 4. Sinops sichuanensis sp. nov. (male). 1. Head in lateral view; 2. head in anterior view; 3. thorax in lateral view; 4. thorax in dorsal view.

FIGURES 5 – 8. Sinops sichuanensis sp. nov. (male). 5. Wing; 6. foreleg; 7. midleg; 8. hindleg.

FIGURES 9 – 12. Sinops sichuanensis sp. nov. (male). 9. Epandrium in posterior view; 10. genitalia in internal view; 11. genitalia in lateral view; 12. epandrium in lateral view.

FIGURES 13 – 15. Sinops sichuanensis sp. nov. (female). 13. 5 – 8 sternites; 14. cerci in lateral view; 15. cerci in posterior view.