Scaptodrosophila latifoliacea, Peng & Lin & Chen, 2022

Peng, Hongen, Lin, Yong & Chen, Hongwei, 2022, Morphological and molecular evidence of eight new species of the genus Scaptodrosophila Duda (Diptera, Drosophilidae) from China, Zootaxa 5093 (2), pp. 169-194 : 177

Scaptodrosophila latifoliacea sp. nov.

( Figs 3A–C , 8 )

Diagnosis. This species resembles S. nigrolimbata Liu & Chen, 2018 in the pattern on the abdomen tergites, but can be distinguished from it by surstylus broadened dorsally ( Fig. 8A, B ); hypandrium inverted-triangle-shaped in ventral view, with a membrane medially in lateral view; pregonite with pubescence basally ( Fig. 8C, D ). This species exhibits the closest genetic affinity to S. curvata in light of divergence in COI barcodes ( Table 2 ).

Description. Head ( Fig. 3A ): Frons yellowish brown. Pedicel yellowish brown. First flagellomere grayish. Facial carina hazel, short, 1/3 the length of face.

Thorax ( Fig. 3B, C ): Mesonotum yellowish brown. Scutellum hazel. Pleura yellowish brown.

Abdomen ( Fig. 3B, C ): Tergites II to V yellow with black caudal bands, the caudal bands on tergites II to V interrupted medially.

Male terminalia ( Fig. 8 ): Epandrium with ca. 14 epandrial bristles near posterior and ventral margins per side. Surstylus with 15 peg-like surstylar teeth on caudal margins ( Fig. 8A, B ). Hypandrium with a pair of paramedian hypandrial bristle. Pregonite with 3 sensilla medially. Phallus lacking pubescence ( Fig. 8C, D ).

Measurements. BL = 2.58 mm in holotype, ThL = 1.11 mm, WL = 2.44 mm, WW = 1.02 mm, arb = 3/2, avd = 0.61, adf = 2.10, flw = 2.16, FW/HW = 0.37, ch/o = 0.11, prorb = 0.63, rcorb = 0.24, vb = 1.16, dcl = 0.57, presctl = 0.39, sctl = 0.94, sterno = 0.47, orbito = 0.44, dcp = 0.30, sctlp = 0.99, C = 2.33, 4c = 0.94, 4v = 2.00, 5x = 1.17, ac = 1.50, M = 0.44, C3F = 0.87.

Materials examined. Holotype ♂ ( SCAU, No. 125108), CHINA: Guanlei, Mengla , Yunnan, 21°38'N, 101°10'E, alt. 621m, 21.iv.2016, J Huang.

Distribution. China (Yunnan).

Etymology. A combination of the Latin words: “ latilus ” + “ foliaceus ”, referring to the surstylus broadened dorsally.

Figures

FIGURE 3. External morphology.A–C. Scaptodrosophila latifoliacea sp. nov. A. head, anterior view; B. habitus, dorsal view; C. habitus, lateral view. D–F. S. longiciliata sp. nov. D. head, anterior view; E. habitus, dorsal view; F. habitus, lateral view. Scale bars = 0.5 mm.

FIGURE 8. Scaptodrosophila latifoliacea sp. nov., male terminalia: A, B. Epandrium, surstylus and cercus (posterior and lateral views); C, D. Hypandrium, phallus, phallapodeme, pregonite and postgonite (ventral and lateral views). Scale bars = 0.1 mm.