Scaptodrosophila longiciliata, 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 : 178-179

Scaptodrosophila longiciliata sp. nov.

( Figs 3D–F , 9 )

Diagnosis. This species resembles S. fuscilimba Liu & Chen, 2018 in some characters of body colour patterns and shape of hypandrium, but can be distinguished from it by surstylus fused to epandrium ( Fig. 9A, B ); pregonite expanded, longer than hypandrium ( Fig. 9C, D ). This species exhibits the closest genetic affinity to S. longispinata in light of divergence in COI barcodes ( Table 2 ).

Description. Head ( Fig. 3D ): Frons brown. Pedicel dark brown. First flagellomere yellowish brown. Facial carina brown, 1/4 the length of face.

Thorax ( Fig. 3E, F ): Mesonotum yellowish brown. Scutellum yellowish brown. Pleura yellowish brown.

Abdomen ( Fig. 3E, F ): Tergites II to V yellowish brown with hazel caudal bands.

Male terminalia ( Fig. 9 ): Epandrium with ca. 10 epandrial bristles near posterior and ventral margins per side. Surstylus with 10 peg-like surstylar teeth on caudal margins ( Fig. 9A, B ). Hypandrium with a pair of paramedian hypandrial bristle. Pregonite with 2 sensilla medially. Phallus lacking pubescence ( Fig. 9C, D ).

Measurements. BL = 2.23 mm in holotype (mm in 6♂ paratypes: 1.91–2.31), ThL = 1.00 mm (0.80–0.98), WL = 2.29 mm (1.78–2.16), WW = 0.90 mm (0.80–0.91), arb = 3/2 (3/2), avd = 0.82 (0.86–1.14), adf = 2.00 (1.40–2.20), flw = 2.78 (1.59–2.59), FW/HW = 0.38 (0.29–0.39), ch/o = 0.17 (0.17–0.19), prorb = 0.87 (0.62–0.88), rcorb = 0.77 (0.31–0.95), vb = 0.71 (0.46–1.00), dcl = 0.55 (0.56–0.90), presctl = 0.39 (0.33–0.45), sctl = 1.07 (0.77–1.13), sterno = 0.91 (0.57–0.80), orbito = 0.67 (0.50–0.60), dcp = 0.55 (0.38–0.46), sctlp = 0.61 (0.44–0.75), C = 2.31 (2.47–3.14), 4c = 1.33 (1.00–1.31), 4v = 2.65 (2.25–2.82), 5x = 2.08 (1.50–2.80), ac = 2.80 (2.18–2.83), M = 0.90 (0.50–1.27), C3F = 0.65 (0.60–0.75).

Materials examined. Holotype ♂ ( SCAU, No. 125109), CHINA: Botanic Garden, Ruili , Yunnan, 24°01'N, 97°51'E, alt. 1154m, 22.iv.2018, HW Chen . Paratypes: CHINA: 4♂ ( SCAU, Nos. 125110, 125116, 125117), Botanic Garden, Ruili , Yunnan, 24°01'N, 97°51'E, alt. 1154m, 22.iv.2018, HW Chen, L Gong, Y Lin ; 1♂ ( SCAU, No. 125114), Guanlei, Mengla , Yunnan, 21°38'N, 101°10'E, alt. 621m, 21.iv.2016, J Huang ; 1♂ ( SCAU, No. 125115), Mengdong, Cangyuan , Yunnan, 23°10'N, 99°13'E, alt. 1323m, 6.v.2016, YQ Liu ; 1♂ ( SCAU, No. 125111), Qimaba, Lüchun , Yunnan, 22°48'N, 102°14'E, alt. 1280m, 3.viii.2016, HW Chen .

Distribution. China (Yunnan).

Etymology. A combination of the Latin words “ longus ” + “ cilium ”, referring to the length of pregonite.

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 9. Scaptodrosophila longiciliata 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.