Impatiophila curvivalva Fu & Gao

Fu, Zhao, Toda, Masanori J., Li, Nan-Nan, Zhang, Ya-Ping & Gao, Jian-Jun, 2016, A new genus of anthophilous drosophilids, Impatiophila (Diptera, Drosophilidae): morphology, DNA barcoding and molecular phylogeny, with descriptions of thirty-nine new species, Zootaxa 4120 (1), pp. 1-100 : 67-68

31) Impatiophila curvivalva Fu & Gao , sp. nov.

( Fig. 37 ; Pl. 4B; Pl. 7D)

Diagnosis. Abdominal tergites II‒VI with broad, black, caudal bands broadened laterally, medially widely interrupted or constricted on II −V (Pl. 4B). Hindleg tarsomere I with 1 black, apically blunt, stout spine at outer apex on underside. Tenth sternite slightly broader than long, dorsally dilated, with U-shaped notch medially on dorsal margin ( Fig. 37 D).

Description (♂, ♀). Head: Cibarium with 2−3 medial and 7 posterior sensilla per side. Labellum with 5−6 pseudotracheae per side.

Thorax (Pl. 4B): Postpronotum yellowish brown; scutum black anteriorly, blackish brown posteriorly, pale brown along notopleural line and lines connecting anterior and posterior, dorsocentral setae; scutellum blackish brown, marginally pale brown; pleura yellowish brown to blackish brown.

Wing (Pl. 4B) hyaline; veins yellowish brown. C1 setae 2, subequal. Haltere knob yellow; stem grayish yellow.

Legs (Pl. 4B) yellowish brown.

Abdomen (Pl. 4B): Tergites yellow. Sternites grayish yellow.

Male terminalia ( Fig. 37 A −F): Epandrium pubescent in small patches on posterior, subdorsal to medial portion, with 17 long setae on medial to ventral portion and 13 shorter setae on caudoventral portion. Surstylus with 1 long, thick seta on dorsal margin in addition to 1 stout, upturned prensiseta at caudodorsal corner, 6 prensisetae along distal margin and 1 seta near ventral apex. Cercus with sparse pubescence on medial to ventral portion and ca. 25 long setae. Hypandrium nearly parallel-sided, roundish on anterior margin. Gonopod well developed, apically rounded. Paramere slightly waved on dorsosubapical margin, with 7 sensilla arranged in somewhat irregular row. Aedeagal basal process slightly shorter than 1/2 length of paramere.

Female terminalia ( Fig. 37 G, H; Pl. 7D): Oviscapt valve yellowish brown, gently curved on dorsosubapical margin in lateral view, with 4 dorsal ovisensilla and 16−19 ventral ones arranged entirely at nearly equal intervals. Spermathecal capsule brown; introvert depth of duct about 4/5 of capsule height.

Measurements: BL = 2.67 (5♂ paratypes: 2.28−2.70, 5♀ paratypes: 2.69−2.93) mm, ThL = 1.18 (1.04−1.15, 1.21−1.30) mm, WL = 2.45 (2.30−2.38, 2.52−2.77) mm, WW = 1.02 (0.95−1.02, 1.05−1.14) mm.

Indices: arb = 2/1 (5♂, 5♀ paratypes: 2−3/1), FW/HW = 0.45 (0.44−0.47), ch/o = 0.08 (0.07−0.14), prorb = 1.13 (0.96−1.22), rcorb = 0.60 (0.47−0.61), orbito = 0.82 (0.81−1.04), vb = 0.40 (0.33−0.49), dcl = 0.62 (0.53−0.65), dcp = 0.39 (0.33−0.45), sterno = 0.68 (0.57−0.65), m-sterno = 0.72 (0.64−0.78), sctl = 1.03 (0.96−1.08), sctlp = 1.04 (0.95−1.29), C = 2.60 (2.56−2.96), 4c = 0.83 (0.70−0.85), 4v = 1.66 (1.51−1.76), 5x = 1.38 (1.33−1.61), ac = 2.24 (2.15−2.77), M = 0.41 (0.40−0.47), C3F = 0.37 (0.22−0.38).

Holotype. ♂ (#00089), Liangjiaren, Hutiaoxia, Shangri-la, Diqing, Yunnan, China, 27°08′43′′N, 100°33′06′′E, ca. 1800 m, 21.viii.2011, ex Impatiens sp.11 (with purple flowers), J.J. Gao ( KIZ).

Paratypes. CHINA: 5♂, 7♀ (#00094, #00095, #00097−9, #00105, #00108, #01542, #01547, #01548), same data as holotype ( KIZ, SEHU).

Distribution. China (Yunnan).

Etymology. Referring to the curved (curvi-) oviscapt valve (valva) in lateral view.

Figures

FIGURE 37. Impatiophila curvivalva Fu & Gao, sp. nov. Adult male (holotype, # 00089) and female (paratype, # 00097): A, periphallic organs (caudolateral view); B, caudoventral part of epandrium; C, surstylus (caudal view); D, tenth sternite; E, phallic organs (dorsal view); F, phallic organs (lateral view); G, oviscapt (lateral view); H, oviscapt (ventral view).