Impatiophila oblongata 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 : 80-81

40) Impatiophila oblongata Fu & Gao , sp. nov.

( Fig. 46 ; Pl. 5C; Pl. 7M)

Diagnosis. Tergites II −VI with broad, black, caudal bands; bands on II −IV medially narrowly interrupted/ constricted; band on V medially neither interrupted/constricted nor protruded (Pl. 5C). Scutum black, posteriorly blackish brown, paler along transverse suture, notopleural line and lines connecting ipsilateral dorsocentral setae; scutellum blackish brown, paler marginally (Pl. 5C). Hindleg tarsomere I with 1 black, apically blunt, stout spine at outer apex on underside. Tenth sternite longer than wide, distally bilobed, with deep, somewhat U-shaped, median notch on dorsal margin ( Fig. 46 D). Hypandrium longer than twice of width ( Fig. 46 E).

Description (♂, ♀). Head: Cibarium with 2−4 medial and 5−6 posterior sensilla per side. Labellum with 6 pseudotracheae per side.

Thorax (Pl. 5C): Postpronotum brown; pleura brown to blackish brown.

Wing (Pl. 5C) hyaline; veins yellowish brown. C1 setae 2, subequal. Haltere pale yellow.

Legs (Pl. 5C) yellowish brown.

Abdomen: Sternites pale yellowish brown.

Male terminalia ( Fig. 46 A −F): Epandrium pubescent in patches on posterior portion of dorsal 2/3, with ca. 13 long setae on ventrally half and with ca. 15 shorter setae on caudoventral portion. Surstylus with 1 thick seta in addition to 1 stout, upturned prensiseta above caudodorsal corner, 7 prensisetae along distal margin and 1 seta at ventral apex. Cercus slightly pubescent on anteromedial portion, with ca. 29 long setae. Hypandrium nearly parallel-sided, roundish on anterior margin. Gonopod narrow, protruded ventrad in lateral view. Paramere smooth dorsal and ventral margins, with 5 sensilla: distalmost one distantly located from others, but proximalmost two very close to each other. Aedeagal basal process about 1/2 length of paramere; aedeagal apodeme entirely thickened in lateral view.

Female terminalia ( Fig. 46 G, H; Pl. 7M): Oviscapt valve anteriorly triangularly narrowing in ventral view; valve brown, gently curved on dorsosubapical margin in lateral view, with 4−6 dorsal ovisensilla and 17−18 ventral ones arranged entirely at nearly equal intervals. Spermathecal capsule brown; introvert depth of duct about 7/8 of capsule height.

Measurements: BL = 2.87 (3♂ paratypes: 2.40−2.87, 5♀ paratypes: 2.55−3.00) mm, ThL = 1.27 (1.03−1.28, 1.20−1.32) mm, WL = 2.72 (2.43−2.77, 2.57−2.82) mm, WW = 1.18 (1.03−1.23, 1.13−1.23) mm.

Indices: arb = 2/1 (3♂, 5♀ paratypes: 2/1), FW/HW = 0.40 (0.40−0.43), ch/o = 0.11 (0.09−0.11), prorb = 1.00 (2♂, 5♀ paratypes: 1.00−1.17), rcorb = 0.56 (2♂, 5♀ paratypes: 0.45−0.60), orbito = 1.04 (0.71−1.08), vb = 0.41 (0.33−0.40), dcl = 0.59 (0.56−0.62), dcp = 0.36 (0.33−0.47), sterno = 0.71 (0.64−0.74), m-sterno = 0.74 (0.72−0.82), sctl = 1.04 (2♂, 4♀ paratypes: 0.92−1.00), sctlp = 1.19 (1.07−1.24), C = 2.54 (2.58−3.04), 4c = 0.77 (0.71−0.85), 4v = 1.52 (1.63−1.69), 5x = 1.41 (1.32−1.63), ac = 2.37 (2.13−2.71), M = 0.37 (0.41−0.48), C3F = 0.34 (0.23−0.36).

Holotype. ♂ (#02886), Shennongjia Forest Region, Hubei, China, 1520 m, 26.vii.1992, M.J. Toda ( KIZ).

Paratypes. CHINA: 1♂ (#02887), same data as holotype; 2♂, 5♀ ( KIZ: #02576, #02577, #02888−92), 2♂, 2♀ ( SEHU), Mt. E’mei, 19.vii.1992, M.J. Toda.

Distribution. China (Hubei, Sichuan).

Etymology. Referring to the oblong (oblongatus) hypandrium.

Figures

FIGURE 46. Impatiophila oblongata Fu & Gao, sp. nov. Adult male (paratype, # 02576) and female (paratype, # 02577): 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).