Impatiophila latipennata 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 : 55-57

21) Impatiophila latipennata Fu & Gao , sp. nov.

( Fig. 31 ; Pl. 3D; Pl. 6S)

Diagnosis. Heavy, peg-like setae of middle row on 2nd costal section interspersed with weak, trichoid ones. Hindleg tibia with 1 black, apically blunt, stout spine at outer apex on underside. Epandrium deeply concaved on lower caudal margin, resulting in prominent caudoventral lobe ( Fig. 31 A). Tenth sternite somewhat cordiform, with deep, narrow, V-shaped, median notch on dorsal margin ( Fig. 31 D).

Description (♂, ♀). Head: Cibarium with 2 medial and 6 posterior sensilla per side.

Thorax (Pl. 3D): Postpronotum, scutum and scutellum glossy black; pleura blackish brown to black.

Wing (Pl. 3D) pale brown; veins dark brown. C1 setae 2, ventral one shorter and thinner. Haltere grayish yellow.

Legs (Pl. 3D) yellowish brown.

Abdomen (Pl. 3D): Tergites glossy black. Sternites grayish brown; male VI posteriorly wider, concave on posterior margin.

Male terminalia ( Fig. 31 A −F): Epandrium pubescent posteriorly on dorsal 1/2, ventrally with ca. 10 setae; caudoventral lobe with ca. 13 setae. Surstylus with 2 setae in addition to 1 stout, upturned prensiseta around caudodorsal corner, 7 apically converging prensisetae along distal margin and 3 short setae near ventral apex. Cercus sparsely pubescent on anteromedial portion, with ca. 20 long setae. Hypandrium nearly parallel-sided, roundish on anterior margin. Gonopod apically somewhat acutely projected. Paramere not longer than twice of width, with 7sensilla. Aedeagal basal process about 2/3 length of paramere.

Female terminalia ( Fig. 31 G, H; Pl. 6S): Oviscapt valve brown, gently curved on dorsosubapical margin and strongly expanded dorsomedially in lateral view, with 3−4 dorsal ovisensilla, 11−12 lateral ones on slightly convex (in ventral view) margin of apicolateral flap and 9−11 distally slightly increasing in size on convex, ventral margin; apicolateral flap well developed, turnup in lateral view. Spermathecal capsule brown; introvert depth of duct about 1/2 of capsule height.

Measurements: BL = 2.21 (1♂ paratype: 1.80, 3♀ paratypes: 1.77−2.45) mm, ThL = 0.87 (0.80, 0.68−1.10) mm, WL = 1.93 (1.80, 1.58−2.26) mm, WW = 0.88 (0.83, 0.70−0.98) mm.

Indices: arb = 2/1 (1♂, 3♀ paratypes: 2−3/1), FW/HW = 0.49 (0.44−0.52), ch/o = 0.10 (0.07−0.14), prorb = 0.90 (0.92−1.11), rcorb = 0.65 (0.68−0.78), orbito = 0.85 (0.91−1.08), vb = 0.39 (0.40−0.46), dcl = 0.57 (0.37−0.60), dcp = 0.38 (0.34−0.42), sterno = 0.70 (0.64−0.73), m-sterno = 0.79 (0.55−0.77), sctl = 1.00 (1.02−1.17), sctlp = 0.92 (0.92−1.15), C = 2.47 (2.06−2.73), 4c = 0.83 (0.82−1.00), 4v = 1.52 (1.61−1.70), 5x = 1.53 (1.42−1.79), ac = 2.55 (2.35−2.99), M = 0.44 (0.45−0.53).

Holotype. ♂ (#00604), Beibeng Town, Motuo County, Linzhi District, Xizang, China, 27.IX.2010, ex Impatiens sp.9 (with yellow flowers), J.J. Gao ( KIZ).

Paratypes. CHINA: 1♂, 1♀ (#00378, #00608), same data as holotype; 2♀ (#01200, #01524), along the way from Yarang, Motuo Town to the county seat of Motuo County, 1.x.2010, ex Impatiens siculifer Hook. f. ( Fig. 1 H), J.J. Gao ( KIZ).

Distribution. China (Xizang).

Etymology. Referring to the broad (latus), pinnate (pennatus), apicolateral flap of oviscapt valve.

Figures

FIGURE 1. Flowers from which some of the BVD (Impatiophila gen. nov.) flies employed in the present study were collected. Sites of photographing are given in parentheses (see Fig. 2 for detailed information about each site). A, Impatiens siculifer Hook. f. (site 3); B, Impatiens sp. aff. bahanensis Hand. - Mazz (site 2); C, Impatient desmantha Hook. f. (site 1), D, Impatiens arguta Hook. f. et. Thoms. (site 4); E, Impatiens radiata Hook. f. (site 10); F, Impatiens racemosa (site 17); G, Gesneriaceae sp. 1 (site 22); H, Impatiens siculifer Hook. f. (site 6); I, Impatiens uniflora Hayata (site 23); J, Gesneriaceae sp. 2 (site 6).

FIGURE 31. Impatiophila latipennata Fu & Gao, sp. nov. Adult male (paratype, # 00608) and female (paratype, # 00378): 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).