Impatiophila taibaishanensis 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 : 49

17) Impatiophila taibaishanensis Fu & Gao , sp. nov.

( Fig. 27 ; Pl. 2H; Pl. 6O)

Diagnosis. Abdominal tergites III −V each with broad, blackish brown to black, caudal band medially narrowly interrupted or notched (Pl. 2H). Setae of middle row on 2nd costal section all heavy, peg-like setae, present beyond tip of R2+3. Tenth sternite medially slightly convex on dorsal margin, dorsally dilated ( Fig. 27 D). Oviscapt valve with 13 lateral ovisensilla on slightly convex (in ventral view) margin of apicolateral flap ( Fig. 27 H).

Description (♂, ♀). Head: Cibarium with 3 medial and 5 posterior sensilla per side.

Thorax (Pl. 2H): Postpronotum yellowish brown; scutum black; scutellum black, laterally brown; pleura dark brown to blackish brown.

Wing (Pl. 2H) pale brown; veins yellowish brown. C1 setae 2, ventral one shorter and thinner. Haltere whitish yellow.

Legs: (PL. 2H): Hindleg tibia without black, apically blunt, stout spine at outer apex on underside.

Abdomen (Pl. 2H): Tergite I dark brown; II yellowish brown, with broad, black caudal band medially interrupted. Sternites pale grayish brown; male VI posteriorly wider, concave on posterior margin.

Male terminalia ( Fig. 27 A −F): Epandrium posteriorly pubescent on dorsal 1/2, ventrally with ca. 8 long setae; caudoventral portion broad, somewhat angular dorso-apically, with ca. 20 short spines. Surstylus with 2 thick setae in addition to 1 stout, upturned prensiseta around caudodorsal corner, 4 apically converging prensisetae along distal margin and 3 short setae near ventral apex. Cercus pubescent in patches nearly overall, with ca. 31 long setae. Hypandrium 2/3 as wide as long, nearly parallel-sided. Gonopod somewhat triangular, pointed apically in lateral view. Paramere much longer than twice of width, gently curved dorsad, with 6 sensilla. Aedeagal basal process nearly 1/2 length of paramere.

Female terminalia ( Fig. 27 G, H; Pl. 6O): Oviscapt valve brown, gently curved on dorsosubapical margin and less expanded dorsomedially in lateral view, with 4 dorsal ovisensilla and 9 distally slightly increasing in size on slightly convex, ventral margin. Spermathecal capsule brown; introvert depth of duct about 3/5 of capsule height.

Measurements: BL = 2.57 (1♂ paratype: 2.57, 1♀ paratype: 2.83) mm, ThL = 1.22 (1.15, 1.21) mm, WL = 2.63 (2.55, 2.63) mm, WW = 1.18 (1.14, 1.017) mm.

Indices: arb = 2−3/1 (1♂, 1♀ paratypes: 3/1), FW/HW = 0.41 (0.41−0.42), ch/o = 0.08 (0.06−0.08), prorb = 1.01 (1.00−1.00), rcorb = 0.69 (0.67−0.69), orbito = 1.01 (1.05−1.10), vb = 0.39 (0.32−0.36), dcl = 0.55 (0.59), dcp = 0.38 (0.37−0.39), sterno = 0.68 (0.66−0.76), m-sterno = 0.48 (1♀ paratype: 0.79), sctl = 1.07 (1♂ paratype: 1.05), sctlp = 1.20 (1.19−1.33), C = 2.67 (2.29−2.60), 4c = 0.84 (0.82−0.93), 4v = 1.71 (1.62−1.72), 5x = 1.69 (1.58−1.63), ac = 2.76 (2.92−3.33), M = 0.47 (0.44−0.46), C3F = 0.25 (0.21−0.24).

Holotype. ♂ (#01700), Haoping, Mt. Taibai, Taibaishan National Nature Reserve, Baoji District, Shaanxi, China, 16.viii.2013, ex Impatiens sp.8 (with yellow flowers), J.J. Gao ( KIZ).

Paratypes. CHINA: 1♂, 1♀ (#02541, #02542), same data as holotype ( KIZ).

Distribution. China (Shaanxi).

Etymology. Pertaining to the type locality.

Figures

FIGURE 27. Impatiophila taibaishanensis Fu & Gao, sp. nov. Adult male (holotype, # 01700) and female (paratype, # 02542): 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).