Impatiophila convergens 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 : 30-32

4) Impatiophila convergens Fu & Gao , sp. nov.

( Fig. 14 ; Pl. 1C; Pl. 6C)

Diagnosis. Setae of middle row on 2nd costal section all weak, trichoid. Hindleg tibia without black, apically blunt, stout spine at outer apex on underside. Tenth sternite somewhat triangularly convex on dorsal margin ( Fig. 14 D). Oviscapt valve distally concave on ventral margin in lateral view, with 9‒10 lateral ovisensilla ( Fig. 14 G, H).

Description (♂, ♀). Head: Cibarium with 2 medial and 4−7 posterior sensilla per side.

Thorax (Pl. 1C): Postpronotum brown; scutum blackish brown, paler along transverse suture, medially with narrow, pale brown, longitudinal stripe; scutellum dark brown; pleura brown to blackish brown.

Wing (Pl. 1C) hyaline; veins yellow. C1 setae 2; ventral one thinner and shorter. Haltere pale yellow.

Legs (Pl. 1C) yellow.

Abdomen (Pl. 1C): Tergites each with broad, pale brown, caudal band. Sternites pale yellow; male VI somewhat quadrate, slightly longer than wide, nearly straight or slightly concave on posterior margin.

Male terminalia ( Fig. 14 A −F): Epandrium posteriorly pubescent on dorsal 2/3, ventrally with 8 long setae; caudoventral portion broad, roundish distally, with a patch of ca. 20 short, stout setulae. Surstylus with 2 long setae in addition to 2 stout, upturned prensiseta around caudodorsal corner, 4 apically converging prensisetae along distal margin and 2 long setae near ventral apex. Cercus sparsely pubescent on large area, with ca. 20 long setae. Hypandrium somewhat trapezoid in ventral view. Gonopod apically oval in lateral view. Paramere slightly curved dorsad subapically, longer than twice of width in lateral view, with 6 sensilla. Aedeagal basal process about 3/5 length of paramere.

Female terminalia ( Fig. 14 G, H; Pl. 6C): Oviscapt valve gently curved on dorsosubapical margin and less expanded dorsomedially in lateral view, with 4 dorsal ovisensilla and 9−10 ventral ones distally increasing in size. Spermathecal capsule brown; introvert depth of duct about 1/3 of capsule height.

Measurements: BL = 2.08 (1♀ paratype: 2.09) mm, ThL = 0.91 (0.96) mm, WL = 2.16 (2.17) mm, WW = 0.99 (1.02) mm.

Indices: arb = 2/1 (1♀ paratype: 2−3/1), FW/HW = 0.51 (0.52), ch/o = 0.21 (0.16), prorb = 0.93 (0.92), rcorb = 0.67 (0.70), orbito = 1.25 (1.20), vb = 0.45 (0.41), dcl = 0.50 (0.54), dcp = 0.38 (0.42), sterno = 0.64 (0.63), msterno = 0.72 (0.74), sctl = 1.05 (0.99), sctlp = 1.06 (1.07), C = 2.21 (2.45), 4c = 0.96 (0.82), 4v = 1.65 (1.49), 5x = 1.42 (1.46), ac = 2.50 (2.50), M = 0.46 (0.45).

Holotype. ♂ (#00311), Hanmi Village, Beibeng Town, Motuo County, Linzhi District, Xizang, China, 29°22′00′′N, 95°07′39′′E, ca. 2130 m, 26.ix.2010, ex Impatiens sp. aff. bahanensis Hand.-Mazz. ( Fig. 1 B), J.J. Gao ( KIZ).

Paratype. CHINA: ♀ (#00540), same data as holotype ( KIZ).

Distribution. China (Xizang).

Etymology. Referring to the converging ( convergens ) prensisetae on the distal margin of surstylus.

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 14. Impatiophila convergens Fu & Gao, sp. nov. Adult male (holotype, # 00311) and female (paratype, # 00540): 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).