Impatiophila xiaoi 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 : 40-42

11) Impatiophila xiaoi Fu & Gao , sp. nov.

( Fig. 21 ; Pl. 2B; Pl. 6J)

Diagnosis. Scutum pale brown, with 4 blackish brown to black, longitudinal stripes; two median ones faded and converged with each other posteriorly; scutellum with blackish brown stripe medially, pale brown laterally (Pl. 2B). Abdominal tergites III‒V each with black, medially widely interrupted, caudal band (Pl. 2B). Setae of middle row on 2nd costal section all heavy, peg-like, present beyond tip of R2+3. Tenth sternite somewhat obovate, with small notch medially on dorsal margin ( Fig. 21 D). Oviscapt valve moderately convex dorsosubapically in lateral view ( Fig. 21 G).

Description (♂, ♀). Head: Cibarium with 2‒3 medial and 4–7 posterior sensilla per side.

Thorax (Pl. 2B): Postpronotum yellowish brown; pleura blackish brown to black.

Wing (Pl. 2B) pale brown; veins brown. C1 bristle 2, subequal. Haltere pale yellow.

Legs: (P1. 2B)Hindleg tibia without black, apically blunt, stout spines at outer apex on underside.

Abdomen: Sternites grayish yellow; male VI somewhat quadrate, slightly wider than long.

Male terminalia ( Fig. 21 A −F): Epandrium pubescent posteriorly on dorsal 1/3 and sparsely on median portion, ventrally with 11 long setae; caudoventral portion somewhat rounded apically, with ca. 30 short, stout setulae. Surstylus with 1 seta in addition to 2 stout, upturned prensisetae around caudodorsal corner, 7 apically converging prensisetae along distal margin and 1 short seta near ventral apex. Cercus largely pubescent except for posterior to ventral portion, with 28−30 long setae. Hypandrium long, largely parallel-sided, with apodeme on anterior margin. Gonopod apically curved ventrad, hook-like in lateral view. Paramere auricular, slightly convex at dorsomedian edge, not longer than twice of width, with 5 sensilla. Aedeagal basal process slightly longer than 1/2 length of paramere.

Female terminalia ( Fig. 21 G, H; Pl. 6J): Oviscapt valve slightly wider than 1/2 of its length, less expanded dorsomedially in lateral view, with 2 dorsal ovisensilla on convex, dorsosubapical margin, 7 lateral ones and 9 distally increasing in size on nearly straight, ventral margin. Spermathecal capsule brown; introvert depth of duct about 1/2 of capsule height.

Measurements: BL = 2.45 (4♀ paratypes: 2.59−3.16) mm, ThL = 1.32 (1.30−1.35) mm, WL = 2.73 (2.76−2.82) mm, WW = 1.22 (1.22−1.29) mm.

Indices: arb = 2/1 (4♀ paratypes: 2/1), FW/HW = 0.45 (0.45−0.46), ch/o = 0.13 (0.11−0.16), prorb = 0.85 (0.95−1.11), rcorb = 0.63 (0.55−0.78), orbito = 1.00 (0.92−1.10), vb = 0.41 (0.39−0.45), dcl = 0.46 (0.51−0.54), dcp = 0.34 (0.40−0.42), sterno = 0.63 (0.60−0.70), m-sterno = 0.78 (0.71−0.81), sctl = 1.00 (1.00−1.06), sctlp = 1.11 (0.87−1.02), C = 2.53 (2.58−2.64), 4c = 0.83 (0.77−0.84), 4v = 1.55 (1.41−1.69), 5x = 1.28 (1.29−1.52), ac = 2.52 (2.21−2.68), M = 0.42 (0.39−0.49), C3F = 0.17 (0.20−0.27).

Holotype. ♂ (#00117), Cangshan National Nature Reserve, Dali, Yunnan, China, ca. 2000 m, 25.viii.2011, ex Impatiens radiate Hook. f. ( Fig. 1 E), J.J. Gao ( KIZ).

Paratypes. CHINA: 4♀ (#00125−8), same data as holotype ( KIZ, SEHU).

Distribution. China (Yunnan).

Etymology. Patronym, in honor of Dr. Wen Xiao, Dali University, who helped us in collecting the specimens of the new species.

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 21. Impatiophila xiaoi Fu & Gao, sp. nov. Adult male (holotype, # 00117) and female (paratype, # 00125): 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).