Impatiophila pipa 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 : 74-76

36) Impatiophila pipa Fu & Gao , sp. nov.

( Fig. 42 ; Pl. 4G; Pl. 7I)

Diagnosis. Abdominal tergites unicolorously glossy black (Pl. 4G). Labellum with 6 pseudotracheae per side. Paramere longer than twice of width, smooth on dorsal and ventral margins, with 5 sensilla much more widely spaced distally ( Fig. 42 F). Tenth sternite as long as wide, nearly parallel-sided ( Fig. 42 D). Oviscapt valve with 5 dorsal ovisensilla ( Fig. 42 G).

Description (♂, ♀). Head: Cibarium with 3−4 medial and 3−4 posterior sensilla per side. Labellum with 6 pseudotracheae per side.

Thorax (Pl. 4G): Postpronotum blackish brown; scutum and scutellum glossy black; pleura blackish brown to black.

Wing (Pl. 4G) hyaline, slightly infuscate. C1 setae 2, subequal. Haltere yellow.

Legs (Pl. 4G) yellowish brown. Hindleg tarsomere I with 2 black, apically blunt, stout spines at outer apex on underside.

Abdomen: Sternites grayish brown.

Male terminalia ( Fig. 42 A −F): Epandrium densely pubescent except for anterior margin and ventral 1/3, with ca 15 long setae on ventral half and ca. 20 shorter setae on caudoventral portion. Surstylus with 1 thick seta in addition to 1 stout, upturned prensiseta above caudodorsal corner, 8 prensisetae along distal margin and 1 seta at ventral apex. Tenth sternite with W-shaped notch medially on dorsal margin. Cercus pubescent on anterior portion, with ca. 25 long setae. Hypandrium slightly narrowing anteriorly, roundish on anterior margin. Gonopod somewhat fan-shaped and apically more or less acute in lateral view. Aedeagal basal process about 1/2 length of paramere.

Female terminalia ( Fig. 42 G, H; Pl. 7I): Oviscapt valve yellowish brown, obliquely truncate on dorsosubapical margin in lateral view, with 13–14 ventral ovisensilla arranged entirely at nearly equal intervals. Spermathecal capsule brown; introvert depth of duct about 4/5 of capsule height.

Measurements: BL = 2.69 (6♂ paratypes: 2.11−2.77, 2♀ paratypes: 2.27−2.30) mm, ThL = 1.13 (0.96−1.13, 1.15−1.18) mm, WL = 2.34 (2.03−2.42, 2.42−2.49) mm, WW = 0.97 (0.87−1.04, 1.05−1.06) mm.

Indices: arb = 2/1 (6♂, 2♀ paratypes: 2/1), FW/HW = 0.42 (0.41−0.45), ch/o = 0.06 (0.08−0.12), prorb = 1.03 (5♂, 2♀ paratypes: 1.03−1.17), rcorb = 0.59 (5♂, 2♀ paratypes: 0.50−0.59), orbito = 1.25 (0.82−1.06), vb = 0.41 (0.36−0.59), dcl = 0.52 (0.46−0.63), dcp = 0.37 (0.32−0.46), sterno = 0.65 (0.62−0.67), m-sterno = 0.78 (0.68−0.84), sctl = 0.96 (0.94−1.10), sctlp = 1.36 (0.88−1.35), C = 2.63 (2.44−2.65), 4c = 0.85 (0.79−0.89), 4v = 1.74 (1.55−1.70), 5x = 1.50 (1.42−1.65), ac = 2.34 (2.17−2.47), M = 0.45 (0.41−0.49), C3F = 0.21 (0.14−0.26).

Holotype. ♂ (#00202), Maoershan National Nature Reserve, Xing’an, Guilin, Guangxi, China, 19.iii.2009, ex flowers of Gesneriaceae sp.1 ( Fig. 1 G), J.J. Gao ( KIZ).

Paratypes. CHINA: 3♂ (#00204, #00206, #00208), same data as holotype; 1♀ (#01407), Jiujiezi, Mangkuan Town, Longyang County, Baoshan District, Yunnan, ca. 1900 m, 24.ix.2012, ex Impatiens flowers, J.J. Gao; 1♂ (#00395); 1♂ (#00113), Banpo, Yixiang Town, Simao County, Pu’er District, Yunnan, 2.x.2011, J.J. Gao; 1♂ (#01699), Haoping, Taibaishan National Nature Reserve, Baoji, Shaanxi, ex yellow Impatiens flowers, 16.viii.2013, J.J. Gao; 1♂ (#03577), Huangcaoling, Jinping, Jingdong, Yunnan, N24º22.501´, E100º46.141´, ca. 2100 m, 1.ix.2014, ex Impatiens racemosa DC. ( Fig. 1 F), J.J. Gao, M.J. Toda ( KIZ, SEHU).

Distribution. China (Guangxi, Yunnan, Shaanxi).

Etymology. “ Pipa ” means lute in Chinese, referring to the lute-shaped oviscapt in ventral view.

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 42. Impatiophila pipa Fu & Gao, sp. nov. Adult male (holotype, # 00202) and female (paratype, # 01407): 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).