Impatiophila maoershanensis 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 : 88-90

45) Impatiophila maoershanensis Fu & Gao , sp. nov.

( Fig. 51 ; Pl. 5H; Pl. 7R)

Diagnosis. Abdominal tergite III unicolorously blackish brown (Pl. 5H). Hindleg tibia with 2−4 black, apically blunt, stout spines at outer apex on underside. Setae of middle row on 2nd costal section of wing all heavy, peglike, reaching or beyond tip of R2+3. Dorsal 2/3 of surstylus broad, strongly protruded posteriad, with 4−5 setae on dorsal margin and 3−4 stout, upturned prensiseta on distal margin ( Fig. 51 A).

Description (♂, ♀). Head: Cibarium with 2−3 medial and 3−5 posterior sensilla per side: posterior sensilla slightly curved anteriad and anteromost one twice as long as posteromost, medial sensillum. Labellum with 6 pseudotracheae per side.

Thorax varying in color pattern from unicolorously blackish brown or black one (Pl. 5H) to pale-patterned one.

Wing (Pl. 5H) hyaline, slightly infuscate; veins brown. C1 setae 2, subequal. Haltere pale yellow.

Legs (Pl. 5H) yellowish brown. Hindleg tarsomeres I −IV each with 1 black, apically blunt, stout spine at outer apex on underside.

Abdomen: Tergites unicolorously dark brown to black (Pl. 5H), but varying on IV and V: some with caudal band medially neither interrupted/constricted nor protruded. Sternites grayish yellow; male VI somewhat quadrate, slightly longer than wide, nearly straight or slightly concave on posterior margin.

Male terminalia ( Fig. 51 A −F): Epandrium pubescent in small patches on posteromedial portion, with ca 10 long setae on ventral half and ca. 21 short spines on caudoventral portion distally broadly rounded. Surstylus with 7 prensisetae along deeply concave, ventral margin but no seta near ventral apex. Tenth sternite somewhat trapeziform, narrowing anteriorly, slightly concave on dorsal margin. Cercus pubescent on anteromedial portion, with ca. 19 long setae. Hypandrium trapeziform, longer than wide, posteriorly dilated horizontally and vertically. Gonopod broad, apically widely blunt. Paramere broad, shorter than twice of width, apically round, with 8 sensilla. Aedeagal basal process slightly shorter than 2/3 length of paramere.

Female terminalia ( Fig. 51 G, H; Pl. 7R). Oviscapt valve brown, apically much expanded in ventral view, forming well-developed lateral flap, gently curved on dorsosubapical margin, less expanded dorsomedially, somewhat convex on ventral margin in lateral view, with 4−5 dorsal ovisensilla, 12–13 lateral ones tightly arranged in nearly straight (in ventral view) row on margin of apicolateral flap and 5 ventral ones distally increasing in size and entirely arranged at nearly equal intervals; subapical trichoid ovisensillum stout, longer than apical, peg-like ovisensillum. Spermathecal capsule brown, wider than long, apically somewhat flat in lateral view; introvert depth of duct about 1/2 of capsule height.

Measurements: BL = 2.38 (5♂ paratypes: 2.00−2.38, 2♀ paratypes: 2.30−2.69) mm, ThL = 0.99 (0.96−1.07, 1.06−1.10) mm, WL = 2.11 (2.08−2.18, 2.14−2.19) mm, WW = 0.95 (0.91−0.97, 0.95−0.95) mm.

Indices: arb = 2/1 (5♂, 2♀ paratypes: 2−3/1), FW/HW = 0.44 (0.42−0.45), ch/o = 0.06 (0.07−0.10), prorb = n/ a (5♂, 1♀ paratypes: 0.96−1.00), rcorb = 0.77 (0.73−0.87), orbito = 1.36 (1.08−1.39), vb = 0.42 (0.41−0.47), dcl = 0.53 (0.54−0.60), dcp = 0.43 (0.39−0.44), sterno = 0.72 (0.64−0.80), m-sterno = 0.69 (0.71−0.83), sctl = 1.04 (0.95−1.10), sctlp = 0.97 (0.96−1.17), C = 2.15 (2.12−2.66), 4c = 0.83 (0.83−0.94), 4v = 1.47 (1.52−1.74), 5x = 1.63 (1.52−1.75), ac = 2.85 (2.28−2.94), M = 0.45 (0.45−0.51), C3F = 0.17 (0.00−0.14).

Holotype. ♂ (#00175), 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: 2♂, 2♀ (#00176, #00179−81), same data as holotype; 2♂, 1♀ (#00438, #00439, #02580), Huanglianshan Nature Reserve, Luchun, Honghe, Yunnan, 26.ix.2010, by net sweeping on herbaceous vegetation, Y.R. Su et al.; 1♂ (#01146), Jiujiezi, Baihualing, Mangkuan, Longyang, Baoshan, Yunnan, 24.ix.2012, J.J. Gao ( KIZ, SEHU).

Distribution. China (Guangxi, Yunnan).

Etymology. Pertaining to the type locality.

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 51. Impatiophila maoershanensis Fu & Gao, sp. nov. Adult male (holotype, # 00175) and female (paratype, # 00176): A, periphallic organs (caudolateral view); B, caudoventral part of epandrium; C, tenth sternite; D, phallic organs (dorsal view); E, phallic organs (lateral view); F, oviscapt (lateral view); G, oviscapt (ventral view).