Impatiophila 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 : 27

Impatiophila Fu & Gao , gen. nov.

Diagnosis. One or two apically blunt, stout spine(s) present at outer apex on underside of hindleg tarsomeres I to IV ( Fig. 3 I, K). Dorsal, stout, upturned prensiseta(e) of surstylus more or less separated from others ( Fig. 5 E). Ovisensilla on ventral margin of oviscapt valve not more widely spaced in proximal portion than in other portions ( Fig. 6 C, G).

Common characters. Eyes red to reddish purple, with thick interfacetal setulae. Frons brown to blackish brown, nearly parallel-sided; ocellar triangle and fronto-orbital plates glossary black. Antennal pedicel cylindrically conical, yellow to brown, blackish brown laterally, with 2 prominent and a few small setae; first flagellomere yellow. Face yellowish brown; carina narrow, relatively flat. Gena narrow, yellowish brown; postgena and occiput black. Palpus apically roundish, with 1 prominent seta apically and several short ones apically to ventrally. Cibarium protruded at anterolateral corners, with 4 anterior sensilla arranged in somewhat irregular quadrangle and 2 pair of sensilla campaniformia. Acrostichal setulae in 8 regular rows. Postpronotal setae 2 (4 in I. actinia comb. nov.), subequal. Prescutellar setae absent. Basal scutellar setae usually diverged from each other; apical scutellar setae cruciate. Mid katepisternal seta as long as or slightly longer than anterior katepisternal one; katepisternum without setulae beside prominent seta near caudoventral corner. Wing apically round, relatively long and narrow, extending much beyond abdominal tip; C1 setae 2; R2+3 slightly curved to costa; R4+5 and M nearly parallel distally. Preapical dorsal setae present on tibiae of all legs; apicals only on tibiae of midlegs; tarsomere Vs of all legs dark, with large claws. Female abdominal tergite VII separated into 2 lateral plates, blackish brown. Epandrium usually truncate ventrally. Surstylus with a row of prensisetae like canine teeth along caudal margin. Cercus separated from epandrium. Hypandrium without paramedian setae, posteriorly fused with gonopods. Gonopods flap-shaped, apically narrowing, close to each other, forming clamp-like structure. Paramere postolaterally fused with gonopod, with sensilla arranged in longitudinal row from subapical to subbasal portion (except I. quadrangulata sp. nov.: in chevroned row). Aedeagus membranous; basal process well developed, sclerotized; apodeme rod-shaped, anteriorly expanded in lateral view.

Type species. Hirtodrosophila yapingi Gao, 2011 .

Etymology. Referring to the preference (Latin: -philus) to the genus of their main host plants ( Impatiens ). Gender: feminine.

Key. The multiple-entry key “ Impatiophila ( Diptera : Drosophilidae )” to all species of this genus has been constructed based on a database of morphological characters, and is available from the website “Biological Classification and Identification System (BioCIS: http://biokey.museum.hokudai.ac.jp/Classification/index.jsp)”.

Figures

FIGURE 3. Characters 1 ‒ 5. A, B, cibarium (dorsal view) of Impatiophila yapingi (A, # 00116) and I. acutivalva (B, paratype ♂ # 00375); C, D, thorax (dorsal view) of I. acutivalva (C, holotype ♂ # 00282) and I. magnimaculata (D, paratype ♂ # 00544); E – H, wing (anterodistal portion) of I. securiformis (E, paratype ♂ # 01507), I. linzhiensis (F, holotype ♀ # 00543), I. longifolia (G, paratype ♂ # 00321) and I. bifurcata (H, paratype ♂ # 02582); I – L, hindleg of I. truncivalva (I, paratype ♂ # 01536), I. yapingi (J, ♂ # 03752), I. longifolia (K, paratype ♂ # 00321) and Lissocephala sabroskyi (L, ♂ from Bogor, West Java, Indonesia).

FIGURE 5. Characters 8 – 14: male terminalia. A – F, periphallic organs (caudolateral view) of Impatiophila securiformis (A, # 01501), I. longifolia (B, # 00508), I. motuoensis (C, # 00273), I. epubescens (D, # 00280), I. pentamaculata (E, ♂ from Jizushan, Dali, Yunnan, China) and Lissocephala sabroskyi (F, ♂ from Bogor, West Java, Indonesia); G – J, phallic organs (lateral view) of I. curvivalva (G, H; # 00089) and I. menba (I, J; # 00307).

FIGURE 6. Characters 15 – 25: female terminalia. A – L, oviscapt valve of Impatiophila unicolorata (A, lateral view; B, ventral view; # 01439), I. viasericaria (C, lateral view; D, ventral view; # 01406), I. latipennata (E, lateral view; F, ventral view; # 00303), I. magnimaculata (G, lateral view; # 01572), I. curvivalva (H, enlarged apical portion in lateral view; I, lateral view; # 00097), I. tumidivalva (J, lateral view; # 00376) and I. bifurcata (K, lateral view; L, ventral view; # 01127); M, N, spermatheca (lateral view) of I. yapingi (M, ♀ from Kunming, Yunnan, China) and I. actinia (N, ♀ from Chitou, Taiwan).