Heteropterna oroszi L. PAPP, 2006

Papp, L., Merz, B. & Földvári, M., 2006, DIPTERA OF THAILAND A summary of the families and genera with references to the species representations, Acta Zoologica Academiae Scientiarum Hungaricae 52 (2), No. 2, pp. 97-269 : 130-132

Heteropterna oroszi L. PAPP , sp. n.

( Figs 22–25 )

Holotype male ( HNHM, left hind leg lost, abdomen with genitalia in a plastic microvial with glycerol): THAILAND: Trang Prov., Khao Chong Botanic Garden , along the stream below waterfall, Nov 14, 2004, No. 30, leg. L. PAPP & M. FÖLDVÁRI.

Measurements in mm: body length 4.46, wing length 3.37, wing breadth 1.38.

Head dark, covered with grey microtomentum, only ocelli are shiny. Palpi minute and black like proboscis. Two large lateral ocelli and a minute anterior one. Face linear at middle. Eyes covered by short whitish, very dense cilia. Basal 11 flagellomeres dark brown, only anterior lateral part of flagellomeres 2–6 with diffuse yellowish stripe. Flagellomeres 12–13 yellow, apical flagellomere bicolorous ( Fig. 25 ) and slightly bifid apically (best seen subdorsally): medial part yellow, rest dark brown. Flagellomeres much flattened, medial ones 4 times broader than long.

Scutum dark brown but anterior half yellow with a thin sagittal brown line and a pair of rectangular brown stripe, which embrace (with the dark lateral and caudal colour) a pair of quadrate yellow spots. Supraalar area with long dense black setae. Postpronotum, antepronotum and proepisternum dark brown, bulging, latter two sclerites with long black setae. Prosternum with some lateral setae. Anepisternum dark brown, katepisternum (preepisternum), anepimeron and laterotergite less dark brown, metepisternum, metepimeron and metanotum dark brown again. Scutellum with medium long apical setae, no discal setae. Subscutellar membraneous area forms a regular triangle.

(lateral) view. Scales: 0.2 mm for Figs 22–24 , 0.109 mm for Fig. 25

Coxae all blackish brown, bases of femora dark. Legs mainly light brown. Coxae, particularly cx1 and cx2 with dense long black setae. Tibial spurs: 1 (brown): 2 (white): 2 (white). Hind tibia thickened in its apical half (almost bat-shaped) and darkened. Hind basitarsus very long (1.13 mm), thick, flattened laterally, width 0.12 mm at middle. Claws short thick with ventral dentation.

Wing’s basic colour light brown and covered with dense microtrichia. Veins thick, dark brown, particularly so for radial veins. A large dark brown spot in costal, subcosta and r1 cells to the apex of Sc, down to M1–2 fork base; another quadrate dark spot from 2/5 of Sc-R1 costal section to the apex of R4 into r5 cell, where it is confluent with the apical (somewhat less dark) spot. R1 setose in its whole length and R5 setose from base of M1–2 to apex, Sc and other veins bare. Costa continued on 2/5 of R5-M1 costal section (0.215 mm). M2 does not reach wing margin. Cu1 strongly downcurving, Cu2 distinct distally to Cu1 curvature.

First abdominal sclerites dark brown, tergites 2- yellow with brown caudal margin. Sternites 2- with a pair of lateral and 2 medial brown spots, which are confluent on S3 and S4, S5 to S7 with broad brown caudal margin, T8 and S8 dark brown. Tergite 9 ( Fig. 22 ) rather long, with a pair of digitiform lateral caudal processes, proctiger with almost sharp lateral projections, cerci normal with medium-long thin setae. Gonocoxites ( Fig. 23 ) with a medium-deep but broad caudal incision and with a pair of medial processes, which bear short thick black setae. Gonostylus ( Fig. 24 ) long, apex quadrate in lateral view, basal process rather large, with a black apical and another black subapical teeth. No long setae on basal process, otherwise gonostlus covered by almost evenly thick setae.

This species runs to H. fenestralis MATILE, 1990 in MATILE’ s key, but wings are much different: subcostal “windows” are much longer.

I name this new species to the honour of Mr. ANDRÁS OROSZ (Dept. of Zoology, HNHM), who was our partner during the collection trip, and who collected so many valuable dipterous specimens for the Diptera Collection formerly.

Figures

Figs 22–25. Heteropterna oroszi sp. n., holotype male. 22 = tergite 9 with cerci and proctiger, 23 = gonocoxite and gonostylus, ventral view, 24 = gonostylus, lateral view, 25 = apex of antenna, inner