Elaphropeza lutea ( de Meijere, 1911 )

SHAMSHEV, IGOR V. & GROOTAERT, PATRICK, 2007, Revision of the genus Elaphropeza Macquart (Diptera: Hybotidae) from the Oriental Region, with a special attention to the fauna of Singapore, Zootaxa 1488 (1), pp. 1-164 : 108-110

Elaphropeza lutea ( de Meijere, 1911)

( Figs. 182–184 )

Drapetis lutea de Meijere, 1911: 332 (male and female).

Re-description. Male. Body length 1.7–2.0 mm, wing length 1.7–1.8 mm. Head with occiput entirely yellow, subshining. Eye rather deeply concave on posterior margin. Anterior and posterior ocellar bristles subequally long, the former proclinate, the latter lateroclinate. Inner verticals long, outer ones somewhat shorter. Frons rather long, brown. Antenna with scape and pedicel yellow, postpedicel and style brown. Pedicel with circlet of subequally short setulae. Postpedicel short, 1.5–1.7 times longer than wide. Style normally pubescent, about 5.0 times longer than postpedicel and nearly 2.5–2.6 times as long as scape, pedicel and postpedicel combined. Palpus small, pale yellow.

Thorax wholly yellow, with yellow bristles. Prothoracic episterna lacking long upturned bristle just above fore coxa, with short bristle in upper part. Postpronotal bristle hardly prominent. Mesonotum with 2 notopleural, 1 postsutural supra-alar, 1 postalar and 4 scutellar (inner ones very long, cruciate; outer ones very short) bristles. Acrostichal bristles 2-serial, quite long, lacking on prescutellar depression. Dorsocentral bristles multiserial in anterior part of scutum, becoming 1-serial and extending to base of scutellum, prescutellars longest.

Legs long, slender, almost entirely yellow, tarsomere 5 of all legs black. Coxae and trochanters with unmodified setation. Fore femur with rows of short antero- and posteroventral bristles and 2 longer bristles near base. Fore tibia lacking prominent bristles (except subapicals). Mid femur with 2 rows of spinule-like, short, ventral bristles, 1 long thin bristle near base and 1 anterior subapical bristle. Mid tibia with hardly prominent ventral spinules in apical part, lacking prominent bristles (except subapicals). Hind femur bearing 1 row of short anteroventrals and 3–4 erect dorsal bristles near base. Hind tibia with 1 anterodorsal bristle in middle part; apical projection hardly prominent, rounded, clothed in dense brownish setulae. Tarsi of all legs unmodified.

Wing normally developed, hyaline, covered with uniform microtrichia; veins yellowish to brownish yellow. Costal vein with moderately long setulae along anterior margin. Basal costal bristle moderately long, brownish. Costal index: 52/27/43/14. Vein Rs longer than crossvein bm-cu. Vein R2+3 smoothly arched. Veins R4+5 and M1+2 parallel near wing apex, both straight. Vein CuA1 reaching wing margin. Vein A1 present as fold. Crossvein bm-cu transverse. Crossvein r-m near middle of cell bm. Halter yellow.

Abdomen with tergite 1 pale yellow. Tergites 2 and 3 with narrow brownish yellow space; with unmodified setation. Tergite 4 broadest, brownish, subshining. Tergite 5 very narrow, brownish. Tergites 4 and 5 with squamiform setae. Tergites 6 and 7 yellowish, tergite 7 with moderately long posteromarginal bristles.

Terminalia ( Figs. 182–184 ) large, yellow. Cerci separated, short, as in Fig. 182 , left cercus with 2 spines, right cercus with 1 spine. Epandrium completely divided. Right epandrial lamella ( Fig. 183 ) subtriangular, with greatly produced apical part, covered with numerous bristles of different lengths, lacking spine-like bristles. Right surstylus not prominent. Left epandrial lamella small, fused to hypandrium, with 1 long bristle apically. Left surstylus ( Fig. 184 ) with upper lobe large, subtriangular, curved in apical part, with numerous long bristles along upper margin. Hypandrium with 2 moderately long strong bristles. Phallus very short. Two rodshaped apodemes.

Female. Abdominal segment 8 and cercus brownish yellow. Otherwise as in male.

Type material examined. Four males and 8 females syntypes pinned on one support] [red label] Drapetis / lutea / de Meijere, 1911 / ZMAN type DIPT.0486.1-9; on lower side of banana leaves [in Dutch]; Drapetis lutea [hand-written] / det. de Meijere / Type [hand-written]; Batavia / X.07 / Jacobson ( ZMAN).

De Meijere (1911) described this species after numerous specimens that are deposited in ZMAN. Currently, the type material is in good condition. One male was dissected and the genitalia were mounted separately. The male was marked with a label .

Distribution. Indonesia (Java).

Remarks. In having subequally long anterior and posterior ocellar bristles, E. lutea is closely related to E. luteoides sp. nov. and E. spicata sp. nov.

Figures

FIGURES 182–184. Elaphropeza lutea (de Meijere) 182. epandrium with cerci. 183. right epandrial lamella. 184. left surstylus.