Isoneuromyia jata Evenhuis

Evenhuis, Neal L., 2006, New species of Isoneuromyia Brunetti (Diptera: Keroplatidae) from the Oriental Region, Zootaxa 1140, pp. 1-29 : 25-26

Isoneuromyia jata Evenhuis , n. sp.

( Fig. 25 )

Diagnosis

Similar to variabilis but easily distinguished from it by the yellow scutellum (scutellum brown in variabilis ) and the brown palpi (palpi yellow in variabilis ).

Description

MALE. Lengths: Body: 7.0 mm; wing; 5.7 mm.

Head. Vertex and occiput immediately behind ocelli black; remainder of occiput yellow with fairly dense small black recumbent hairs, yellow tomentum on upper occiput. Ocelli in horizontal line. Frons yellowish white, bare. Antennae yellow; flagellomeres 1–6 with tinge of brown on dorsal surface. Face yellowish white, silvery pruinose with a few small black hairs apically. Palpi brown. Proboscis yellow.

Thorax. Mesonotum yellow with three black stripes coalesced into one, medial stripe not reaching pronotum. Scutellum minute, yellow. Mesonotum with scattered yellow tomentum, patch of thick black setae above wing root, on postalar calli, and on posterior margin of scutellum. Prescutellar area flared at postalar calli, shield like, slightly covering base of scutellum. Pronotal lobes yellow with intermixed black and yellow tomentum. Pleura (except yellow laterotergite) dark brown, bare; mediotergite dark brown medially, yellowish laterally, bare. Halter yellowish white.

Legs. Coxae yellowish, with black hairs and tomentum, vestiture densest on fore coxa. Fore femur yellow; [mid legs beyond coxa missing]; hind femur yellow, black apically, all femora with recumbent black hairs on dark portions, yellow tomentum on yellow portions. Fore tibia with orange tibial pecten apically. Tibial spurs black. Fore basitarsus 1.2 x length of fore tibia. Mid and hind basitarsi subequal in length to lengths of respective tibiae. Claws minute.

Wing ( Fig. 25 ). Subhyaline anteriorly along costal margin, becoming more clear posteriorly; vein R4 straight, ending in C slightly beyond end of R1; veins M2, CuA1, and A1 not reaching wing margin.

Abdomen. Tergite I black, with dense recumbent black hairs; tergites II–IV orange basally, black apically, with yellow tomentum on orange portions, black tomentum on black portions; tergites V–VIII black, black tomentum laterally, dense dorsally. Sternum patterned as on tergites.

Hypopygium. Not dissected. Gonocoxites and gonostyli brown, densely stiff intermixed yellow and black pilose, apex with two dark black teeth.

FEMALE. Unknown.

Types

Holotype ♂ (BPBM 16,592) from: MALAYSIA [Borneo]: Sabah: Forest Camp, 19 km N. Kalabakan, 60 m, 12 Nov 1962, K.J. Kuncheria.

Etymology

This species is named for the sea­serpent goddess, Jata , worshiped by Borneo tribes as the co­creator of the Universe. It is treated here as a noun in apposition.

Figures

FIGURES 20 – 26. Isoneuromyia wings, showing apical patterning. 20. I. splendida, n. sp. 21. I. subapicalis, n. sp. 22. I. nigribasis, n. sp. 23. I. glabra, n. sp. 24. I. nigerrima, n. sp. 25. I. jata, n. sp. 26. I. yorki, n. sp.