Isoneuromyia wolongensis Xu, Cao et Evenhuis

Xu, Huachao, Cao, Jian, Wu, Hong, Evenhuis, Neal L. & Zhou, Zuji, 2007, Four new species of Isoneuromyia from China (Diptera: Keroplatidae), Zootaxa 1423, pp. 51-57 : 56-57

Isoneuromyia wolongensis Xu, Cao et Evenhuis , n. sp.

( Figs. 4, 8 , 13 )

Diagnosis. Closest to I. singula , n. sp. but can be distinguished from it by the gonostyli having two dark teeth (only one in singula ).

Description. MALE. Lengths: Body: 8.5 mm; wing: 5.6mm.

Head. Vertex and occiput black, with fairly dense small black recumbent hairs. Ocelli in horizontal line. Frons light brown, bare. Antennae: scape and pedicel cup-shaped, brownish black. Flagellum: segments slightly compressed, brownish black. Face light brown, with small black hairs apicolaterally. Palpi brown. Proboscis yellowish brown.

Thorax. Mesonotum ( Fig. 4 ) black, pruinose with brown bristles. Scutellum black. Patch of thick black setae above wing root and on posterior margin of scutellum. Prescutellar area tapering to scutellum. Pronotal lobes black with dense black setae. Pleura, laterotergite and mediotergite brownish black, bare. Halter yellow.

Legs. Fore coxa brownish, mid and hind coxae with brown spot at base; fore coxa, and apex of mid and hind coxa, with recumbent black hairs. Fore and mid femora brownish black at base, remainder of them yellow; hind femur brown, all with recumbent black hairs. Fore tibia without comb, mid with only posterior comb, hind tibiae with anterior and posterior comb. Tibial spurs black. Fore and mid basitarsus subequal in length to lengths of respective tibiae, hind basitarsus 0.9x length of hind tibia. Claws minute.

Wing ( Fig. 8 ). Hyaline, with brown infuscation subapically from costa to middle of cell r5, fading posteriorly; vein R4 straight, ending in C slightly beyond end of R1; veins M2, CuA1 and A1 not reaching wing margin.

Abdomen. Tergites I–II black; tergites III–VI brownish black with white spots basolaterally; tergites V– VII brownish black, tergite VIII brown, all tergites with dense recumbent black hairs. Sternites patterned as on tergites.

Hypopygium ( Fig. 13 ). Not dissected. Gonocoxites brownish, black pilose on about apical half. Gonostyli brown, black pilose, apex with two dark teeth, two minute dark sclerotized tooth in between large darkly sclerotized teeth.

FEMALE. Unknown.

Types. Holotype ɗ (ZJFC 060200) and paratype ɗ from: China: Sichuan province: Wolong National Natural Reserve, 21 July 2006, Jian Cao.

Etymology. The species epithet derives from the place name Wolong, referring to the type locality of the species.

Figures

FIGURES 1 – 8. 1 – 4. Isoneuromyia thoraces, dorsal view. 1. I. sinica, n. sp. 2. I. completa, n. sp. 3. I. singula, n. sp. 4. I. wolongensis, n. sp. 5 – 8 Isoneuromyia wings. 5. I. sinica, n. sp. 6. I. completa, n. sp. 7. I. singula, n. sp. 8. I. wolongensis, n. sp.

FIGURES 9 – 13. Isoneuromyia male genitalia. 9. I. sinica, n. sp. ventral view (cerci and proctiger omitted). 10. I. completa, n. sp. ventral view (cerci and proctiger omitted). 11. I. singula, n. sp. ventral view (cerci and proctiger omitted). 12. I. singula, n. sp. lateral view (gonostyli omitted) 13. I. wolongensis, n. sp. ventral view (cerci and proctiger omitted). Scale bar = 0.1 mm.