Stenomicra xoutha, Grimaldi, 2009

Grimaldi, David A., 2009, The Asteioinea of Fiji (Insecta: Diptera: Periscelididae, Asteiidae, Xenasteiidae), American Museum Novitates 3671, pp. 1-60 : 17

Stenomicra xoutha , new species

Figures 4 , 11

DIAGNOSIS: Frons whitish, pollinose; scutum and scutellum very light brown/dark ochre, lighter (yellow) between dorsocentrals; tergites I–IV light brown. Dorsal portion of pleura light brown. Pair of anterior frontoorbital setae minute, very light and barely detectable. Arista with 4 dorsal and 2 dorsal branches. Wing hyaline. Best distinguished from similar Stenomicra by male terminalia: cerci without pair of long, thick setae on ventroapical margins; aedeagus curved, apex brushlike; surstylus curved, apex acute, base broad and with dense, long setulae on inner margin.

TYPES: Holotype, male (dissected, no. 56), FIJI: Viti Levu : Naitasiri Prov., Nakobalevu Mt., FJ-4, 22.IX–9.X.02, 178 ° 259E, 18 ° 039S, rainforest, M. Irwin, E. Schlinger, M. Tokota’a, Malaise trap 340 m., FBA 013231. ThL 5 1.32 mm; wing W/L 5 0.40; L r-m / L between r-m and m-cu L r-m / L between r-m and m-cu 5 0.33. In BPBM.

In addition, there is a series of seven females that are tentatively being assigned to S. xoutha , on the basis of coloration, minute frontoorbitals, and aristal branches. Four females are from the type locality (Nakobalevu, 2 collected at 340 m, other 2 not specified: nos. FBA013232, 013233, 210864, 210865). A further two females are also from Viti Levu , Naitasiri Prov. : 1 female 3.2 km E Navsi Vlg., Veilaselase Track , 1020 m, 19.IV–14.V.2004, Malaise 2, Schlinger , Tokota’a, 17.624 ° S, 178.009 ° E, FBA 155656. 1 female: Naitasiri Prov., Eteni, Navai, Malaise trap, 6.VI–15.VII.2003, FJ-11B, 700 m, E. Schlinger, M. Irwin, M. Tokota’a, 177 ° 599E, 17 ° 379S, FBA013857 .

Lastly , there are two females from two other islands that are similar to the above females. 1 female: Vanua Levu , Bua Prov. , Batiqere Range, 6 km NW Kilaka Village, 98 m, 15– 24.VI.2004, Malaise 5, Schlinger and Tokota’a. 16.807 ° S, 178.991 ° E, FBA161196. 1 female: Taveuni, Cakadrove Prov. Devo Peak Radio Tower, Malaise in rainforest, 10.X–17.X.02, FJ-8, M. Irwin, E. Schlinger, M. Tokota’a, 179 ° 589E, 16 ° 519S, 1200 m, FBA018304 .

ETYMOLOGY: From the Greek, xouthos, meaning yellowish brown, in reference to the color of the scutum and scutellum.

Figures

Fig. 4. A–E: Terminal abdominal segments and syntergosternites of male Periscelididae (ventral views, not to same scale). A. Stenocyamops robustus. B. Stenocyamops luteus/pseudoluteus. C. Stenomicra distincta. D. Stenomicra distinctipennis. E. Stenomicra castanea. F–H: Thoraces (dorsal view) of select Fiji Stenomicra (to the same scale). F. S. brunnea. G. S. xoutha. H. S. sylpha.

Fig. 11. Male terminalia of Stenomicra xoutha. A. Left surstylus, lateral view. B. Aedeagus, lateral view. C. Ventral portions of cerci. D. Hypandrium, aedeagus, and associated structures. All to the same scale.