Plagiostenopterina Hendel, 2017

Roy, Sankarsan, Parui, Panchanan & Mitra, Bulganin, 2017, Plagiostenopterina sagarensis sp. nov. (Diptera: Platystomatidae: Platystomatinae) from Sunderban Biosphere Reserve, India with a key to Indian species, Zootaxa 4294 (4), pp. 487-493 : 492

Key to the Indian species of genus Plagiostenopterina Hendel

1. Arista bare, apex lobule shaped in male; thorax and abdomen entirely brown to shining black................................................................................................ Plagiostenopterina aenea (Wiedemann)

- Arista pubescent at base................................................................................2

2. Underside of hind tarsi with dense golden yellow pubescence...................................................3

- Hind tarsi without golden yellow pubescence................................................................4

3. Ground colour of abdomen black with basal half yellowish green and yellow pubescence, rest part blue-violet with dark brown pubescence; femora black with grey pubescence............................. Plagiostenopterina interrupta (Enderlein)

- Ground colour of abdomen black with dark violet tinge with microscopic yellowish grey hairs; femora brownish yellow except a blackish streak on underside of hind pair............................... Plagiostenopterina flavofemorata (Brunetti)

4. Abdomen black; third, fourth and fifth terga with basal stripes of whitish hairs........ Plagiostenopterina angusta Enderlein

- Abdominal coloration quite different......................................................................5

5. Wing with R-m and Dm- cu cross vein infuscated; thorax and scutellum dark brown; abdomen yellowish brown................................................................................. Plagiostenopterina sagarensis sp. nov.

- Wing with R-m and Dm- cu cross vein not infuscated; thorax reddish brown, shoulder and scutellum red; abdomen shining dark blue violet.............................................................. Plagiostenopterina teres Hendel