Opostega, Zeller, 1839

publication ID	https://doi.org/10.11646/zootaxa.5660.2.7
publication LSID	lsid:zoobank.org:pub:760BFD7E-4052-42B7-B442-0695C64DAA8E
DOI	https://doi.org/10.5281/zenodo.16760941
persistent identifier	https://treatment.plazi.org/id/AA51B55D-FFA7-5818-17DB-E8F4FA26F952
treatment provided by	Plazi
scientific name	Opostega
status

Key to species of Opostega View in CoL View at ENA in the Palaearctic and Oriental regions

1. Forewing with fascia formed by pale yellow scales ( Nieukerken 1990: 367)............................ O. salaciella

- Forewing without fascia............................................................................... 2

2. Forewing lacking costal and dorsal spot................................................................... 3

- Forewing with costal or dorsal spot....................................................................... 4

3. Forewing greyish brown ( Puplesis & Robinson 1999: 29)......................................... O. chalcophylla View in CoL

- Forewing dull white ( Davis 1989: 62)............................................................. O. afghani View in CoL

4. Forewing without costal spot ( Kozlov 1985: 51)................................................... O. cretatella View in CoL

- Forewing with costal spot.............................................................................. 5

5. Fringe of forewing with dark brown radial streaks........................................................... 6

- Fringe of forewing without streaks....................................................................... 7

6. Valva with finger-like process ( Kozlov 1985: 53).................................................. O. kuznetzovi View in CoL

- Valva without finger-like process ( Kozlov 1985: 51).............................................. O. stekolnikovi View in CoL

7. Tegumen-vinculum ring with a large semicircular sclerite................................. O. magnirotunda sp. nov.

- Tegumen-vinculum ring without semicircular sclerite........................................................ 8

8. Costal process of valva hook-shaped; aedeagus present.................................... O. apicidissecta sp. nov.

- Costal process of valva almost straight; aedeagus absent ( Nieukerken 1990: 368)........................ O. spatulella View in CoL