Key to the fossil species of Dryinus constans group

Females (males unknown)

1. Notauli complete; fore wing crossed by 2 dark transverse bands.................................... D. pristinus Olmi

- Notauli incomplete; fore wing with a dark spot or crossed by 2 dark transverse bands............................... 2

2. Fore wing with 1 dark spot.................................................................. D. priscus Olmi

- Fore wing crossed by 2 dark transverse bands............................................................... 3

3. Enlarged claw with a long row of lamellae (Fig. 4 A); pronotal tubercle not reaching tegula................................................................................................. D. palaeodominicanus Currado & Olmi

- Enlarged claw without lamellae (Fig. 2 B); pronotal tubercle reaching tegula..................... D. alamellatus sp. nov.