Key to the Genera of the Catastylidae (Fossil Collembola)
1. |
Scales present; Ants. III and IV annulated |
Cuculliger Olfers, 1907 (805) |
|
Scales absent |
2 |
2. |
Abd. IV with two spines and Abd. V with two long cerci |
Catastylus Olfers, 1907 (805) |
|
Abd. V with either a spine or long setae |
3 |
3. |
Abd. V with two long cerci bearing basal papillae, and one long median upturned spine |
Polystylus Olfers, 1907 (805) |
|
Abd. V on posterior border and Abd. VI on each side with a short papilla bearing a long seta |
Omophora Olfers, 1907 (805) |