Keys and Bibliography to the Collembola
Family Palpigeridae Olfers, 1907 (Fossil Collembola)
Family Palpigeridae Olfers, 1907 (Fossil Collembola)
1. | Ants. I—III annulated; Abd. IV longer than Abd. III; body elongate, cylindrical | Palpigerina. Olfers, 1907 (805) |
Antennae not annulated | 2 | |
2. | Abd. IV longer than Abd. III; Ant II with sharp, apical spine | Palpiger Olfers, 1907 (805) |
Abdominal segments approximately equal and swollen, being wider than the thorax | Palpigerida Olfers, 1907 (805) |