The spermatozoa of three genera of Protura are unconventional. Two of them, Acerentulus and Acerentomon, display hitherto undescribed axoneme patterns : ‘12+0’ in the former, ‘14+0’ in the latter. All the doublets are devoid of arms. The third genus, Eosentomon has a disk-shaped spermatozoon, devoid of tail. The presence of such unusual patterns is related to the non-motility of the spermatozoa.
- Received November 2, 1972.
- Revision received March 16, 1973.
- Copyright © 1971 The Company of Biologists Ltd.