1. Afzelius BA, Bellon PL, Lanzavecchia S (1990) Microtubules and their protofilaments in the flagellum of an insect spermatozoon. J Cell Sci 95:207–217
2. Baccetti B (1987a) Spermatozoa and stick insect phylogeny (The spermatozoon of Arthropoda, XXXIII). In: Mazzini M, Scali V(eds), 1st international symposium on stick-insects: phylogeny and reproduction. Centrooffset, Siena, pp. 117–123
3. Baccetti B (1987b) Spermatozoa and phylogeny in orthopteroid insects. In: Baccetti B (ed) Evolutionary biology of orthopteroid insects. Horwood, Chichester, pp 12–112
4. Baccetti B, Dallai R, Rosati F (1970) The spermatozoon of Arthropoda VII Plecoptera and Thricoptera. J Ultrastruct Res 31:212–228
5. Baccetti B, Burrini AG, Dallai R, Pallini V, Periti P, Piantelli F, Rosati F, Selmi G (1973) Structure and function in the spermatozoon of Bacillus rossius. The spermatozoon of Arthropoda. XIX. J Ultrastruct Res Suppl 12:5–73