Fine structure of the spermatozoon of the sandflySergentomyia minuta(Diptera, Psychodidae)

Abstract

Spermatozoa of Sergentomyia minuta were examined by light, scanning, and transmission electron microscopy. They were seen to be formed by a head and a tail. The head was characterized by an acrosomal complex with a thin space containing granular material organized as in a perforatorium. The tail contained a “9 + 9 + 0”; axoneme and one mitochondrial derivative. A comparison with the spermatozoon ultrastructure of other Diptera, particularly Psychodidae, is discussed.