The main characteristics of the sperm structure of Hexapoda are reported in the review. Data
are dealing with the process of spermatogenesis, including the aberrant models giving rise …

The genera Centris and Epicharis constitute the Centridini and are widely distributed in the
Neotropical region. Centris is also found in the southern portion of the Neartic region …

Recent studies based on morphological and molecular data provide a new perspective
concerning taxonomic aspects of the brachyuran family Mithracidae. These studies …

In the seminal vesicle of the 'symphyta'Arge pagana the spermatozoa are stored in motile
spermatodesm bundles, maintained by an anterior cap of extracellular material. This cap …

The spermatozoa of Solenopsis invicta are long and slender, measuring about 70μm in
length, of which the head region measures approximately 13μm. The head consists of an …

In spite of their importance in the reproduction of phanerograms, few bees have received an
adequate description of their sperm ultrastructure. In this study, we concluded that it was …

The male reproductive system of Eurydema ventrale Kolenati 1846 is studied
morphologically and histologically by using light, scanning and transmission electron …

In the present study testicular and spermatogenetic aspects were described for Lagria
villosa using light and scanning electron microscopy. In this species, spermiogenesis results …

Euglossine spermatozoa are the longest described to date for the Hymenoptera. This cell
includes a head and a flagellar region. In transverse sections, the acrosome is circular at the …

The present research represents the first description of a Vespidae species spermatozoon.
In Agelaia vicina, the sperm head is composed of an acrosome and a nucleus. The …