Résumé:
Depending to the few and old data which have been conducted on the body morphology of Brachytrupes
megacephalus Lefebvre, 1827 (Orthoptera, Gryllidae), we have investigated the structure of male
genitalia in Algerian Sahara species to establish a basis for morphological study. The study was
conducted in the laboratory of entomology in the experimental station of Sidi Mehdi.
After isolation of the male genital apparatus, we find that its structure is consisted by the testis, accessory
gland, ejaculatory duct and the phallic complex. The last organ is composed of epiphalus, guiding rod,
ectoparamere, endoparamere, dorsal and median pouch. The spermatophore produced by Brachytrupes
megacephalus was investigated in detail. Besides the study of the spermatophore size (8 mm),
morphology, and formation, spermatophore is composed of the ampulla (3.9 mm), attachment plate (2.8
mm) and the tube (1.5 mm). The present paper aims to improve this information, on the species of B.
megacephalus.
