Chonopeltis australis (Crustacea: Branchiura); the female reproductive system.

The female reproductive system has been described for Dolops ranarum (Stuhlman, 1891) and various Argulus spp. but, there is no description of the reproductive system for Dipteropeltis spp. Calman, 1912 or Chonopeltis spp.

Chonopeltis australis (Crustacea) male reproductive system morphology; sperm transfer and review of reproduction in Branchiura.

The morphology of the male reproductive system as well as sperm transfer in Branchiura has been described for Dolops ranarum and Argulus japonicus. In this study, the reproductive system and accessory structures are described for male Chonopeltis australis using histology, light microscopy, and scanning electron microscopy. For the first time, we describe sperm transfer by means of a spermatophore in this genus.

Additional morphological information on Dipteropeltis hirundo Calman, 1912, and a description of Dipteropeltis campanaformis n. sp. (Crustacea: Branchiura) from two characiform benthopelagic fish hosts from two Northern rivers of the Brazilian Amazon.

Dipteropeltis is a monotypic genus of the Branchiura and endemic to South America. Twelve specimens of Dipteropeltis sp. and micrographs of a thirteenth specimen were obtained from four institutions.