The structure of the reproductive system and certain peculiarities in formation of sex cells were studied at different stages of development of the dangerous quarantine pest Hyphantria cunea Drur y. Morphogenesis of the ...
First in the territory of the USSR Cotylotretus cubanicus A r t j u c h was found in Anas platyrhyncha L. and Aythya nyroca L. The development cycle of this trematode is not studied.