Abstract
Comparative reproduction was studied in sympatric populations of Agriphila plumbifimbriella Dyar and Crambus harpipterus Dyar at 2630 M elevation in the Jemez Mountains. Emergence from the pupa and mating are nocturnal events, with mating peaks possibly occurring at different times of night in the 2 species. Females of both species frequently mate twice. They oviposit maximally in mid afternoon in nature. Similar periodicity but increased oviposition occurs at 25°C and LD 14:10. Oviposition in darkness at 25°C in C. harpipterus , but not in A. plumbifimbriella , shows evidence of circadian control. Oviposition responsiveness to thoracic wounding is greater in C. harpipterus , which is twice as fecund as A. plumbifimbriella . Fore wing length is a better indicator of fecundity for C. harpipterus than for A. plumbifimbriella . Examination of reproductive tract morphology revealed basic similarities in the 2 species.
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