Sennius leptophyllicola sp. nov. is described from Paraná, Brazil and reported to feed in seeds of Cassia leptophylla Vogel with Pygiopachymerus lineola (Chevrolat, 1871). Both species attach their eggs to the outside of the fruit valves of the host. Their oviposition behavior places them in oviposition guild A of JOHNSON (1981). Eggs were described based upon scanning electron micrographs.
Bruchidae; oviposilion behavior; egg morphology; taxonomy