Some aspects of the behavior and biology of Sennius bondari (Pic, 1929) are evaluated on the host plant Senna macranthera (Collad.) Irwin & Barn., recorded for the first time. The study was conducted on infested seeds collected in Curitiba, Paraná State. Usually eggs were deposited on the seed margin. During larval development, the cotyledons and testa are partially consumed. The pupal chamber is built inside the seed. The life cycle lasted about 140 days, with females depositing eggs from day 8 until 73. Total fecundity was slightly over 47 eggs per female, and 83% of them were viable. Adult and larval/pupal mortality was high at 60%. This may be attributed to low humidity in the lab.
Biology; damaged seeds; host plant; insects
