author(s)
VM Sakhare, DS Mutkule and VG Kharade

abstract
An experiment was conducted at Oilseed Research Station, Latur, Maharashtra, to “Studies on biology of groundnut bruchid, C. serratus (Olivier) on different groundnut varieties in storage condition” during 2017-18. Ten groundnut varieties were used for biology studies in which the lowest oviposition period of C. serratus 3.50 days was recorded on LGN-1. While the highest oviposition period (8.50 days) was observed on groundnut variety of JL-24. The shortest incubation period of C. serratus i.e. 4.00 days was observed on groundnut varieties RTNG-53 and TKG-BOLD whereas, highest incubation period of 6.25 days was observed in RHRG-1135 groundnut varieties. In case of larval emergence of C. serratus is less number of larvae emerged from JL-24 (69.75) while the highest number of C. serratus larvae emerged from RHRG-1135 (89.75). The longer larval duration of C. serratus 34.00 days was observed on TAG- 24 followed by JL-24 (33.00). While shorter larval duration was recorded in RHRG-1135 i.e. 24.75 days. The highest growth index was recorded on variety RTNG-53 (0.333). The lowest number larvae pupated was recorded in JL-24 (66.00). The highest number larvae pupated was observed in RHRG-1135 (85.25). The shortest pupal duration was observed on JL-24 (12.75 days). Longer pupal duration was recorded in TKG-BOLD (15.25). The lowest number of adults 57.75 emerged from JL-24 while the highest number of adults was recorded from RHRG-1135 (80.25). The highest longevity of adults C. serratus was recorded on TKG-BOLD (14.25 days). Whereas, lowest longevity adults were observed in JL-24 (12.75days).