none Adults of three Nearctic coccinellid species, Coleomegilla maculata, Cycloneda munda , and Hippodamia convergens , and one Palearctic species, Coccinella septempunctata , were suitable hosts for the braconid parasitoid Dinocampus coccinellae. Mean parasitoid developmental times at 22°C ranged from 30 to 33.3 days, and the percent successful parasitization varied between 30 and 57%. Only 1.5% of D. coccinellae emerged from Propylea quatuordecimpunctata , a second Palearctic species found in North America since 1968; developmental times were significantly longer (x@u- = 37 days) compared with those for suitable hosts. No D. coccinellae successfully completed development in Hippodamia variegata , an exotic species recently discovered in Canada. These comparative studies provide a basis for examining the potential D. coccinellae -mediated interactions among invading and indigenous coccinellid species.