Life … Animals Arthropods Insects Hymenopterans Cuckoo Wasps Holopyga Holopyga ventralis species 19 observations Holopyga ventralis Holopyga ventralis Supported by All 14 native plantssupport it in the US Nectar plants Plants whose flowers it visits Common Cowparsnip, Blue Phlox, Flowering Spurge, Allegheny Monkeyflower 14 Close