Robuta

https://www.beesofromania.ro/wild-bee-photo-gallery/megachilidae/chelostoma-rapunculi-lepeletier-1841 Bees of Romania - Chelostoma rapunculi (Lepeletier, 1841) bees romania chelostoma https://journals.ku.edu/melittology/article/view/11760?articlesBySameAuthorPage=4 On the classification of North American Chelostoma (Hymenoptera: Megachilidae) | Journal of... on the north american classification chelostoma hymenoptera