“On the Morphology of the Male Genitalia Fo Some Bombus Latr. (Hymenoptera Bombidae)”. Bollettino di zoologia agraria e bachicoltura 20 (October 11, 2024): 1–15. Accessed July 28, 2026. https://test-ojs-unimi-it.archicoop.it/index.php/bzab/article/view/26764.