Morphological elements far a key to subgenera of Bombus Latreille s.l. and Psithyrus Lepeletier s.l. present in Italy (Hymenoptera Apidae Bombinae). bzab [Internet]. 2024 Dec. 2 [cited 2026 Jul. 28];29(1):1-43. Available from: https://test-ojs-unimi-it.archicoop.it/index.php/bzab/article/view/27387