A dichotomic key of the males of Thoracobombus Dalla Torre, subgenus of Bombus Latreille, present in Italy. bzab [Internet]. 2024 Sep. 23 [cited 2026 Jul. 28];38(1):27-38. Available from: https://test-ojs-unimi-it.archicoop.it/index.php/bzab/article/view/26487