31. The flowers bear poricidal anthers and are fertilized via buzz-pollination by several " Bombus " species. 32. "Bombus frigidus " also seem to be able to transfer heat from the thorax to the abdomen. 33. Only a few species reside in the southernregions, and one those is the " Bombus morio ." 34. The " Bombus " morio make their nests in the neotropical regions on the surface of the ground. 35. In North America, pathogens are possibly having a stronger negative effect especially for the subgenus " Bombus ". 36. Interestingly, " Bombus pratorum " queens use aggressive behavior rather than pheromones to maintain dominance over the workers. 37. They are hermaphrodite and pollinated by insects ( entomophily ), especially bumblebees ( " Bombus " species ). 38. However, many other species of bees, including bumblebees, such as " Bombus terrestris ", are monandrous. 39. This is evolutionarily relevant because " Bombus vestalis " does not make its own nests or collect its own resources. 40. The second and third are named " Bombus Globus " ( bomb ball ) and " Frango Stipes " ( Breaking clubs ).
