41. In " Bombus vestalis ", the fifth antennal segment will be the same length as the third and fourth together. 42. Primary Nectar robbing by " Bombus " species, including " Bombus occidentalis " is common in some populations. 43. Primary Nectar robbing by " Bombus " species, including " Bombus occidentalis " is common in some populations. 44. Greater use of native pollinators, such as " Bombus ignitus " in China and Japan, has occurred as a result. 45. The decline of its populations started with the introduction of " Bombus terrestris " and " B . terrestris ". 46. The " Bombus morio " display a specific type of behavior to release the pollen from the flowers called the buzz pollination. 47. This is a very effective method of dislodging the pollen, and helps the " Bombus morio " be very effective pollinators. 48. Insect species include the Arcitc bummblebee ( " Bombus polaris " ), the mosquito, the hoverfly and the black fly. 49. It is similar in appearance to " Bombus muscorum ", and is replacing the species in Northern Britain " ." 50. Together, the two organs work together to achieve homeostasis within the " Bombus morios " bodies despite the lack of rectal papillae.