Campanula-specialist
Guides
Chelostoma campanularum
Small Scissor Bee, Harebell Carpenter Bee
Chelostoma campanularum is a small solitary bee in the family Megachilidae. It is a pollen specialist strongly associated with Campanula (bellflower) species. The species is notable for its distinctive pollen-collecting behavior using abdominal scopae rather than leg scopae, and for nesting in hollow plant stems.
Chelostoma rapunculi
Rampion Scissor Bee
Chelostoma rapunculi is a solitary bee in the subgenus Gyrodromella (family Megachilidae), commonly known as the Rampion Scissor Bee. It is an oligolectic species specialized on Campanula host plants, though females occasionally visit non-host plants including Geranium sanguineum and Malva moschata. Nesting occurs in preexisting linear cavities in dead wood or hollow stems, with cells partitioned using mud and pebbles. The species is native to the Palaearctic region and has been introduced to North America.