|Bee flies were active near the bee nesting sites |
resting on the ground
During the first week of May when temperatures reached 70 F, there was an increase in nest excavation activity, especially in the sites on the exposed south-facing slopes where soil temperatures were likely warmer.
|Females were shy and would back |
down the nest entrances a few inches but if you waited
long enough, they would come closer to the surface.
|Aggregation of nests on sandy slope|
|Female in Eastern Red Cedar tree|
Batra, S. W. T. (1980). Ecology, behavior, pheromones, parasites and management of the sympatric vernal bees Colletes inaequalis, C. thoracicus and C. validus. Journal of the Kansas Entomological Society, 509-538.