What characteristic helps distinguish *B. citrinus* from *B. bimaculatus* (Two-spotted Bumblebee)?
Answer
*B. bimaculatus* typically has two distinct black spots on its yellow thorax
While *B. citrinus* can parasitize *B. bimaculatus*, the Two-spotted Bumblebee is generally identifiable by the presence of two specific black spots on its yellow thorax, a feature *B. citrinus* usually lacks.
Related Questions
What reliable physical feature is absent in the female Lemon Cuckoo Bumblebee due to its parasitic lifestyle?What is characteristic of the thorax segment of the female *B. citrinus*?What is the typical abdomen pattern for a female Lemon Cuckoo Bumblebee?Compared to its social relatives, how does the Lemon Cuckoo Bumblebee's tongue length differ?What is the typical size range (length) noted for the female Lemon Cuckoo Bumblebee queen?How does the facial hair density of the Lemon Cuckoo queen compare to *Bombus impatiens*?In which geographic region is the distribution of the Lemon Cuckoo Bumblebee primarily concentrated?What characteristic helps distinguish *B. citrinus* from *B. bimaculatus* (Two-spotted Bumblebee)?Why might a Lemon Cuckoo queen be one of the first bumblebee queens observed early in the spring?What is the conservation status noted for the Lemon Cuckoo Bumblebee in Vermont?