Sitka bumble bee

Bombus sitkensis, the Sitka bumblebee, is a species of bumblebee common in western North America from Alaska to California. Description The Sitka bumblebee has an oblong head with a medium-length proboscis. The females (queens and workers) have black and yellow hairs intermixed on the face and forward part of the thorax and a black patch in the middle of the thorax, while their sides are yellowish.

Aucune description en français n’est encore disponible.

Bombus bifarius es una especie de abejorro eusocial del subgénero Pyrobombus. ​ B. bifarius habita en regiones montañosas del oeste de Norteamérica.