Bombus pensylvanicus - Wikipedia

List of bumblebee species - Wikipedia

File:American Bumble Bee, female (Apidae, Bombus pensylvanicus (De

species) bombus auricomus - WY Field Guide

bumblebee - Wiktionary, the free dictionary

American Bumble Bee, Museum of Natural History

Bombus pensylvanicus - Wikipedia

List of bumblebee species - Wikipedia

Western bumble bee Washington Department of Fish & Wildlife, Bumble Bee

File:Bombus pensylvanicus male 1.jpg - Wikimedia Commons