[2] It is classified as endangered due to the impacts of pesticides, climate change, and human development.

[1] Crotch's bumble bee is characterized as a short- or medium- tongue length species.

[1] Crotch's bumble bee is extant but uncommon in Baja California, Mexico,[1] and into Nevada.

[8] Due to the role of bumble bees as pollinators, monarch butterflies benefit from this situation.

[8] Due to the wide range of host plants visited by Crotch's bumble bee, it is characterized as a dietary generalist.

[6][7] Crotch's bumble bee is a state endangered species that was last evaluated by IUCN in April 2014.

[9] Regions within the Crotch's bumble bee range have experienced urbanization and intensive agriculture, events that are thought to have contributed to the decline of the species.

Moreover, the toxicity to bumble bees from these types of pesticides lasts for several months, meaning the negative impacts can be observed over the long-term.

[10][7] A petition was submitted by the Xerces society, Defenders of Wildlife, and the Center for Food Safety to the California Fish and Game Commission in October 2018 to list Crotch's bumble bee and three others as endangered under the California Endangered Species Act.

[13] A subsequent legal challenge of the CESA's definition of a fish as "a wild fish, mollusk, crustacean, invertebrate, amphibian, or part, spawn, or ovum of any of those animals"[13] was eventually overruled, because the explicit intent was for all invertebrates (therefore including insects) to be qualified for protection under this legal definition.