monograph of the Western Hemisphere bumblebees (Hymenoptera: Apidae; Bombinae).
Series: Memoirs of the Entomological Society of Canada -- no. 65, 82, 89, 91
Publisher: Entomological Society of Canada
Published: 1970
Place of publication: Ottawa
Language: eng
Subjects: Bumblebees -- Bibliography; Bumblebees
Table of contents: title: -Bibliography.-pt.1. The genera Bombus and Megabombus subgenus Bombias.-pt.2. The genus Megabombus. Subgenus Megabombus.-pt.3. The genus Pyrobombus; subgenus Cullumanobombus.