Emergence patterns of the Subalpine Dragonfly Somatochlora Semicircularis (Odonata: Corduliidae)

by Ruth L. Willey
Published 1974-01-01

Visual and Acoustical Social Displays by the Grasshopper Arphia Conspersa (Orthoptera: Acrididae)

by Robert B. Willey, Ruth L. Willey
Published 1969-01-01

Barriers to Gene Flow in Natural Populations of Grasshoppers I. the Black Canyon of the Gunnison River and Arphia Conspersa.

by Robert B. Willey, Ruth L. Willey
Published 1967-01-01

Barriers to Gene Flow in Natural Populations of Grasshoppers II. Maintenance of Narrow Hybrid-Zones Between Morphs of Arphia Conspersa on Black Mesa, Colorado

by Robert B. Willey, Ruth L. Willey
Published 1971-01-01