Below are various keys to groups with Perdita and Macrotera that are either newly created by me, or annotated versions of Timberlake keys (most of the annotations have been done by Dr. Terry Griswold, Research Entomologist at the USDA-ARS). The newly created keys should be considered working drafts, so they may contain errors. If you have any questions about them, feel free to contact me. 

Perdita keys and other stuff

Annotated key to the species of subgenus Cockerellia from Timberlake (1954): [pdf]

Annotated key to the species of subgenus Epimacrotera: [pdf]

Annotated key to the species of subgenus Hexaperdita: [pdf]

Annotated key to the species of subgenus Pentaperdita: [pdf]

Key to the species of Perdita subgenus Perditella. 

Photo gallery of Perdita (Perdita) ventralis group males

Macrotera keys

Key to the species of Macrotera subgenus Macroteropsis. 

Key to the species of Macrotera subgenus Macroterella.
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