Ectemnius scaber is a species of square-headed wasp in the family Crabronidae. It is found in North America.
Subspecies These two subspecies belong to the species Ectemnius scaber: Ectemnius scaber rufescens Krombein, 1954 Ectemnius scaber scaber (Lepeletier de Saint Fargeau & Brullé, 1835)
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