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Has keys and brief discussions for the 12 cephid species known from North America in 1969, with emphasis on California species.
Note that what Middlekauff treated as
Cephus clavatus is currently recognized as
Calameuta clavata...a genus Middlekauff did not include in his treatment. Another nearctic species of
Calameuta was published in 2005, and a key to both species appears in Smith & Schiff
(1).