Besbicus is a genus of gall-inducing cynipid wasp found in North America.

[1] Several species now classed as Besbicus were formerly considered to be a part of the genus Cynips.

[2][3] Besbicus was originally described as a subgenus by Alfred Kinsey in 1929.

[4] Circa 2010, one group of entomologists noted that it was "possible that the nearctic genera Antron and Besbicus were erroneously synonymized to Cynips".

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