M. S.  Engel, ?Revision of the bee genus Chlerogella (Hymenoptera, Halictidae), Part I: Central American species?, ZooKeys, vol. 23, 2009.

M. S.  Engel, ?Revision of the Bee Genus Chlerogella (Hymenoptera, Halictidae), Part II: South American Species and Generic Diagnosis?, ZooKeys, vol. 47, 2010.