J. T.  Longino, ?The Crematogaster (Hymenoptera, Formicidae, Myrmicinae) of Costa Rica?, Zootaxa, vol. 151, pp. 1-150, 2003.

H. W.  Herrera and Longino, J. T., ?New records of introduced ants (Hymenoptera; Formicidae) in the Galapagos Islands?, Galapagos Research, vol. 65, pp. 16-19, 2008.