These keys are being presented so that the information contained within them may be made available to interested parties. It should be remembered that they are provisional only and the information may be of a very preliminary nature. If your specimens do not key out thru these keys it may well be due to the fact that these keys cover a limited geographical range: Mexico and Central America. Alternately you may have a species which is either undescribed or outside of it's known range. Further information on Central American ants may be found at the following site which is a very good source of information regarding Costa Rica ants species.
Ants of Costa Rica

Keys



Atta