Hymenoptera On-line DatabaseThe Hymenoptera On-Line site, in addition to providing information on classification, provides access to taxonomic literature, mapping, specimen data, images, biological associations, and links to other on-line resources such as GenBank and the USDA Plants Database. Knowledge of ant names is not required, as those can be pulled down (via this gateway). Climbing up (search the parent) and down (see the children) the taxonomic hierarchy is possible.