Key to Gonatocerus from the Hawaiian Islands, with Notes on the Species (Hymenoptera: Mymaridae)

Abstract

The 11 species of Gonatocerus (Mymaridae) in the Hawaiian Islands are reviewed and an identification key is given. The Hawaiian fauna consists so far entirely of introduced species, apparently all from the Nearctic region, though further intensive collecting may yield additional species. All of the species occur on one of the islands, Oahu, and at least seven occur on each of Hawaii, Kauai, and Molokai. Most of the species were first collected since the 1960s. Members of the sulphuripes and ater groups are identified to species but five species in the membraciphagus and litoralis groups cannot be named for certain, pending revisions of these groups for North America. The named species are: californicus Girault, capitatus Gahan, dolichocerus Ashmead, mexicanus Perkins, ornatus Gahan, and pygmaeus Girault.