A Synopsis of the Chrysidid Genera of Neotropical America (Chrysidoidea, Hymenoptera)

Cleptes, Mesitiopterus, Microsega, Muesebeckidium, Pseudolopy- ga, Minymischa, Xerochrum, Microchridium, Hedychreides, Chry- sura, and Chrysurissa are not reported from South or Central America. A number of genera are not found north of Costa Rica, including Duckeia, Nesogyne and Gaullea. Trichrysis and Neo- chrysis have undergone extensive species radiation in the neotropics. The few species in these two genera occurring in North America are their northernmost representatives. The faunas of Baja California, north central and northwestern Mexico seem to be essentially temperate in origin. The genera Parnopes, Spintharosoma and Ceratochrysis belong to this temper- ate fauna and are considered in this survey because they are found in Mexico. Several of the genera found only in the southwestern United States may be present in Baja California, Sonora and Chihuahua, Mexico, so specimens from this region should probably be run through the key to the North American genera (Bohart and Kimsey, 1980). The chrysidid fauna of the Caribbean islands, excluding Trinidad and Tobago, appears to be primarily temperate in origin, with only one endemic genus, Nesogyne.