On the genus Gastrodynerus Bohart, 1984 (Hymenoptera: Vespidae: Eumeninae).

The genus Gastrodynerus is here revised based on external morphology and male genitalia. Bohart (1984) proposed Gastrodynerus as a new genus with three species: G. vanduzeei (Bohart 1948), G.

An illustrated atlas for male genitalia of the New World Polistes Latreille, 1802 (Vespidae: Polistinae).

The male genitalia of 58 species of the New World Polistes are described: 29 of Polistes (Aphanilopterus), 12 of Polistes (Epicnemius), 13 of Polistes (Fuscopolistes), one of Polistes (Onerarius) and three of Polistes (Palisotius). Comments and remarks are also provided.