Revisão do gênero Berecynthus Stal, 1862 (Heteroptera, Pentatomidae, Pentatomini)

The genus Berecynthus Stal, 1862 and B. delirator (Fabricius, 1787) are redescribed based on the external morphology, as well as on the morphological characteres of genitalia of both sexes. B. imitator Jensen-Haarup, 1937 is considered a synonym of B. delirator. B. monrosi Piran, 1963 is transferred to the genus Euschistus Dallas, 1851. A study of the genitalia of E. monrosi is added.