The small species of Belostoma (Heteroptera, Belostomatidae): I. Key to species groups and a revision of the denticolle group

ABSTRACT

A key to species groups of the genus Belostoma Latreille, 1807, using new taxonomic characters are presented as well as the revision of the four species included in the denticolle group B. denticolle Montandon, 1903, and three new species B. orbiculatum from eastern Argentina and southern Brazil, B. retusum from eastern Argentina and B. amazonum from northern Brazil which are described and illustrated.