Metasomal-horn
Guides
Odontacolus
Odontacolus is a genus of tiny parasitoid wasps in the family Platygastridae, characterized by a distinctive laterally compressed metasomal horn in females. The genus was redefined in 2013 to include Cyphacolus as a junior synonym, expanding the group to encompass species from Africa, Asia, Australia, and the Pacific. All known species are parasitoids of spider eggs, using a specialized ovipositor system to inject eggs into host egg sacs. Species range from 1 to 2.5 mm in length.