Sex-ratio-manipulation
Guides
Dinarmus
Dinarmus is a genus of chalcidoid wasps in the family Pteromalidae with nearly cosmopolitan distribution. Species in this genus are larval-pupal ectoparasitoids of bruchid beetles (Chrysomelidae: Bruchinae), particularly pests of stored legume seeds such as cowpea. The genus includes economically important biological control agents, notably D. basalis and D. vagabundus, which are deployed in integrated pest management programs targeting Callosobruchus species. Research on D. basalis has revealed complex host discrimination behaviors, facultative superparasitism, and olfactory host location mechanisms.
Oncideres
Twig Girdling Beetles, Twig Girdlers
Oncideres is a genus of longhorn beetles (Cerambycidae: Lamiinae) containing over 120 species distributed throughout the Nearctic and Neotropics. These beetles are commonly known as twig girdlers due to the distinctive behavior of females chewing around branches to cause them to break and fall. The larvae develop within the girdled, decomposing wood. Several species are economically significant pests of fruit trees, pecans, and forest trees, while others play roles in ecosystem engineering by altering host plant population structure.