Mauling-behavior
Guides
Bombus citrinus
lemon cuckoo bumblebee
Bombus citrinus is a cuckoo bumblebee native to eastern North America, recognized by its lemon-yellow coloration. As an obligate social parasite, it invades colonies of other bumblebees, kills the resident queen, and assumes control of the host worker population. It belongs to the subgenus Psithyrus, a group of parasitic bumblebees that have lost the ability to collect pollen and rear their own workers.
Vespula infernalis
cuckoo yellowjacket, American cuckoo yellowjacket
Vespula infernalis is an obligate social parasite (inquiline) that invades and usurps colonies of other yellowjacket species, primarily Vespula acadica in North America. Unlike most parasitic wasps, it exhibits intensely aggressive behavior during colony takeover, using specialized morphological adaptations including a large, heavily curved stinger to subdue host workers. The species lacks a worker caste and cannot build nests or rear its own young, instead forcing host workers to feed and care for its brood through dominance behaviors including mauling and forced trophallaxis.
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