superparasitism

noun

su·​per·​par·​a·​sit·​ism ˌsü-pər-ˈper-ə-ˌsī-ˌti-zəm 

-sə-ˌti-,

-ˈpa-rə-

: parasitization of a host by more than one parasitic individual usually of one kind

—used especially of parasitic insects

Word History

First Known Use

circa 1899, in the meaning defined above