The term `` eusocial '' was introduced in NUMBER@1 by PERSON@1 , S. W. T. NUMBER@1 : Nests and social behavior of halictine bees of LOCATION@1 -LRB- Hymenoptera : Halictidae -RRB- .

The term `` eusocial '' was introduced in NUMBER@1 by PERSON@2 . PERSON@3 , S. W. T. NUMBER@1 : Nests and social behavior of halictine bees of LOCATION@1 -LRB- Hymenoptera : Halictidae -RRB- .
