How many species of social bees and wasps are there in Southeastern Pennsylvania?

There are about a fifteen species you are likely to come across. Apis mellifera is the honeybee. Bombus impatiens, B. griseocollis, B. bimaculatus, and B. perplexus are common bumblebees. Dolichovespula maculata, D. arenaria, Vespa crabro, Vespula germanica, V. maculifrons, V. flavopilosa, V. squamosa, and V. vidua are the hornets and yellowjackets. Polistes dominula, and P. fuscatus are the common umbrella wasps.