a skim of water striders

a fluttering of moths

a rabble of butterflies

a cluster of grasshoppers

a plague of locusts

an army of ants

a siege of mosquitoes

a cloud of gnats

a grist of bees

a nest of hornets

a pladge of wasps

a colony of termites

a cluster of caterpillars

a clutch of spiders

a bite of midges

a tiding of ladybugs

a dance of mayflies

a blessing of beetles

a stink of earwigs

a bed of scorpions

a courtship of fireflies

a flight of dragonflies