Collective Nouns - Insects and Arachnids

Insects & Arachnids
Species	Collective Term (most usual first)
Ants	Colony, Army
Bees	Swarm, Grist, Hive
Butterflies	Kaleidoscope, Swarm, Rabble
Caterpillars	Army
Flies	Swarm, Business
Gnats	Swarm, Cloud, Horde
Grasshoppers	Cluster
Locusts	Plague
Spiders	Clutter