Caddisfly larva
Daphnia
Looks like Simocephalus in Cladocera:
The rear end of an aquatic isopod. Most likely family Asellidae. Maybe genus Caecidotea:
Snipe fly, Rhagionidae:
Microdon manitobensis, the first sighting in Massachusetts, the first sighting in New England!
Opiliones:
Microrhopala vittata, Goldenrod leaf miner beetle.
Mayfly
Ant and aphid
Great golden digger wasp, Sphex ichneumoneus
Bombylius incanus
Cicindelididia punctulata
Camouflaged looper, the caterpillar of the Synchlora aerata, in Geometridae:
Say’s trig?
Pompilid + Callobius spider
Toxomerus geminatus
Zygoballus rufipes
Sepsis cf punctum
These were actually acorn ants, I think (https://www.antwiki.org/wiki/Temnothorax_curvispinosus)
Dolomedes tenebrosus
Pisaurina mira
Perhaps Pelegrina?
a little wild 