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- Black Flies (their larvae are aquatic)
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- Example of a Giant Casemaker Caddisfly (Oligostomis ocelligera) (Orono, ME; 5/19/2022) (Photo credit: courtesy of Edward S. Grew)
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- Damselfly
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- Deer Fly (their larvae are aquatic)
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- Deer Flies (additional examples)
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Dobsonfly larva
(also called a Hellgrammite)
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- Dobsonflies (their larvae are aquatic)
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- A male dobsonfly; Orono, ME (07/17/2018).
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- Ventral view of the specimen shown at left
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- Male dobsonfly
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- Female dobsonfly
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- Dragonflies (the nymphs are aquatic)
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- Autumn Meadowhawk (dragonfly)
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- Fawn Darner (dragonfly) (Boyeria vinosa) (Etna, ME; 5/19/2022)
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- Drain Fly (found around sewage or other wet areas)
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- Fishfly adult (their larvae are aquatic)
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- Fishfly adult (July 16th, 2016; central Maine)
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- Fishfly adult (July 16th, 2016; central Maine)
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- Fishfly adult
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- Giant Water Bug (“Toe-biter”)
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- Giant Water Bug (“Toe-biter”)
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- Giant Water Bug (“Toe-biter”)
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- Giant Water Bug (“Toe-biter”)
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- Giant Water Bug (“Toe-biter”)
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- Horse Fly
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- Horse Fly
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- Mayflies (the immatures are aquatic)
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- Mayfly
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- Mayfly
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- Mosquito larvae
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- Mosquito Larvae
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- Mosquito
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- Mosquito
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- Mosquito (Ochlerotatus canadensis)
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- Predaceous Diving Beetle
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Predaceous
Diving Beetles
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- Predaceous Diving Beetle inside a standard-sized tea/coffee cup.
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- Predaceous Diving Beetle
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- Predaceous Diving Beetle
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- Stonefly (adult) (the immatures/nymphs are aquatic)
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- Stonefly (adult)
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- Small Winter Stoneflies (Old Town, Maine; 3/11/2022) (possibly Allocapnia recta) (Photo credit: courtesy of Edward S. Grew)
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- Water Scorpion
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- Water Scorpion
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- Water Scorpion
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- Water Striders
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- Water Striders on Mount Desert Island (August, 2010)
