Dragonfly nymphs (order Odonata, suborder Anisoptera)

Darner dragonfly nymphs (Aeshnidae)Spiketail dragonfly nymphs (Cordulegastridae)Skimmer dragonfly nymphs (Libellulidae)Emerald dragonfly nymphs (Corduliidae)Clubtail dragonfly nymphs (Gomphidae)

Contained families:
Aeshnidae (Darner dragonflies)
Cordulegastridae (Spiketail dragonflies)
Libellulidae (Skimmer dragonflies)
Corduliidae (Emerald dragonflies)
Gomphidae (Clubtail dragonflies)

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Damselfly nymphs (order Odonata, suborder Zygoptera)

Narrow-winged damselfly nymphs (Coenagrionidae)White-legged damselfly nymphs (Platycnemididae)Spread-winged damselfly nymphs (Lestidae)Broad-winged damselfly nymphs (Calopterygidae)

Contained families:
Coenagrionidae (Narrow-winged damselflies)
Platycnemididae (White-legged damselflies)
Lestidae (Spread-winged damselflies)
Calopterygidae (Broad-winged damselflies)

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Caddisfly larvae (order Trichoptera)

Case-building caddisfly larvae (Trichoptera)Net-spinning caddisfly larvae (Trichoptera, Hydropsychidae)Tube-making and Trumpet-net caddisfly larvae (Trichoptera, Polycentropodidae)Free-living caddisfly larvae (Trichoptera, Rhyacophilidae)Microcaddisfly larvae (Trichoptera, Hydroptilidae)

Contained families:
Limnephilidae (Case-building caddisfly larvae)
Leptoceridae (Case-building caddisfly larvae)
Phryganeidae (Case-building caddisfly larvae)
Brachycentridae (Case-building caddisfly larvae)
Odontoceridae (Case-building caddisfly larvae)
Sericostomatidae (Case-building caddisfly larvae)
Hydropsychidae (Net-spinning caddisfly larvae)
Polycentropodidae (Tube-making and Trumpet-net caddisfly larvae)
Rhyacophilidae (Free-living caddisfly larvae)
Hydroptilidae (Microcaddisfly larvae)

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Mayfly nymphs (order Ephemeroptera)

Flathead mayfly nymphs (Ephemeroptera, Heptageniidae)Minnow mayfly nymphs (Ephemeroptera, Baetidae)Primitive minnow mayflies (Ephemeroptera, Siphlonuridae)Hacklegill mayfly nymphs (Ephemeroptera, Potamanthidae)Prong-gilled mayfly nymphs (Ephemeroptera, Leptophlebiidae)Burrowing mayfly nymphs (Ephemeroptera, Ephemeridae)

Contained families:
Heptageniidae (Flathead mayflies)
Baetidae (Minnow mayflies)
Siphlonuridae (Primitive minnow mayflies)
Potamanthidae (Hacklegill mayflies)
Leptophlebiidae (Prong-gilled mayflies)
Ephemeridae (Common burrowing mayflies)

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True bugs (order Hemiptera)

Water scorpions (Nepa cinerea)Needle bugs or water stick insects (Ranatra linearis)Backswimmers (Notonectidae)Water boatmen (Corixidae)Saucer bugs or creeping water bugs (Naucoridae)Water striders or pond skaters (Gerridae)Water measurers (Hydrometridae)

Contained families:
Nepidae (water scorpions, needle bugs or water stick insects)
Notonectidae (backswimmers)
Corixidae (water boatmen)
Naucoridae (saucer bug or creeping water bug)
Gerridae (water striders or pond skaters)
Hydrometridae (water measurers)

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Water beetles (order Coleoptera)

Diving beetle larvae and adults (Dytiscidae)Water scavenger beetle larvae and adults (Hydrophilidae)Crawling water beetles (Haliplidae)Whirligig beetles (Gyrinidae)Riffle beetle larvae and adults (Elmidae)

Contained families:
Dytiscidae (Diving beetles)
Hydrophilidae (Water scavenger beetles)
Haliplidae (Crawling water beetles)
Gyrinidae (Whirligig beetles)
Scirtidae (Marsh beetles)
Elmidae (Riffle beetles)

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True flies, Midges, Mosquitoes (order Diptera)

Mosquito larvae, pupae and emerging (Culicidae)Black fly larvae and pupae (Simuliidae)Phantom midges (Chaoboridae)Non-biting midges (Chironomidae)

Contained families:
Culicidae (Mosquitoes)
Simuliidae (Black flies)
Chaoboridae (Phantom midges)
Chironomidae (Non-biting midges)

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Stonefly nymphs, Alderfly larvae, Spongillafly larvae, Aquatic moth larvae

Stonefly nymphs (Plecoptera)Alderfly larvae (Megaloptera)Spongillafly larvae (Sisyridae)Aquatic moth larvae (Lepidoptera, Crambidae)

Contained orders:
Plecoptera (Stoneflies)
Megaloptera (Alderflies)
Neuroptera (Spongillaflies)
Lepidoptera (Aquatic moths)

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