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Ambush Bugs
Phymata spp. and others in subfamily Phymatinae (ambush bugs)
Venomous
Aphids
More than 1,300 species in North America north of Mexico
Aquatic Pillbugs and Sowbugs (Aquatic Isopods)
Freshwater members of the crustacean order Isopoda
Arrowhead Spider (Triangle Orbweaver)
Verrucosa arenata
Cellar Spiders
Pholcus, Psilochorus, and others in the Pholcid family
Click Beetles
Approximately 1,000 species in North America
Daddy Longlegs (Harvestmen)
About 6,500 species have been named so far, worldwide.
Filmy Dome Spider
Neriene radiata (formerly Prolinyphia marginata)
Foliage Flower Spiders
Mecaphesa spp. and Misumessus spp.
Freshwater Jellyfish
Craspedacusta sowerbii (syn. C. sowerbyi)
Gilled Aquatic Snails (Prosobranch Pond Snails)
Over 20 Missouri species in former subclass Prosobranchia
Goldenrod Crab Spider
Misumena vatia
Green Crab Spider
Misumessus oblongus (formerly Misumenops oblonga)
Ground Crab Spiders
Xysticus spp.
Heptagonal Orbweaver
Gea heptagon
Hydras
Various species in the genus Hydra
Ichneumon Wasps
More than 5,000 species in North America
Lace Bugs
About 165 species in North American north of Mexico
Lady Beetles (Ladybird Beetles; Ladybugs)
Nearly 500 species in North America north of Mexico
Land Snails and Slugs
Approx. 150 species of land snails and slugs in Missouri
Leaf Beetles
About 2,000 species in North America
Leafhoppers
More than 3,000 species in North America north of Mexico
Longhorned Beetles (Borers; Sawyer Beetles)
About 1,000 species in North America north of Mexico
Marbled Orbweaver
Araneus marmoreus
Mosquito Larvae
There are about 50 species of mosquitoes in our state.
Mosquitoes
About 50 species of mosquitoes in Missouri
Moth Flies
Members of subfamily Psychodinae
Northern Crab Spider
Mecaphesa asperata
Openfield Orbweaver
Araneus pratensis
Orchard Orbweaver
Leucauge venusta
Peacock Flies (Tephritid Fruit Flies)
About 300 species in North America north of Mexico
Scarab Beetles
About 1,700 species in North America north of Mexico
Scuds and Sideswimmers (Amphipods)
Species in the crustacean order Amphipoda
Silverfish (Firebrat)
Lepisma saccharina, Thermobia domestica, and other species
Spined Micrathena
Micrathena gracilis
Spiny Orbweavers (Micrathena Spiders)
Micrathena spp.
Spittlebugs and Froghoppers
About 60 species in North America north of Mexico
Springtails
More than 8,000 species globally
Swift Crab Spider
Mecaphesa celer (formerly Misumenops celer)
Treehoppers
More than 260 species in North America North of Mexico
Turbellarians (Planarians; Free-Living Flatworms)
Species in genera Dugesia, Planaria, etc.
Whitebanded Crab Spider
Misumenoides formosipes
Zebra Mussel
Dreissena polymorpha
Invasive
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