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Ambush Bugs
Phymata spp. and others in subfamily Phymatinae (ambush bugs)
Venomous
Angulate and Roundshouldered Orbweavers
Araneus spp.
Ants
More than 700 species in North America
Arrowhead Spider (Triangle Orbweaver)
Verrucosa arenata
Asian Lady Beetle
Harmonia axyridis
Assassin Bugs
Nearly 200 species in North America north of Mexico
Venomous
Backswimmers
About 32 North American species in the family Notonectidae
Bryozoans (Moss Animals)
Freshwater species in the phylum Bryozoa
Caddisflies
Various species in the order Trichoptera
Cellar Spiders
Pholcus, Psilochorus, and others in the Pholcid family
Common House Spider
Parasteatoda tepidariorum (syn. Achaeranea tepidariorum)
Daddy Longlegs (Harvestmen)
About 6,500 species have been named so far, worldwide.
Gilled Aquatic Snails (Prosobranch Pond Snails)
Over 20 Missouri species in former subclass Prosobranchia
Goldenrod Crab Spider
Misumena vatia
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
Lady Beetles (Ladybird Beetles; Ladybugs)
Nearly 500 species in North America north of Mexico
Leaf Beetles
About 2,000 species in North America
Leafcutter Bees
Species in the genus Megachile.
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
Lunged Aquatic Snails (Pulmonate Pond Snails)
Over 30 Missouri species in former subclass Pulmonata
Millipedes
More than 900 species in North America north of Mexico
Orchard Orbweaver
Leucauge venusta
Planthoppers
More than 900 species in North America north of Mexico
Ramshorn Snails
Gyraulus, Helisoma, Menetus, Micromenetus, Planorbula spp.
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
Soil Centipedes
There are many species of soil centipedes in our state.
Soldier Beetles
Nearly 500 species in North America north of Mexico
Spined Micrathena
Micrathena gracilis
Spiny Orbweavers (Micrathena Spiders)
Micrathena spp.
Spittlebugs and Froghoppers
About 60 species in North America north of Mexico
Spotted Orbweavers
Neoscona spp.
Sweat Bees
Numerous species and genera in Missouri
Ticks
Three common Missouri species.
Trashline Orbweavers
Cyclosa conica and C. turbinata
Treehoppers
More than 260 species in North America North of Mexico
Turbellarians (Planarians; Free-Living Flatworms)
Species in genera Dugesia, Planaria, etc.
Weevils (Snout Beetles; Bark Beetles)
About 2,500 species in North America north of Mexico
Whitebanded Crab Spider
Misumenoides formosipes
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