There are 185 insects that start with the letter S, from Sabre Moth to Swollen-Thighed Beetle. Below you will find them listed alphabetically along with some general information about each. Click the toggle view buttons in the top right corner to switch between the card and the table view.
For each item you will find the following information
Order: The subclass the insects belongs to
Habitat: The places or type of weather the insects lives in
Scientific name: The designation that scientists use to catalog the species
Name: Sabre Moth
Order: Lepidoptera
Habitat: Woodlands
Scientific name: Lobeza sabre
Name: Sabre-Tailed Wasp
Order: Hymenoptera
Habitat: Forests
Scientific name: Trirogma caerulea
Name: Saddle-Backed Caterpillar
Order: Lepidoptera
Habitat: Deciduous Forests
Scientific name: Acharia stimulea
Name: Saharan Dung Beetle
Order: Coleoptera
Habitat: Arid regions
Scientific name: Scarabaeus sacer
Name: Saharan Silver Moth
Order: Lepidoptera
Habitat: Desert
Scientific name: Leucanella sahariensis
Name: Sairy Moth
Order: Lepidoptera
Habitat: Tropical forests
Scientific name: Antiora sairy
Name: Salmon Moth
Order: Lepidoptera
Habitat: Coniferous forests
Scientific name: Poecilocampa alpina
Name: Saltmarsh Caterpillar Moth
Order: Lepidoptera
Habitat: Coastal marshes
Scientific name: Estigmene acrea
Name: Samia Moth
Order: Lepidoptera
Habitat: Woodland
Scientific name: Samia cynthia
Name: Sand Ant
Order: Hymenoptera
Habitat: Deserts
Scientific name: Messor barbarus
Name: Sand Cockroach
Order: Blattodea
Habitat: Desert regions
Scientific name: Arenivaga spp.
Name: Sand Dune Beetle
Order: Coleoptera
Habitat: Coastal Dunes
Scientific name: Eurynebria complanata
Name: Sand Roach
Order: Blattodea
Habitat: Desert
Scientific name: Arenivaga investigata
Name: Sand Tiger Beetle
Order: Coleoptera
Habitat: Sandy areas
Scientific name: Cicindela formosa
Name: Sand Treader
Order: Orthoptera
Habitat: Deserts
Scientific name: Oliarces clara
Name: Sand Wasp
Order: Hymenoptera
Habitat: Grasslands
Scientific name: Bembix spp.
Name: Sanddragon
Order: Odonata
Habitat: Coastal regions
Scientific name: Progomphus spp.
Name: Sandfly
Order: Diptera
Habitat: Aquatic
Scientific name: Phlebotomus spp.
Name: Sandhill Crane Fly
Order: Diptera
Habitat: Grassland
Scientific name: Tipula abdominalis
Name: Sandhopper
Order: Amphipoda
Habitat: Coastal sand
Scientific name: Talitrus saltator
Name: Sandragon
Order: Odonata
Habitat: Deserts
Scientific name: Erythrodiplax berenice
Name: Sandy-Backed Grasshopper
Order: Orthoptera
Habitat: Dry grasslands
Scientific name: Trimerotropis pallidipennis
Name: Santa Cruz Island Jerusalem Cricket
Order: Orthoptera
Habitat: Islands off California
Scientific name: Stenopelmatus santacruzensis
Name: Sap Beetle
Order: Coleoptera
Habitat: Decaying Organic Matter
Scientific name: Nitidulidae spp.
Name: Sapsucking Leafhopper
Order: Hemiptera
Habitat: Woodland
Scientific name: Graphocephala coccinea
Name: Sarus Crane Fly
Order: Diptera
Habitat: Wetland
Scientific name: Pedicia albivitta
Name: Sassafras Swallowtail
Order: Lepidoptera
Habitat: Deciduous Forests
Scientific name: Papilio troilus
Name: Satin Moth
Order: Lepidoptera
Habitat: Deciduous forests
Scientific name: Leucoma salicis
Name: Sawfly
Order: Hymenoptera
Habitat: Diverse habitats
Scientific name: Symphyta
Name: Sawgrass Moth
Order: Lepidoptera
Habitat: Wetland
Scientific name: Brenthia pavonacella
Name: Sawtooth Grain Beetle
Order: Coleoptera
Habitat: Stored grains
Scientific name: Oryzaephilus surinamensis
Name: Sawyer Ant
Order: Hymenoptera
Habitat: Woodland Habitats
Scientific name: Camponotus spp.
Name: Sawyer Beetle
Order: Coleoptera
Habitat: Coniferous Forests
Scientific name: Prionus spp.
Name: Scale Insect
Order: Hemiptera
Habitat: Various
Scientific name: Coccidae spp.
Name: Scaleskin Beetle
Order: Coleoptera
Habitat: Coastal Regions
Scientific name: Thanatophilus spp.
Name: Scarab Beetle
Order: Coleoptera
Habitat: Soil, decaying matter
Scientific name: Scarabaeidae
Name: Scorpion Beetle
Order: Coleoptera
Habitat: Tropical Forests
Scientific name: Scorpiorhinotermitidae
Name: Scorpion Fly
Order: Mecoptera
Habitat: Woodlands
Scientific name: Panorpidae
Name: Scotch Argus Butterfly
Order: Lepidoptera
Habitat: Grassland
Scientific name: Erebia aethiops
Name: Scuttle Fly
Order: Diptera
Habitat: Variety
Scientific name: Phoridae
Name: Scythrid Moth
Order: Lepidoptera
Habitat: Grasslands
Scientific name: Scythris spp.
Name: Seashore Beetle
Order: Coleoptera
Habitat: Coastal
Scientific name: Bledius spp.
Name: Seed Bug
Order: Hemiptera
Habitat: Grasslands
Scientific name: Lygaeus spp.
Name: Seed Corn Maggot
Order: Diptera
Habitat: Agricultural Fields
Scientific name: Delia platura
Name: Seed Weevil
Order: Coleoptera
Habitat: Legume plants
Scientific name: Bruchus spp.
Name: Serene Cicada
Order: Hemiptera
Habitat: Deciduous Forests
Scientific name: Okanagana spp.
Name: Serrated Bark Beetle
Order: Coleoptera
Habitat: Coniferous forests
Scientific name: Dendroctonus ponderosae
Name: Shaggy Bark Beetle
Order: Coleoptera
Habitat: Forests
Scientific name: Trichodes apiarius
Name: Shamrock Moth
Order: Lepidoptera
Habitat: Woodland Habitats
Scientific name: Euclidia glyphica
Name: Sharpshooter
Order: Hemiptera
Habitat: Wide range
Scientific name: Cicadellidae spp.
Name: Sharpshooter Leafhopper
Order: Hemiptera
Habitat: Various
Scientific name: Homalodisca vitripennis
Name: Sheep Ked
Order: Diptera
Habitat: Livestock
Scientific name: Melophagus ovinus
Name: Sheep Keds
Order: Diptera
Habitat: Living on sheep
Scientific name: Melophagus ovinus
Name: Sheep Louse
Order: Phthiraptera
Habitat: On sheep
Scientific name: Bovicola ovis
Name: Sheep Tick
Order: Acari
Habitat: Grasslands
Scientific name: Ixodes spp.
Name: Shieldbug
Order: Hemiptera
Habitat: Various
Scientific name: Pentatomidae spp.
Name: Shiny Flea Beetle
Order: Coleoptera
Habitat: Various
Scientific name: Altica chalybea
Name: Shiny Fungus Beetle
Order: Coleoptera
Habitat: Forests
Scientific name: Scaphidium spp.
Name: Shiny Parasitic Wasp
Order: Hymenoptera
Habitat: Various Habitats
Scientific name: Chalcididae spp.
Name: Shipworm
Order: Bivalvia
Habitat: Marine
Scientific name: Teredo spp.
Name: Shore Bug
Order: Hemiptera
Habitat: Coastal Habitats
Scientific name: Saldidae spp.
Name: Shore Crab
Order: Decapoda
Habitat: Coastal
Scientific name: Carcinus maenas
Name: Short-Tailed Cricket
Order: Orthoptera
Habitat: Wide range
Scientific name: Anurogryllus spp.
Name: Short-Tailed Shrew
Order: Soricomorpha
Habitat: Woodland
Scientific name: Blarina brevicauda
Name: Shorttail Cricket
Order: Orthoptera
Habitat: Grassland
Scientific name: Anurogryllus muticus
Name: Shot Hole Borer
Order: Coleoptera
Habitat: Deciduous Forests
Scientific name: Scolytus spp.
Name: Showy Milkweed Bug
Order: Hemiptera
Habitat: Milkweed habitats
Scientific name: Oncopeltus fasciatus
Name: Shrimp Bug
Order: Hemiptera
Habitat: Aquatic
Scientific name: Ranatra spp.
Name: Side-Striped Cockroach
Order: Blattodea
Habitat: Woodland
Scientific name: Parcoblatta lata
Name: Silk Gnat
Order: Diptera
Habitat: Forests
Scientific name: Lycoriella spp.
Name: Silk Moth
Order: Lepidoptera
Habitat: Deciduous Forests
Scientific name: Antheraea spp.
Name: Silkworm Moth
Order: Lepidoptera
Habitat: Cultivated
Scientific name: Bombyx mori
Name: Silver Arches Moth
Order: Lepidoptera
Habitat: Woodland
Scientific name: Parascotia fuliginaria
Name: Silver-Spotted Skipper
Order: Lepidoptera
Habitat: Meadows
Scientific name: Epargyreus clarus
Name: Silver-Spotted Tiger Moth
Order: Lepidoptera
Habitat: Meadows
Scientific name: Lophocampa argentata
Name: Silverback Moth
Order: Lepidoptera
Habitat: Tropical Forests
Scientific name: Dysgonia spp.
Name: Silverfish
Order: Thysanura
Habitat: Damp environments
Scientific name: Lepismatidae
Name: Silverspot Skipper
Order: Lepidoptera
Habitat: Meadows
Scientific name: Speyeria spp.
Name: Silvery Bluetail
Order: Odonata
Habitat: Ponds
Scientific name: Ischnura elegans
Name: Six-Spotted Mite
Order: Acari
Habitat: Leaf litter
Scientific name: Eustigmaeus spp.
Name: Skiff Moth
Order: Lepidoptera
Habitat: Woodlands
Scientific name: Carthaea saturnioides
Name: Skimmer Dragonfly
Order: Odonata
Habitat: Ponds and lakes
Scientific name: Libellula spp.
Name: Skipper Butterfly
Order: Lepidoptera
Habitat: Various
Scientific name: Hesperiidae
Name: Slash Pine Looper
Order: Lepidoptera
Habitat: Pine forests
Scientific name: Iridopsis ephyraria
Name: Slender Ant
Order: Hymenoptera
Habitat: Tropical Forests
Scientific name: Pseudomyrmex spp.
Name: Slender Crab Spider
Order: Araneae
Habitat: Various
Scientific name: Thanatus striatus
Name: Slender Scorpion
Order: Scorpiones
Habitat: Deserts
Scientific name: Vaejovis spp.
Name: Slender Snout Moth
Order: Lepidoptera
Habitat: Deciduous forests
Scientific name: Pyrausta aurata
Name: Slender Walkingstick
Order: Phasmatodea
Habitat: Forests
Scientific name: Haplopus spp.
Name: Slider Beetle
Order: Coleoptera
Habitat: Aquatic Habitats
Scientific name: Helophorus spp.
Name: Slinky Beetle
Order: Coleoptera
Habitat: Rotting Wood
Scientific name: Staphylinidae spp.
Name: Slug Caterpillar Moth
Order: Lepidoptera
Habitat: Woodland
Scientific name: Limacodidae
Name: Slug Moth
Order: Lepidoptera
Habitat: Deciduous Forests
Scientific name: Natada spp.
Name: Small Copper Butterfly
Order: Lepidoptera
Habitat: Meadows
Scientific name: Lycaena phlaeas
Name: Small Green Stink Bug
Order: Hemiptera
Habitat: Deciduous Forests
Scientific name: Acrosternum hilare
Name: Small Hive Beetle
Order: Coleoptera
Habitat: Beehives
Scientific name: Aethina tumida
Name: Small Milkweed Bug
Order: Hemiptera
Habitat: Milkweed plants
Scientific name: Lygaeus kalmii
Name: Small Tortoiseshell
Order: Lepidoptera
Habitat: Various
Scientific name: Aglais urticae
Name: Snail-Eating Ground Beetle
Order: Coleoptera
Habitat: Woodland
Scientific name: Carabus coriaceus
Name: Snail-Killing Firefly
Order: Coleoptera
Habitat: Moist forests
Scientific name: Dripaterus spp.
Name: Snakefly
Order: Raphidioptera
Habitat: Forests
Scientific name: Raphidia spp.
Name: Snipe Fly
Order: Diptera
Habitat: Damp Habitats
Scientific name: Rhagionidae spp.
Name: Snout Moth
Order: Lepidoptera
Habitat: Various Habitats
Scientific name: Pyralidae spp.
Name: Snowball Caterpillar
Order: Lepidoptera
Habitat: Deciduous forests
Scientific name: Eurukuttarus confederata
Name: Social Spider
Order: Araneae
Habitat: Tropical Forests
Scientific name: Anelosimus spp.
Name: Sod Webworm
Order: Lepidoptera
Habitat: Lawns
Scientific name: Crambidae
Name: Sod Webworm Moth
Order: Lepidoptera
Habitat: Grassland
Scientific name: Crambus spp.
Name: Soft Tick
Order: Acari
Habitat: Livestock
Scientific name: Ornithodoros spp.
Name: Soft-Winged Flower Beetle
Order: Coleoptera
Habitat: Flowers
Scientific name: Melyridae spp.
Name: Soldier Beetle
Order: Coleoptera
Habitat: Flowers
Scientific name: Cantharidae
Name: Soldier Fly
Order: Diptera
Habitat: Wetlands
Scientific name: Stratiomyidae
Name: Soldierfly
Order: Diptera
Habitat: Aquatic Habitats
Scientific name: Stratiomyidae spp.
Name: Sorghum Midge
Order: Diptera
Habitat: Sorghum fields
Scientific name: Contarinia sorghicola
Name: Sorghum Shoot Fly
Order: Diptera
Habitat: Crop
Scientific name: Atherigona soccata
Name: Southern Pine Beetle
Order: Coleoptera
Habitat: Pine Forests
Scientific name: Dendroctonus frontalis
Name: Southwestern Corn Borer
Order: Lepidoptera
Habitat: Crop
Scientific name: Diatraea grandiosella
Name: Sowbug
Order: Isopoda
Habitat: Variety
Scientific name: Oniscidea
Name: Soybean Aphid
Order: Hemiptera
Habitat: Soybean fields
Scientific name: Aphis glycines
Name: Soybean Stem Borer
Order: Coleoptera
Habitat: Soybean fields
Scientific name: Dectes texanus
Name: Spadefoot Toad
Order: Anura
Habitat: Deserts
Scientific name: Pelobatidae
Name: Sparkley Wing Moth
Order: Lepidoptera
Habitat: Forests
Scientific name: Schizura spp.
Name: Sparkly Hopper
Order: Hemiptera
Habitat: Grasslands
Scientific name: Dictyophara spp.
Name: Spearwing Dragonfly
Order: Odonata
Habitat: Ponds
Scientific name: Coenagrion puella
Name: Speckled Ground Cricket
Order: Orthoptera
Habitat: Grasslands
Scientific name: Nemobius griseus
Name: Speckled Moth
Order: Lepidoptera
Habitat: Woodlands
Scientific name: Trichoplusia ni
Name: Speckled Wood Butterfly
Order: Lepidoptera
Habitat: Woodland
Scientific name: Pararge aegeria
Name: Sphinx Moth
Order: Lepidoptera
Habitat: Diverse habitats
Scientific name: Sphingidae
Name: Spicebush Swallowtail
Order: Lepidoptera
Habitat: Deciduous Forests
Scientific name: Papilio troilus
Name: Spider Beetle
Order: Coleoptera
Habitat: Wide range
Scientific name: Ptinidae spp.
Name: Spider Wasp
Order: Hymenoptera
Habitat: Various
Scientific name: Pompilidae
Name: Spined Assassin Bug
Order: Hemiptera
Habitat: Wooded Habitats
Scientific name: Sinea spp.
Name: Spinner Ant
Order: Hymenoptera
Habitat: Tropical Forests
Scientific name: Polyrhachis spp.
Name: Spinner Moth
Order: Lepidoptera
Habitat: Forests
Scientific name: Brahmaea spp.
Name: Spiny Ant
Order: Hymenoptera
Habitat: Tropical Forests
Scientific name: Polyrhachis spp.
Name: Spiny Flower Mantis
Order: Mantodea
Habitat: Tropical Forests
Scientific name: Pseudocreobotra spp.
Name: Spiny Spider
Order: Araneae
Habitat: Various habitats
Scientific name: Gasteracantha spp.
Name: Spittle Bug
Order: Hemiptera
Habitat: Grasslands
Scientific name: Cercopidae spp.
Name: Spittlebug
Order: Hemiptera
Habitat: Grasslands
Scientific name: Cercopidae spp.
Name: Spot-Winged Glider
Order: Odonata
Habitat: Wetlands
Scientific name: Pantala flavescens
Name: Spotted Alfalfa Aphid
Order: Hemiptera
Habitat: Agricultural
Scientific name: Therioaphis maculata
Name: Spotted Cucumber Beetle
Order: Coleoptera
Habitat: Gardens/crops
Scientific name: Diabrotica undecimpunctata
Name: Spotted Lanternfly
Order: Hemiptera
Habitat: Deciduous Forests
Scientific name: Lycorma delicatula
Name: Spotted Pine Sawyer
Order: Coleoptera
Habitat: Pine forests
Scientific name: Monochamus spp.
Name: Spotted Rove Beetle
Order: Coleoptera
Habitat: Diverse Habitats
Scientific name: Paederus spp.
Name: Spring Azure Butterfly
Order: Lepidoptera
Habitat: Woodlands
Scientific name: Celastrina ladon
Name: Springtail
Order: Collembola
Habitat: Wide range
Scientific name: Entomobryomorpha spp.
Name: Spruce Beetle
Order: Coleoptera
Habitat: Coniferous Forests
Scientific name: Dendroctonus rufipennis
Name: Spruce Budworm
Order: Lepidoptera
Habitat: Coniferous Forests
Scientific name: Choristoneura fumiferana
Name: Spurred Crab Spider
Order: Araneae
Habitat: Various Habitats
Scientific name: Misumena spp.
Name: Squash Bug
Order: Hemiptera
Habitat: Agricultural Fields
Scientific name: Anasa tristis
Name: Squash Vine Borer
Order: Lepidoptera
Habitat: Cucurbit crops
Scientific name: Melittia cucurbitae
Name: Stag Beetle
Order: Coleoptera
Habitat: Forests
Scientific name: Lucanidae
Name: Stalk-Eyed Fly
Order: Diptera
Habitat: Tropical Forests
Scientific name: Diopsidae
Name: Stalked-Eyed Fly
Order: Diptera
Habitat: Tropical Forests
Scientific name: Diopsidae spp.
Name: Steel-Blue Cricket Hunter
Order: Hymenoptera
Habitat: Grasslands
Scientific name: Chlorion aerarium
Name: Steely Blue Beetle
Order: Coleoptera
Habitat: Diverse Habitats
Scientific name: Chrysolina spp.
Name: Stick Insect
Order: Phasmatodea
Habitat: Vegetation
Scientific name: Phasmatidae
Name: Stilt Bug
Order: Hemiptera
Habitat: Wetlands
Scientific name: Berytidae spp.
Name: Stink Ant
Order: Hymenoptera
Habitat: Tropical Forests
Scientific name: Pachycondyla spp.
Name: Stink Bug
Order: Hemiptera
Habitat: Diverse habitats
Scientific name: Pentatomidae
Name: Stone Centipede
Order: Scolopendromorpha
Habitat: Diverse Habitats
Scientific name: Scolopocryptops spp.
Name: Stone Fly
Order: Plecoptera
Habitat: Near water
Scientific name: Plecoptera
Name: Stonefly
Order: Plecoptera
Habitat: Aquatic
Scientific name: Plecoptera
Name: Straight-Margined Caddisfly
Order: Trichoptera
Habitat: Aquatic
Scientific name: Mystacides azurea
Name: Straw Sedge Moth
Order: Lepidoptera
Habitat: Wetlands
Scientific name: Chilo spp.
Name: Strawberry Bud Weevil
Order: Coleoptera
Habitat: Crop
Scientific name: Anthonomus signatus
Name: Strawberry Spider
Order: Araneae
Habitat: Strawberry plants
Scientific name: Araneidae
Name: Striped Beetle
Order: Coleoptera
Habitat: Diverse Habitats
Scientific name: Graphoderus spp.
Name: Striped Blister Beetle
Order: Coleoptera
Habitat: Agricultural
Scientific name: Epicauta vittata
Name: Striped Ground Cricket
Order: Orthoptera
Habitat: Grasslands
Scientific name: Nemobius spp.
Name: Striped Pine Borer
Order: Coleoptera
Habitat: Coniferous Forests
Scientific name: Monochamus spp.
Name: Sugar Glider
Order: Phasmatodea
Habitat: Deciduous Forests
Scientific name: Petauroides volans
Name: Sugar Maple Borer
Order: Coleoptera
Habitat: Deciduous Forests
Scientific name: Glycobius speciosus
Name: Sulfur Butterfly
Order: Lepidoptera
Habitat: Open areas
Scientific name: Pieridae
Name: Sulfur Moth
Order: Lepidoptera
Habitat: Woodland
Scientific name: Rhodinia fugax
Name: Sunflower Head Moth
Order: Lepidoptera
Habitat: Agricultural Fields
Scientific name: Homoeoosoma electellum
Name: Swallow-Tailed Butterfly
Order: Lepidoptera
Habitat: Woodland
Scientific name: Papilio machaon
Name: Swallow-Tailed Moth
Order: Lepidoptera
Habitat: Forests
Scientific name: Ourapteryx sambucaria
Name: Swallowtail Butterfly
Order: Lepidoptera
Habitat: Various habitats
Scientific name: Papilionidae
Name: Swamp Cicada
Order: Hemiptera
Habitat: Wetlands
Scientific name: Neotibicen tibicen
Name: Swamp Darter
Order: Odonata
Habitat: Wetlands
Scientific name: Sympetrum spp.
Name: Swamp Milkweed Leaf Beetle
Order: Coleoptera
Habitat: Wetlands
Scientific name: Labidomera clivicollis
Name: Sweat Bee
Order: Hymenoptera
Habitat: Wide range
Scientific name: Halictidae spp.
Name: Sweet Potato Stem Borer
Order: Lepidoptera
Habitat: Agricultural Fields
Scientific name: Omphisa anastomosalis
Name: Swollen-Thighed Beetle
Order: Coleoptera
Habitat: Forests
Scientific name: Mordellistena spp.
| Name | Order | Habitat | Scientific name |
|---|---|---|---|
| Sabre Moth | Lepidoptera | Woodlands | Lobeza sabre |
| Sabre-Tailed Wasp | Hymenoptera | Forests | Trirogma caerulea |
| Saddle-Backed Caterpillar | Lepidoptera | Deciduous Forests | Acharia stimulea |
| Saharan Dung Beetle | Coleoptera | Arid regions | Scarabaeus sacer |
| Saharan Silver Moth | Lepidoptera | Desert | Leucanella sahariensis |
| Sairy Moth | Lepidoptera | Tropical forests | Antiora sairy |
| Salmon Moth | Lepidoptera | Coniferous forests | Poecilocampa alpina |
| Saltmarsh Caterpillar Moth | Lepidoptera | Coastal marshes | Estigmene acrea |
| Samia Moth | Lepidoptera | Woodland | Samia cynthia |
| Sand Ant | Hymenoptera | Deserts | Messor barbarus |
| Sand Cockroach | Blattodea | Desert regions | Arenivaga spp. |
| Sand Dune Beetle | Coleoptera | Coastal Dunes | Eurynebria complanata |
| Sand Roach | Blattodea | Desert | Arenivaga investigata |
| Sand Tiger Beetle | Coleoptera | Sandy areas | Cicindela formosa |
| Sand Treader | Orthoptera | Deserts | Oliarces clara |
| Sand Wasp | Hymenoptera | Grasslands | Bembix spp. |
| Sanddragon | Odonata | Coastal regions | Progomphus spp. |
| Sandfly | Diptera | Aquatic | Phlebotomus spp. |
| Sandhill Crane Fly | Diptera | Grassland | Tipula abdominalis |
| Sandhopper | Amphipoda | Coastal sand | Talitrus saltator |
| Sandragon | Odonata | Deserts | Erythrodiplax berenice |
| Sandy-Backed Grasshopper | Orthoptera | Dry grasslands | Trimerotropis pallidipennis |
| Santa Cruz Island Jerusalem Cricket | Orthoptera | Islands off California | Stenopelmatus santacruzensis |
| Sap Beetle | Coleoptera | Decaying Organic Matter | Nitidulidae spp. |
| Sapsucking Leafhopper | Hemiptera | Woodland | Graphocephala coccinea |
| Sarus Crane Fly | Diptera | Wetland | Pedicia albivitta |
| Sassafras Swallowtail | Lepidoptera | Deciduous Forests | Papilio troilus |
| Satin Moth | Lepidoptera | Deciduous forests | Leucoma salicis |
| Sawfly | Hymenoptera | Diverse habitats | Symphyta |
| Sawgrass Moth | Lepidoptera | Wetland | Brenthia pavonacella |
| Sawtooth Grain Beetle | Coleoptera | Stored grains | Oryzaephilus surinamensis |
| Sawyer Ant | Hymenoptera | Woodland Habitats | Camponotus spp. |
| Sawyer Beetle | Coleoptera | Coniferous Forests | Prionus spp. |
| Scale Insect | Hemiptera | Various | Coccidae spp. |
| Scaleskin Beetle | Coleoptera | Coastal Regions | Thanatophilus spp. |
| Scarab Beetle | Coleoptera | Soil, decaying matter | Scarabaeidae |
| Scorpion Beetle | Coleoptera | Tropical Forests | Scorpiorhinotermitidae |
| Scorpion Fly | Mecoptera | Woodlands | Panorpidae |
| Scotch Argus Butterfly | Lepidoptera | Grassland | Erebia aethiops |
| Scuttle Fly | Diptera | Variety | Phoridae |
| Scythrid Moth | Lepidoptera | Grasslands | Scythris spp. |
| Seashore Beetle | Coleoptera | Coastal | Bledius spp. |
| Seed Bug | Hemiptera | Grasslands | Lygaeus spp. |
| Seed Corn Maggot | Diptera | Agricultural Fields | Delia platura |
| Seed Weevil | Coleoptera | Legume plants | Bruchus spp. |
| Serene Cicada | Hemiptera | Deciduous Forests | Okanagana spp. |
| Serrated Bark Beetle | Coleoptera | Coniferous forests | Dendroctonus ponderosae |
| Shaggy Bark Beetle | Coleoptera | Forests | Trichodes apiarius |
| Shamrock Moth | Lepidoptera | Woodland Habitats | Euclidia glyphica |
| Sharpshooter | Hemiptera | Wide range | Cicadellidae spp. |
| Sharpshooter Leafhopper | Hemiptera | Various | Homalodisca vitripennis |
| Sheep Ked | Diptera | Livestock | Melophagus ovinus |
| Sheep Keds | Diptera | Living on sheep | Melophagus ovinus |
| Sheep Louse | Phthiraptera | On sheep | Bovicola ovis |
| Sheep Tick | Acari | Grasslands | Ixodes spp. |
| Shieldbug | Hemiptera | Various | Pentatomidae spp. |
| Shiny Flea Beetle | Coleoptera | Various | Altica chalybea |
| Shiny Fungus Beetle | Coleoptera | Forests | Scaphidium spp. |
| Shiny Parasitic Wasp | Hymenoptera | Various Habitats | Chalcididae spp. |
| Shipworm | Bivalvia | Marine | Teredo spp. |
| Shore Bug | Hemiptera | Coastal Habitats | Saldidae spp. |
| Shore Crab | Decapoda | Coastal | Carcinus maenas |
| Short-Tailed Cricket | Orthoptera | Wide range | Anurogryllus spp. |
| Short-Tailed Shrew | Soricomorpha | Woodland | Blarina brevicauda |
| Shorttail Cricket | Orthoptera | Grassland | Anurogryllus muticus |
| Shot Hole Borer | Coleoptera | Deciduous Forests | Scolytus spp. |
| Showy Milkweed Bug | Hemiptera | Milkweed habitats | Oncopeltus fasciatus |
| Shrimp Bug | Hemiptera | Aquatic | Ranatra spp. |
| Side-Striped Cockroach | Blattodea | Woodland | Parcoblatta lata |
| Silk Gnat | Diptera | Forests | Lycoriella spp. |
| Silk Moth | Lepidoptera | Deciduous Forests | Antheraea spp. |
| Silkworm Moth | Lepidoptera | Cultivated | Bombyx mori |
| Silver Arches Moth | Lepidoptera | Woodland | Parascotia fuliginaria |
| Silver-Spotted Skipper | Lepidoptera | Meadows | Epargyreus clarus |
| Silver-Spotted Tiger Moth | Lepidoptera | Meadows | Lophocampa argentata |
| Silverback Moth | Lepidoptera | Tropical Forests | Dysgonia spp. |
| Silverfish | Thysanura | Damp environments | Lepismatidae |
| Silverspot Skipper | Lepidoptera | Meadows | Speyeria spp. |
| Silvery Bluetail | Odonata | Ponds | Ischnura elegans |
| Six-Spotted Mite | Acari | Leaf litter | Eustigmaeus spp. |
| Skiff Moth | Lepidoptera | Woodlands | Carthaea saturnioides |
| Skimmer Dragonfly | Odonata | Ponds and lakes | Libellula spp. |
| Skipper Butterfly | Lepidoptera | Various | Hesperiidae |
| Slash Pine Looper | Lepidoptera | Pine forests | Iridopsis ephyraria |
| Slender Ant | Hymenoptera | Tropical Forests | Pseudomyrmex spp. |
| Slender Crab Spider | Araneae | Various | Thanatus striatus |
| Slender Scorpion | Scorpiones | Deserts | Vaejovis spp. |
| Slender Snout Moth | Lepidoptera | Deciduous forests | Pyrausta aurata |
| Slender Walkingstick | Phasmatodea | Forests | Haplopus spp. |
| Slider Beetle | Coleoptera | Aquatic Habitats | Helophorus spp. |
| Slinky Beetle | Coleoptera | Rotting Wood | Staphylinidae spp. |
| Slug Caterpillar Moth | Lepidoptera | Woodland | Limacodidae |
| Slug Moth | Lepidoptera | Deciduous Forests | Natada spp. |
| Small Copper Butterfly | Lepidoptera | Meadows | Lycaena phlaeas |
| Small Green Stink Bug | Hemiptera | Deciduous Forests | Acrosternum hilare |
| Small Hive Beetle | Coleoptera | Beehives | Aethina tumida |
| Small Milkweed Bug | Hemiptera | Milkweed plants | Lygaeus kalmii |
| Small Tortoiseshell | Lepidoptera | Various | Aglais urticae |
| Snail-Eating Ground Beetle | Coleoptera | Woodland | Carabus coriaceus |
| Snail-Killing Firefly | Coleoptera | Moist forests | Dripaterus spp. |
| Snakefly | Raphidioptera | Forests | Raphidia spp. |
| Snipe Fly | Diptera | Damp Habitats | Rhagionidae spp. |
| Snout Moth | Lepidoptera | Various Habitats | Pyralidae spp. |
| Snowball Caterpillar | Lepidoptera | Deciduous forests | Eurukuttarus confederata |
| Social Spider | Araneae | Tropical Forests | Anelosimus spp. |
| Sod Webworm | Lepidoptera | Lawns | Crambidae |
| Sod Webworm Moth | Lepidoptera | Grassland | Crambus spp. |
| Soft Tick | Acari | Livestock | Ornithodoros spp. |
| Soft-Winged Flower Beetle | Coleoptera | Flowers | Melyridae spp. |
| Soldier Beetle | Coleoptera | Flowers | Cantharidae |
| Soldier Fly | Diptera | Wetlands | Stratiomyidae |
| Soldierfly | Diptera | Aquatic Habitats | Stratiomyidae spp. |
| Sorghum Midge | Diptera | Sorghum fields | Contarinia sorghicola |
| Sorghum Shoot Fly | Diptera | Crop | Atherigona soccata |
| Southern Pine Beetle | Coleoptera | Pine Forests | Dendroctonus frontalis |
| Southwestern Corn Borer | Lepidoptera | Crop | Diatraea grandiosella |
| Sowbug | Isopoda | Variety | Oniscidea |
| Soybean Aphid | Hemiptera | Soybean fields | Aphis glycines |
| Soybean Stem Borer | Coleoptera | Soybean fields | Dectes texanus |
| Spadefoot Toad | Anura | Deserts | Pelobatidae |
| Sparkley Wing Moth | Lepidoptera | Forests | Schizura spp. |
| Sparkly Hopper | Hemiptera | Grasslands | Dictyophara spp. |
| Spearwing Dragonfly | Odonata | Ponds | Coenagrion puella |
| Speckled Ground Cricket | Orthoptera | Grasslands | Nemobius griseus |
| Speckled Moth | Lepidoptera | Woodlands | Trichoplusia ni |
| Speckled Wood Butterfly | Lepidoptera | Woodland | Pararge aegeria |
| Sphinx Moth | Lepidoptera | Diverse habitats | Sphingidae |
| Spicebush Swallowtail | Lepidoptera | Deciduous Forests | Papilio troilus |
| Spider Beetle | Coleoptera | Wide range | Ptinidae spp. |
| Spider Wasp | Hymenoptera | Various | Pompilidae |
| Spined Assassin Bug | Hemiptera | Wooded Habitats | Sinea spp. |
| Spinner Ant | Hymenoptera | Tropical Forests | Polyrhachis spp. |
| Spinner Moth | Lepidoptera | Forests | Brahmaea spp. |
| Spiny Ant | Hymenoptera | Tropical Forests | Polyrhachis spp. |
| Spiny Flower Mantis | Mantodea | Tropical Forests | Pseudocreobotra spp. |
| Spiny Spider | Araneae | Various habitats | Gasteracantha spp. |
| Spittle Bug | Hemiptera | Grasslands | Cercopidae spp. |
| Spittlebug | Hemiptera | Grasslands | Cercopidae spp. |
| Spot-Winged Glider | Odonata | Wetlands | Pantala flavescens |
| Spotted Alfalfa Aphid | Hemiptera | Agricultural | Therioaphis maculata |
| Spotted Cucumber Beetle | Coleoptera | Gardens/crops | Diabrotica undecimpunctata |
| Spotted Lanternfly | Hemiptera | Deciduous Forests | Lycorma delicatula |
| Spotted Pine Sawyer | Coleoptera | Pine forests | Monochamus spp. |
| Spotted Rove Beetle | Coleoptera | Diverse Habitats | Paederus spp. |
| Spring Azure Butterfly | Lepidoptera | Woodlands | Celastrina ladon |
| Springtail | Collembola | Wide range | Entomobryomorpha spp. |
| Spruce Beetle | Coleoptera | Coniferous Forests | Dendroctonus rufipennis |
| Spruce Budworm | Lepidoptera | Coniferous Forests | Choristoneura fumiferana |
| Spurred Crab Spider | Araneae | Various Habitats | Misumena spp. |
| Squash Bug | Hemiptera | Agricultural Fields | Anasa tristis |
| Squash Vine Borer | Lepidoptera | Cucurbit crops | Melittia cucurbitae |
| Stag Beetle | Coleoptera | Forests | Lucanidae |
| Stalk-Eyed Fly | Diptera | Tropical Forests | Diopsidae |
| Stalked-Eyed Fly | Diptera | Tropical Forests | Diopsidae spp. |
| Steel-Blue Cricket Hunter | Hymenoptera | Grasslands | Chlorion aerarium |
| Steely Blue Beetle | Coleoptera | Diverse Habitats | Chrysolina spp. |
| Stick Insect | Phasmatodea | Vegetation | Phasmatidae |
| Stilt Bug | Hemiptera | Wetlands | Berytidae spp. |
| Stink Ant | Hymenoptera | Tropical Forests | Pachycondyla spp. |
| Stink Bug | Hemiptera | Diverse habitats | Pentatomidae |
| Stone Centipede | Scolopendromorpha | Diverse Habitats | Scolopocryptops spp. |
| Stone Fly | Plecoptera | Near water | Plecoptera |
| Stonefly | Plecoptera | Aquatic | Plecoptera |
| Straight-Margined Caddisfly | Trichoptera | Aquatic | Mystacides azurea |
| Straw Sedge Moth | Lepidoptera | Wetlands | Chilo spp. |
| Strawberry Bud Weevil | Coleoptera | Crop | Anthonomus signatus |
| Strawberry Spider | Araneae | Strawberry plants | Araneidae |
| Striped Beetle | Coleoptera | Diverse Habitats | Graphoderus spp. |
| Striped Blister Beetle | Coleoptera | Agricultural | Epicauta vittata |
| Striped Ground Cricket | Orthoptera | Grasslands | Nemobius spp. |
| Striped Pine Borer | Coleoptera | Coniferous Forests | Monochamus spp. |
| Sugar Glider | Phasmatodea | Deciduous Forests | Petauroides volans |
| Sugar Maple Borer | Coleoptera | Deciduous Forests | Glycobius speciosus |
| Sulfur Butterfly | Lepidoptera | Open areas | Pieridae |
| Sulfur Moth | Lepidoptera | Woodland | Rhodinia fugax |
| Sunflower Head Moth | Lepidoptera | Agricultural Fields | Homoeoosoma electellum |
| Swallow-Tailed Butterfly | Lepidoptera | Woodland | Papilio machaon |
| Swallow-Tailed Moth | Lepidoptera | Forests | Ourapteryx sambucaria |
| Swallowtail Butterfly | Lepidoptera | Various habitats | Papilionidae |
| Swamp Cicada | Hemiptera | Wetlands | Neotibicen tibicen |
| Swamp Darter | Odonata | Wetlands | Sympetrum spp. |
| Swamp Milkweed Leaf Beetle | Coleoptera | Wetlands | Labidomera clivicollis |
| Sweat Bee | Hymenoptera | Wide range | Halictidae spp. |
| Sweet Potato Stem Borer | Lepidoptera | Agricultural Fields | Omphisa anastomosalis |
| Swollen-Thighed Beetle | Coleoptera | Forests | Mordellistena spp. |