S
- Sapwood
- Saturniidae
- Scarabaeidae
- Scelionidae
- Scion
- Sclerite
- Scoliidae
- Scolytinae
- Scutelleridae
- Scutellum
- Scythridae
- Secondary plant constituents
- Seed dressing
- Sejugal furrow
- Semiochemical
- Sensilli
- Sepals
- Sesame phyllody
- Sesquiterpene
- Sex ratio
- Shake bucket
- Shield
- Sib-mating
- Sibling species
- Signiphoridae
- Silk
- Siphunculi
- Solar light trap
- Solarisation
- Solenidion
- Solitariform
- Sootymold
- Spatula
- Spatulate
- Spermadactyl
- Spermatophore
- Sphingidae
- Spinetoram
- Spinosads
- Spiracles
- Spirotetramat
- Spore
- Sporulation
- Square
- Sterile insect technique
- Sternal plate
- Sternorrhyncha
- Stigmaeidae
- Stigmata
- Stomach poison
- Strand
- Striae
- Stridulate
- Stub
- Stylettiform
- Sucker
- Sulfuryl fluoride
- Superparasitism
- Suranal plate
- Surfactant
- Syconium
- Sylvanidae
- Symbiosis
- Sympatric
- Symphyta
- Synergism
- Syrphidae
- Systemics