Scaptotrigona postica 
Scarlet Oak Sawfly 
Sceliphron curvatum 
Sceliphron destillatorium 
Sceliphron spirifex 
Scirtetes robustus 
Scolia fuciformis 
Scottish Wood Ant 
Shimmering Golden Sugar Ant 
Shiny-headed Wasp-Sawfly 
Sicilian Mortar Bee 
Silk-Button Spangle Gall Wasp 
Silver-tailed Petal-cutter Bee 
Sitka Bumble Bee 
Six-spotted Scolia 
Slender-faced Masked Bee 
Slender-scaped Carpenter Bee 
Small brown paper wasp 
Small Sand Wasp 
Smiling Mason Wasp 
Smokey-winged Beetle Bandit Wasp 
Snelling's Carpenter Ant 
Solenopsis invicta x richteri 
Sonoran Bumble Bee