Common Masked Bee 
Common Miniature Mining Bee 
Common Sedge-Sawfly 
Common spangle gall wasp 
Common thread-waisted wasp 
Common wasp 
Common Wasp Bee 
Common Wasp-mimic Bee 
Companion Small Carpenter 
Compsocryptus texensis 
Confused Sweat Bee 
Confusing Bumble Bee 
Crabro latipes 
Crabro peltarius 
Cratichneumon paratus 
Crematogaster cerasi 
Crematogaster lineolata 
Crematogaster nigropilosa 
Cryptic Bumble Bee 
Cryptocheilus bicolor 
Crytea sanguinator 
Ctenochares bicolorus 
Curled rose sawfly 
Cynipid gall wasp