Hickory Bullet Gall Midge 
Hickory Bumpy Woody Gall Midge 
Hickory Gall Midge 
Hickory Onion Gall Midge 
Hickory peach-haired gall midge 
Hickory Placenta Gall Midge 
Hickory Smooth Gumdrop Gall Midge 
Hickory Spiny Ball Gall Midge 
Hickory Sticky Ginger Jar Gall Midge 
Hickory Sticky Globe Gall 
Hickory Sticky Leaf Spot Midge 
Hickory Supine Squash Gall Midge 
Hickory Urn Gall Midge 
Holly Leaf Miner 
Hoplitimyia constans 
Hoplitimyia mutabilis 
Hoplopeza pulcherrima 
Hornworm Tachinid Fly 
Horse fly 
Housefly 
Hybomitra cincta 
Hybos culiciformis 
Hystricia abrupta 
Idana marginata