Hackberry nipplegall maker 
Hackberry Petiole Gall Psyllid 
Hadrodemus m-flavum 
Hadrodemus noualhieri 
Haematoloma dorsata 
Halimunella tadauchii 
Halosalda lateralis 
Haploprocta sulcicornis 
Harlequin Bug 
Harlequin cabbage bug 
Harmostes fraterculus 
Harmostes reflexulus 
Harpocera thoracica 
Hawthorn shield bug 
Heath Assassin Bug 
Heath Spittlebug 
Heliria cristata 
Helmeted Squash Bug 
Helopeltis theivora 
Hemisphaerius formosus 
Hemisphaerius stali 
Hemitrichoscarta deianira 
Hemlock Woolly Adelgid 
Hesperocorixa interrupta