Giant leafhopper 
Giant mesquite bug 
Giant Shield Bug 
Giant Willow Aphid 
Gigantorhabdus enderleini 
Glasshouse leafhopper 
Glassy-winged sharpshooter 
Glaucias crassus 
Glaucias nigromarginatus 
Glossonotus acuminatus 
Golden black cicada 
Golden Emperor 
Goldenglow Aphid 
Goneokara pullum 
Goniopsara mystica 
Gonocerus insidiator 
Gorse lacebug 
Gorse shield bug 
Graminella villica 
Grape Phylloxera 
Grapevine Leafhopper 
Graphocephala gothica 
Graphosoma lineatum 
Graptostethus servus