Gall midges
Gall midges are small flies in the family Cecidomyiidae. Many species cause galls on plants, which are abnormal swellings of plant tissue.
Gall wasps
Gall wasps are tiny wasps in the family Cynipidae. They lay their eggs in plant tissues, causing the plant to form protective galls for the larvae.
Giant ichneumon wasps
Giant ichneumon wasps are parasitoid wasps in the family Ichneumonidae. Some species have extremely long ovipositors for laying eggs in wood-boring larvae.
Giant water bugs
Giant water bugs are large aquatic bugs in the family Belostomatidae. They are fierce predators and can deliver a painful bite to humans.
Girdler beetles
Girdler beetles are longhorn beetles whose larvae girdle and bore into twigs and branches, weakening or killing the plant.
Glow-worms
Glow-worms refer to various bioluminescent beetles or larvae, such as those in the families Lampyridae and Phengodidae. They emit light to attract mates or prey.
Gnats
Gnats are small flying insects in several families, including Chironomidae and Sciaridae. Some bite, while others are harmless and simply nuisance pests.
Grasshoppers
Grasshoppers are insects in the suborder Caelifera. They have strong hind legs for jumping and can cause serious damage to crops.
Green lacewings
Green lacewings are insects in the family Chrysopidae. Their larvae are voracious predators of aphids and other small pests.
Ground beetles
Ground beetles are beetles in the family Carabidae. Most are predators and live under stones, logs, or leaf litter.
Gumleaf skeletonisers
Gumleaf skeletonisers are moths whose larvae feed on eucalyptus leaves, leaving only the veins behind. They are native to Australia.