Insects > Bees | Blattodea | Butterflies | Case Moths | Cicada | Coleoptera | Diptera | Dragonflies | Moths | Wasps – see other individually listed insects below…

Insects (class Insecta) are a diverse group of hexapod invertebrates and is the largest group within the phylum Arthropoda. The class includes butterflies, crickets, moths, ants, termites, mantids, grasshoppers, crickets, just to name some of them.

Common Eggfly Butterfly (Hypolimnas bolina nerina)
Common Eggfly Butterfly (Hypolimnas bolina), Alice Springs, NT

An amazing diverse group of animals that have adapted to almost every environment on the planet earth, insects play an essential role in the web of life. The interaction of insects and plants plays a crucial role in pollination and is very important for the environment and the humankind.

Insects comprise 75% of all catalogued animal species. They have exoskeletons and three body parts (head, thorax and abdomen), six jointed limbs and a pair of antennae.

Ribbed Case Moth (Hyalarcta nigrescens), Alice Springs, NT
Ribbed Case Moth (Hyalarcta nigrescens), Alice Springs, NT

The orders that contain the greatest numbers of species include Coleoptera (beetles), Diptera (true flies), Hymenoptera (ants, bees, wasps), and Lepidoptera (butterflies and moths).

Many insects are predators, parasites or parasitoids with a great diversity of hunting strategies and behaviours to capture or feed on their prey.

Other creatures sometimes referred to as insects include spiders and centipedes. Unlike the class Insecta, that only have six legs, spiders are in the class Arachnida and have eight legs.

Orange Drummer (Thopha colorata)
Orange Drummer (Thopha colorata)

  • Scientific classification
  • Domain: Eukaryota
  • Kingdom: Animalia
  • Phylum: Arthropoda
  • Clade: Pancrustacea
  • Subphylum: Hexapoda
  • Class: Insecta
Christmas Beetle (Anoplognathus macleayi)
Christmas Beetle (Anoplognathus macleayi)

Footnote & References

  1. Insects (Class Insecta), iNaturalistAU,
  2. Insect Keys, NSW DPI,
  3. Identification resources online, The Australian National Insect Collection provides web-based information and tools for the identification of insects and related organisms, CSIRO,

InsectsBees Blattodea Blistered Pyrgomorph Butterflies Christmas Beetle Cicada Diptera Dragonflies & Damselflies Garden Mantis Mango Planthopper Moths Protaetia fusca Processionary Caterpillar Wasps Water Scorpion Witchetty Grub