Orders of Insecta lepidoptera, coleoptera, hymenoptera, hemiptera, odonata, and orthoptera

Lepidoptera- Butterfly

There are about 24,000 species of butterflies. The moths are even more numerous: about 140,000 species of them were counted all over the world.

An adult butterfly has a very short life: just three to four weeks. However, the entire life cycle of a butterfly can range between 2 and 8 months, depending on the species. Some migratory butterflies, such as the North American Monarch, can live as long as 7 to 8 months in one generation.


The term bug is often used used to describe insects, spiders, centipedes and a whole range of other arthropods, but true bugs or Hemiptera actually only includes things like aphids and shield bugs. True bugs all have very unusual mouthparts.

Hemiptera An order of exopterygote insects comprising the true bugs. Hemipterans typically have oval flattened bodies with two pairs of wings, which are folded back across the abdomen at rest.


Dragonflies were some of the first winged insects to evolve, some 300 million years ago. Modern dragonflies have wingspans of only two to five inches, but fossil dragonflies have been found with wingspans of up to two feet.

At the end of its larval stage, the dragonfly crawls out of the water, then its exoskeleton cracks open and releases the insect’s abdomen, which had been packed in like a telescope. Its four wings come out, and they dry and harden over the next several hours to days


They are holometabolous, i.e. they undergo complete metamorphosis with a distinct larval, pupal and adult stage. With the principal feeding as a larva, and the sexually mature stage as an adult. So every adult beetle you see was once an egg, a larva, a pupa, and finally the adult beetle.

Around 40% of all known insect species are beetles, this equals about 400,000 species and some estimates suggest there could be as many as 3 - 8 million beetle species on Earth.


There are around 20,000 species of bee world wide, and around 4000 species native to the USA, and 270 species in the U. K..

The ants, bees, wasps, horntails and sawflies are all in the order Hymenoptera.


Some grasshoppers lay their eggs in the soil and then inject froth that mixes with the soil to form an egg pod.

Grasshoppers, crickets, katydids and locusts all belong to the order Orthoptera which means 'straight wings'. Most are easily recognisable by their hind legs, which are usually enlarged for jumping. They are often easily seen jumping away when disturbed or heard 'singing' at night. They are mainly medium to large insects with some species in Australia growing to a length of 10 centimetres. There are about 3000 species in Australia.


There are over 120,000 species of flies – house flies are the most common species.

The hind wings have been reduced to form club-shaped halteres or gyroscopic balancers. These are most easily seen in the crane flies or Tipulidae (see below). Without halteres flies just fall to the ground.


Created with images by francok35 - "hemiptera insects bug" • Charlesjsharp - "orange-winged dropwing dragonfly (trithemis kirbyi)" • makamuki0 - "coleoptera beetle cerambícido" • Mick E. Talbot - "Hymenoptera" • Sam Fraser-Smith - "Orthoptera" • Mick E. Talbot - "Diptera"

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