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Insects and humans cohabit the Earth and have developed complex relationships. Insect pests (less than 1% of all species) are those insects that feed on, compete for food with, or transmit diseases to humans and livestock.

Insects are small invertebrates (more than 75% of known species are less than 6 mm long) with 3 pairs of legs, 1 or 2 pairs of wings (or lacking wings) and a segmented body.

Ant, common name for small, mostly ground-dwelling social insects of family Formicidae, order Hymenoptera.

Dragonfly, common name for robust carnivorous insects of order Odonata [Gk "toothed," referring to mouth parts].

Most insects are beneficial, playing many ecological roles. Less than 1% are pests. They are the principal food of many birds and reptiles, and the survival of insect-pollinated plants depends on them.

Stonefly is the common name for small to medium-sized, usually brown, aquatic insects of order Plecoptera.

Grasshopper is the common name for straight-winged insects which, together with locusts, make up the order Orthoptera.

Bug is the name properly applied to a member of the order Hemiptera, the most diverse order of insects having incomplete metamorphosis.

Charles James Stewart Bethune, clergyman, entomologist, educator (b in W Flamborough Twp, Upper Canada 11 Aug 1838; d at Toronto 18 Apr 1932). He was a graduate of Toronto's Upper Canada College and University of Toronto's Trinity College (BA 1859) and was ordained an Anglican priest in 1862.

Opened on 7 February 1990, the Montréal Insectarium is part of the “Space for Life” network, which includes Montréal’s Biodome, Planetarium and Botanical Garden.

Entomology is the branch of zoology dealing with the study of insects, although which organisms are included is open to interpretation.

Thrips, order Thysanoptera (Gk for "fringe-wings"), are among the smallest insects, being slender and usually less than 2 mm long.

Adult flies have sucking or piercing mouth parts and lack the mandibles with which other insects bite food. Many so called "biting flies" (eg, horseflies, mosquitoes, no-see-ums, black flies, stable flies, tse-tse flies) feed on VERTEBRATE blood.

Wasp is a term applied to stinging insects in the division Aculeata of the order Hymenoptera, which also includes ants and bees.

A classification system acts as an efficient storage mechanism for information about each taxon or group.

Cicadas are large, sound-producing insects in the family Cicadidae, best known for their multi-year life cycles. They are true bugs, belonging to the order Hemiptera. Scientists know of more than 3,200 species of cicada worldwide, most of them from the tropics. In Canada, scientists have recorded 21 species, found in forested areas across the country and as far north as Sambaa Deh Falls Territorial Park, Northwest Territories. The loud, distinctive calls of males are heard on warm summer days, and are unique to each species. Cicada species are either annual or periodical, depending on their life cycle. While annual species are seen each year, periodical species emerge in 13- or 17-year cycles. Only annual species of cicada are found in Canada.

Lacewing is the common name for small, fragile insects of the 2 most common families (Chrysopidae, green lacewings; Hemerobiidae, brown lacewings) of order Neuroptera.

Tropical Asian and N Australian pitcher plants of the genus Nepenthes belong to the family Nepenthaceae. The Australian flycatcher (Cephalotus follicularis) of SW Australia is the only species of the family Cephalotaceae.

Mayfly is the common name for small, fragile, soft-bodied insects comprising the order Ephemeroptera (from Greek ephemeros, meaning, "living a day," and ptera, “wings”).

Damselfly, thin-bodied, carnivorous insect with 2 pairs of long, membranous, narrow-based wings.