The body and legs of these insects are long and thin. Generally, they are wingless, although some species do have small wings. Their antennae are also long and thin.
These are stocky brown beetles, about 1.5 cm long, with short, clubbed antennae.
These are large insects, from 4.7 to 5.6 cm long, pale green to greyish-brown in colour. They are easily recognizable by their characteristic grasping forelegs, adapted to capturing prey, and their long “neck,” or prothorax.
The very mobile head has a pair of antennae and ends in a small mouth. With their large compound eyes and three simple eyes, praying mantids have exceptionally good vision for insects.
Two pairs of wings are attached to the thorax. Long, slender forewings protect the second pair of wings, normally folded, that open up like fans.
Females are much larger than males.
Fireflies are 5 to 25 mm long. The head is hidden beneath a flattened pronotum, which is part of the thorax.
The soft elytra are normally brown or black, frequently with yellow or orange markings. There is a second pair of wings beneath the elytra. The females of many species are wingless or have very short wings.
The final two or three segments at the tip of the abdomen are generally luminous. They are a lighter shade. Depending on the species, both males and females or just one of the two sexes emits light.
Females are usually slightly larger than males.
These insects have long, cylindrical bodies, and antennae at least half as long as their bodies. This characteristic earned them their common name. The base of the antennae is often partly surrounded by the insect’s eyes. Many species are brightly coloured.
Worldwide, they vary in length from 0.2 to 15 cm. In North America, the largest specimens measure 6 cm.
House crickets are yellowish-brown, with dark lines on the head, long antennae, two compound eyes and grinding mouthparts. They have two pairs of many-veined wings on the thorax. The forewings are fairly tough. They protect the membranous hindwings, which are folded in a fan shape when at rest. Of the three sets of legs, the hindmost legs are the most noticeable, since they are adapted for jumping. Their femurs are particularly strong. Crickets have two sensory appendages called cerci at the tip of the abdomen.
Females have an ovipositor, a long cylindrical egg-laying organ, between the cerci.
These typically stout, broad beetles have an elongated or oval shaped body, and come in a variety of colours. Their antennae are clubbed and tipped with leaf-like plates called lamellae, which can be drawn into a compact ball.
Aphids are tiny, pear-shaped, soft-bodied insects and come in a wide variety of colours.
The great majority of adult aphids are wingless. Males may occasionally have wings, as well as females that need to migrate to new host plants.
Aphids have a tail-like protrusion, or cauda, at the tip of the abdomen. This directs the secretions of a sweet substance called honeydew from their rectal apertures. Many species also have two cornicles – tubes resembling tailpipes – extending from the abdomen.
Mantids are among the most recognizable insects. Their characteristic prayer-like posture, with folded forelimbs close to its thorax, is what earned them the common name of praying mantis. They have a very mobile triangular head and large compound eyes. Their broad, spiny forelegs are used to capture living prey.
In many species, the females are wingless or short-winged. Males have two pairs of wings and use them to fly to their partners.
The mantid species found in Canada and the United States belong to the Mantidae family. They are brown, green or grey, and blend in with the colour of the surrounding vegetation and bark.
Asian lady beetles are between 4.8 and 7.5 mm long. Their elytra, covering a pair of membranous wings, occur in different shades ranging from yellow, orange and red to black and have anywhere from 0 to 20 spots. In Canada, the most common form is orange with 19 black spots.
The pronotum, which covers the front of the thorax just behind the head, has two football-shaped pale eye spots.