LADYBUGS DESCRIPTION
Ladybugs are small insects, ranging from 1 mm to 10 mm (0.04 to 0.4 inches), and are commonly yellow, orange, or scarlet with small black spots on their wing covers, with black legs, head and antennae. They are generally considered useful insects, because many species feed on aphids or scale insects, which are pests in gardens, agricultural fields, orchards, and similar places. Within the colonies of such plant-eating pests, ladybugs will lay hundreds of eggs, and when these eggs hatch, the larvae will commence feeding immediately. In addition, they exude a viscous yellow, foul-smelling defensive compound when disturbed that may stain whatever it contacts.
Habits
The adults hibernate, usually on the south sides of large objects such as trees or houses during the winter months. In the autumn they search for cracks, crevices, or other acceptable microsites for overwintering shelter. The overwintering adults emerge from hibernation in spring and lay 10-15 eggs. Larvae pass through 4 molts over 10-14 days, after which pupation occurs. After a period of several days, the adults become reproductively active and are able to reproduce again. Total life span is 1–2 years on average.
Control Methods
Lady bugs overwinter inside wall voids and attics. Exclusion of crack and crevices around window and door frames, vents, overhangs etc. should be screened with fine mesh screening or other appropriate sealer. Late summer or early fall, a labelled residual insecticide should be applied around door frames, window frames soffits and other cracks or crevices where lady bugs may enter. Winter and spring, insect light traps can be used in the attic or dark room of the house to attract and capture lady bugs. Gold sticks and/or glue boards can be placed by the window to trap lady bugs. Insecticides should not be used indoors to control lady bugs.
Ladybug Information
Pest Spotlight: Cankerworms
Now that it’s springtime, the bugs are starting to re-emerge. And among them – cankerworms. You’ve probably heard of these bugs, but how much do you know about them? Here in Canada’s prairies, there are two major groups of cankerworms: spring cankerworms and fall cankerworms. Fall cankerworms lay their eggs in the fall, whereas spring…
What Are Bed Bugs?
The biggest pest problem threatening any populated area in recent years is the bed bug. Their population had declined steadily since the 1930s, to the point of near extinction a few years ago. Unfortunately, due to numerous circumstances, bed bugs have returned with a vengeance, and exist everywhere. Bed bugs have been with us a…
Carpenter Ants: More Like Demolition Experts
Carpenter ants are one of the biggest insect threats to Canadian homes. They’re found in all areas of the province, and infestations often remain undetected, until repair becomes very costly. Most of the time, when people think about insects causing property damage, they think about termites. Carpenter ants, unlike termites, don’t consume wood fiber, they…
Pest Spotlight: Fall Webworm
You may have been seeing them – unsightly webs in trees, in parks or around your home. These particular webs are surprisingly not caused by spiders, but instead, caterpillars. The most likely culprits: the fall webworm and Eastern tent caterpillar. In this blog we are showcasing the fall webworm. A bit of a description: Fall…