Top 20 Most Common Insects in Oak Lawn

Ochlerotatus triseriatus, also known by the synonym Aedes triseriatus, is a member of the true fly order (Diptera: Culicidae). It is called the eastern tree hole mosquito due to its predilection towards breeding in stagnant water that is found in natural holding containers such as tree holes. It is native to the eastern United States and southern Canada and favors hardwood habitats. It has been found as far south as the Florida Keys, as far west as Idaho and Utah, and as far north as Quebec and Ontario. This species has not yet been found in Europe, but it has the potential to spread through international trade. In 2004, it was found in a shipment of tires travelling from Louisiana to France, but it was identified and targeted with insecticides that truncated its spread. It is a known vector of La Crosse encephalitis and canine heartworm disease. In the laboratory, it has been found to vector several other viruses including yellow fever, eastern encephalitis, Venezuelan encephalitis, and western encephalitis. Because of its potential for international spread and its proclivity for transmitting disease, monitoring the distribution of this species is essential.

Adults have a distinctive bronze-colored, lyre-shaped pattern on the scutum, and larvae have a linear arrangement of branched frontal setae and a strongly spiculated anal saddle.

Eastern tiger swallowtail (Papilio glaucus) is among the most recognizable butterflies in the eastern United States, where it inhabits a variety of habitats. This species is diurnal and usually solitary, preferring to fly high above the ground until the time comes to mate. Caterpillars display eyespots to deter birds in between some molting phases.

Red admiral (Vanessa atalanta) is a visually striking species of butterfly. Unusually territorial, males will compete for choice areas, and females will only mate with males that maintain their own territories. This butterfly is known for being particularly patient with human interactions, even to the point of perching on clothing or flesh.

Celastrina argiolus ladon is a butterfly from the Lycaenidae family, the small pages, fire butterflies and blues. This subspecies used to be considered as a separate species, but in a revision it is classified as a subspecies of the blue tree. This revision is not accepted by all authors.

Coquillettidia perturbans is a species of mosquito that have been documented in Africa, Asia, Australia, Europe, North America, and South America. This mosquito is a known as a vector of West Nile virus and Eastern equine encephalomyelitis. The geographic range of C. perturbans is increasing due to the growing extensity of the feeding area. They are known to exist throughout the United States, mainly with a southern distribution, and are mammalophilic.

The silver-spotted skipper (Epargyreus clarus) constructs a series of nests throughout its development that depends on its growth stage. Its caterpillar form is considered a major homebody, as they rarely leave the spot they call home. When they are adults, males perch on high branches in order to claim and defend favorable territory. Unusually, silver-spotted skipper adults never visit yellow flowers.

The great spangled fritillary (Speyeria cybele) is a beautiful butterfly that is orange in color and has a variety of spots on its body like a leopard. Females tend to be a bit darker than their male counterparts. Their caterpillars are black with orange spots and often caught feeding on violets. 

The viceroy (Limenitis archippus) is a butterfly that mimics the Monarch Butterfly. The viceroy is distinct because it is smaller than the Monarch. Still, it manages to use this to ward off most predators. There is also polymorphism, meaning that the colors of this butterfly can change depending on the territory.

The common Eastern Bumble Bee (Bombus impatiens) is one of the most important pollinator bees in North America. A decline in the bee population will lead to financial hardships for farmers and reduced food yield. Their efficiency in pollination and foraging comes from their ability to drop "traplines." These lines guide other bees to the correct path for food while informing them of depleted locations.