Top 20 Most Common Insects in Santa Clarita

Cabbage white (Pieris rapae) derives its common name from its habits as a caterpillar, which is a ferocious pest for cabbage, kale and broccoli farmers. In North America, it is one of the first butterflies to emerge in spring, heralding the beginning of the season.

The brown Widow (Latrodectus geometricus) is a lighter color with an orange hourglass shape on its abdomen, different from the black widow. They are known as "cobweb spiders" because they have an odd way of making webbing. Brown Widows have a toxic bite which is weaker in the males. It is said that brown Widows regularly fight for territory against black widows.

The white-Lined Sphinx ( Hyles lineata) is a colorful furry moth with striped wings. It has a similar size of a hummingbird, and behaves like a hummingbird as well. It can fly extremely fast, and instantly swing from side to side while hovering just like a hummingbird. It feeds on nectar from a variety of flowers including petunia, honeysuckle, lilac, clovers, thistles, and jimson weed.

The scientific name of the species was first validly published in 1865 by Hagen in Selys.

Depending on the species, the adult Culex mosquito may measure from 4–10 mm (0.2–0.4 in). The adult morphology is typical of flies in the suborder Nematocera with the head, thorax, and abdomen clearly defined and the two forewings held horizontally over the abdomen when at rest. As in all Diptera capable of flight, the second pair of wings is reduced and modified into tiny, inconspicuous halteres. Formal identification is important in mosquito control, but it is demanding and requires careful measurements of bodily proportions and noting the presence or absence of various bristles or other bodily features. In the field, informal identification is more often important, and the first question as a rule is whether the mosquito is anopheline or culicine. Given a specimen in good condition, one of the first things to notice is the length of the maxillary palps. Especially in the female, palps as long as the proboscis are characteristic of anopheline mosquitoes. Culicine females have short palps. Anopheline mosquitoes tend to have dappled or spotted wings, while culicine wings tend to be clear. Anopheline mosquitoes tend to sit with their heads low and their rear ends raised high, especially when feeding, while culicine females keep their bodies horizontal. Anopheline larvae tend to float horizontal at the surface of the water when not in motion, whereas culicine larvae float with head low and only the siphon at the tail held at the surface.

The state insect of Montana, mourning cloak (Nymphalis antiopa) owes its name to a visual comparison with a girl who, disliking mourning, allows a few inches of color to show from under her mourning garb. Among the longest-lived butterflies, individuals may persist for as long as eleven to twelve months. It is a powerful flier, with vagrants often found many miles from the usual migration paths.

The diabolical ironclad beetle( Phloeodes diabolicus) has a strong defense capability owing to its thick and hard exoskeleton. It can still survive even crushed by a car. This flightless beetle is broadly distributed in California, commonly under barks feeding on fungus in dead hardwood and coniferous trees.

Strymon melinus is a butterfly of the family Blüullingen (Lycaenidae) of the subfamily of Hairstreak (Theclinae).

The wingspan is 2 - 3 cm.

Argentine ants are unable to dig deep nests so they tend to take up residence in the cracks of concrete, wooden floorboards, and even human belongings. They may also make a home in shallow leaf litter. Researchers have discovered three "supercolonies" of these ants, genetically related on three different continents, with the one in Europe spanning 6,000 km.