Denver-Boulder Metro Area: Bugs
This guide contains spiders, bees, wasps, ants, beetles, dragonflies, grasshoppers, flies and other bugs that can be found in the Denver-Boulder Metro Area, including Adams, Arapahoe, Boulder, Broomfield, Denver, Douglas, and Jefferson Counties.
Margined Calligrapher
Toxomerus marginatus, is a common species of hoverfly. It is found in many parts of North America.
Orange-spined Drone Fly
Eristalis nemorum is a species of hoverfly. It is found in the Palearctic (Fennoscandia South to Iberia, the Balkans and Italy, Ireland eastwards through Central Europe into Turkey and Russia and on into the Russian Far East, Siberia and Japan) and in the Nearctic (Quebec south to Colorado).
Common Drone Fly
Eristalis tenax is a hoverfly, also known as the drone fly (or "dronefly"). It is migratory and cosmopolitan, the most widely distributed syrphid species in the world, and is known from all regions except the Antarctic. It has been introduced into North America and is widely established.
Thick-legged Hoverfly
Syritta pipiens is a very common species of European hover fly. Sometimes called the thick-legged hoverfly, from its distinctive broad hind femora. They are fast nimble fliers, Larvae feed in rotting organic matter.
Adejeania vexatrix
Adejeania vexatrix is a species of fly in the family Tachinidae. It is found in western North America from Mexico to Wyoming and British Columbia. In addition to its bright orange abdomen and prominent, heavy black setae, this species is noted for its greatly elongated palpi, which stick straight forward from under the fly's head. A similar looking tachinid fly, Hystricia ...more ↓
Swift Feather-legged Fly
Trichopoda pennipes is a fly in the family Tachinidae. The larvae are parasitoids of several true bugs, particularly squash bugs and leaf-footed bugs in the family Coreidae and stinkbugs in the family Pentatomidae and it is used as a biological control agent for these agricultural pests. It is native to North and South America and has been introduced into southern Europe.
Common Greenbottle Fly
The common green bottle fly (Lucilia sericata) is a blow fly found in most areas of the world, and the most well-known of the numerous green bottle fly species. It is 10–14 mm long, slightly larger than a house fly, and has brilliant, metallic, blue-green or golden coloration with black markings. It has short, sparse black bristles (setae) and three cross-grooves on the ...more ↓
secondary screwworm
Cochliomyia macellaria, the secondary screwworm, is a species of blow fly in the family Calliphoridae.
Yellow Dung Fly
Scathophaga stercoraria, commonly known as the yellow dung fly or the golden dung fly, is one of the most familiar and abundant flies in many parts of the Northern Hemisphere. As its common name suggests, it is often found on the feces of large mammals, such as horses, cattle, sheep, deer, and wild boar, where it goes to breed. The distribution of S. ...more ↓
House Fly
The housefly (Musca domestica) is a fly of the suborder Cyclorrhapha. It is believed to have evolved in the Cenozoic era, possibly in the Middle East, and has spread all over the world as a commensal of humans. It is the most common fly species found in houses. Adults are grey to black with four dark longitudinal lines on the thorax, slightly hairy bodies and a single pair of ...more ↓
Peacock Fly
Callopistromyia annulipes is a species of ulidiid or picture-winged fly in the genus Callopistromyia of the family Ulidiidae.
Picture-winged Fly
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Thistle Stem Gall Fly
Urophora cardui or the Canada thistle gall fly is a fruit fly which, contrary to its common name, is indigenous to Central Europe from the United Kingdom east to near the Crimea, and from Sweden south to the Mediterranean.
Cyrtopogon
Cyrtopogon is a genus of robber flies in the family Asilidae. There are at least 120 described species in Cyrtopogon.
Greater Bee Fly
The large bee-fly, Bombylius major, is a bee mimic. The eggs are flicked by the adult female toward the entrance of the underground nests of solitary bees and wasps. After hatching, the larvae find their way into the nests to feed on the grubs.
Giant mayfly
Hexagenia limbata, the giant mayfly, is a species of mayfly in the family Ephemeridae. It is native to North America where it is distributed widely near lakes and slow-moving rivers. The larvae, known as nymphs, are aquatic and burrow in mud and the adult insects have brief lives.
Chinese Mantis
The Chinese mantis (Tenodera sinensis) is a species of praying mantis native to Asia and the nearby islands. In 1896 this species was accidentally introduced by a nurseryman at Mt. Airy near Philadelphia, PA. Tenodera sinensis often is erroneously referred to as Tenodera aridifolia sinensis because it was at first described as a subspecies of Tenodera ...more ↓
European Mantis
Mantis religiosa, referred to as the European Mantis outside of Europe and known simply as the Praying Mantis in Europe and elsewhere, is one of the most well-known and widespread species of the order Mantodea.
Common Green Lacewings
Chrysoperla is a genus of green lacewings in the neuropteran family Chrysopidae. Therein they belong to the Chrysopini, the largest tribe of subfamily Chrysopinae.
Common Silverfish
A silverfish (Lepisma saccharina) is a small, wingless insect in the order Zygentoma (formerly Thysanura). Its common name derives from the animal's silvery light grey color, combined with the fish-like appearance of its movements, while the scientific name (L. saccharina) indicates the silverfish's diet consists of carbohydrates such as sugar or starches.
