Leafhoppers

Although leafhoppers typically go unnoticed, walking through infested areas of turf grass often brings attention to these tiny insects.  Measuring only about 1/16th of an inch, leafhopper adults are winged and capable of flying short distances when disturbed.  Immature leafhoppers are wingless; they are however capable of jumping short distances when needed, hints the name […]

Ant Lions

Here in Colorado, approximately 50 species of ant lions are present. In the southern portion of the United States these insects are more commonly known as doodle bugs.    Adults are commonly confused with damselflies; however, their knobbed or clubbed antennae are a feature that upon close examination can easily differentiate the two.  During the day, […]

Lilac/Ash Borer

A common wood borer found on ash trees throughout Colorado, the lilac/ash borer is native to North America.  Aside from ash trees, damage less commonly occurs to lilac and privet.  Damage most commonly occurs in trees that have been recently transplanted or are grown in less than ideal conditions including those experiencing drought like conditions.  […]

Pigeon Tremex Horntail

Frequently mistaken for a giant wasp, pigeon tremex horntails are actually a non-stinging insect that begins life as a wood borer of several species of trees including silver maple, ash and elm.  They have also been known to attack conifer trees in forested areas.  Pigeon tremex horntails are not commonly considered as a pest that […]

Robber Flies

Probably best described as a confused mix of several insects including a fly, a dragonfly and a mosquito, robber flies have a unique appearance.  Adult robber flies have a bearded look to their face with a concave area between their eyes with stubby antennae; beak-like mouth parts, long legs, a single pair of long wings […]

Milkweed (Common Seed) Bugs

Small milkweed bugs are one of the most commonly mistaken for boxelder bugs.  There are however some identifying characteristics to know the difference between the two.  Boxelder bugs have a characteristic V shaped reddish-orange pattern to their wings while small milkweed bugs appear to have an X that does not quite intersect at the center […]

False Chinch Bugs

False chinch bugs are small, grey to black bugs that commonly feed on plants in the mustard family.  Favored plants include mustard greens, canola and radish; however, they have been known to feed on species outside of the mustard family including lettuce and potato.  Overwintering adults are common on flixseed, a weed commonly associated with […]

Root Weevils

Four species of root weevil are established in Colorado including strawberry root weevils, lilac root weevils, black vine weevils and rough strawberry root weevils.  Varying in size by species, root weevils are 1/4”-1/2” in length.  Eggs are laid around the base of plants and larvae develop by pruning roots.  Pupation also occurs within the soil […]

Western Conifer Seed Bugs

Much like the boxelder bug, the western conifer seed bugs is considered as an occasional invader into homes and structures.  This invasion occurs during cooler weather, typically from fall to spring.  The western conifer seed bug is found throughout the state and is associated with pine trees.  When disturbed, the western conifer seed bug will […]

Elm Leaf Beetles

A serious pest of elm trees throughout Colorado, the elm leaf beetle overwinters in its adult form in cracks and crevices.  As spring leafs begin to emerge on elm trees, so do the adult beetles that come to feed and start their egg laying process.  Eggs are football shaped and laid in clusters on the […]