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Insect & Pests

All Insect & Pests Content

A brown and black cow standing in a feedlot with flies on its face.

Summer Fly Control in Feedlots

Just as longer days mark the beginning of summer, so does the arrival of increased number of flies in feedlots. Flies are not only are an annoyance, they can reduce performance and worsen heat stress. Successful control strategies start with sanitation.

Brown caterpillar with tan head capsule and 3, light-tan stripes running along its back.

Monitor Lawns and Gardens for Bronzed Cutworm Activity

Bronzed cutworms can be an issue for lawns and gardens in South Dakota. In grass, bronzed cutworms will feed and leave small brown circular patches. Large populations of bronzed cutworm can result in severe lawn injury.

Small black beetles feeding on a green leaf.

Flea Beetles in the Garden

Flea beetles have been out in full force so far this year. This group of herbivorous beetles can be a pest of many different garden plants, including tomatoes, peppers, beans, squash, lettuce and others.

Yellow and green leaf of oats. Yellowing color is a symptom of Barley yellow dwarf virus.

Barley Yellow Dwarf Developing in Oats

A few oat fields that were recently scouted were found to have barley yellow dwarf virus infected plants. The infected plants were few and scattered throughout the oat fields.

Black insect with a white spot on the back and orange tipped legs and antennae.

A fly? A hornet? Nope, it’s a sawfly!

This spring, there have been multiple reports of people seeing large fly-like insects in their yards. These insects are sawflies, and all reports thus far have been the elm sawfly (Cimbex americana).

Numerous grayish-brown bugs gathering on a green stem.

False Chinch Bugs Back Again

False chinch bugs are active yet again in South Dakota. Although they are normally only a nuisance pest, their populations can become magnified during cool, wet springs.

Large mass of small green insects and plant debris present on green implement.

Watch for Pea Aphid Populations in Alfalfa

Recent reports have indicated that pea aphid populations are very large in some alfalfa fields and should continue to be monitored and possibly managed.

A teardrop shaped tan tick with eight legs and brown markings on a white background.

Winter Ticks in South Dakota

Winter ticks, also called moose ticks, are unlike other tick species because they are active during the winter months.

A steer standing in a feedlot. Its middle back has a visible bald spot due to lice.

Winter Lice Control

Seeing cattle rubbing hair off due to lice infestations can be extremely frustrating. Not only are the cattle damaging fences and equipment, there also can be performance losses and health issues not to mention that the cattle are simply not as visibly appealing, which can be very important for seedstock producers or feeders selling backgrounded feeders.

grey to brown fly with large eyes and elongated mouthparts

What are Those Gigantic Flies?

As we progress later into the summer, we commonly see an increase in horse fly activity.