Insect & Pests

All Insect & Pests Content

Gray beetle with long antennae.

Dectes Stem Borer in Soybean

Although Dectes stem borers are more of an issue in South Dakota sunflower, they can also infest soybean. Thier larvae may cause soybean yield losses due to their feeding activity in the pith of the stem and also due to late-season lodging.

Mosquito resting on a dandelion seed head.

West Nile Virus Update: Sept. 17, 2021

The South Dakota Department of Health's latest update indicated that West-Nile-virus-positive mosquitoes were detected in Beadle, Brookings, Brown, Codington, Hand, Hughes, Lincoln and Minnehaha counties in South Dakota.

Rows of empty white, plastic pesticide containers.

Chlorpyrifos Tolerances Revoked by U.S. Evironmental Protection Agency

In August 2021, a final rule was released by the U.S. Environmental Protection Agency for the insecticide active ingredient chlorpyrifos. The rule revoked all tolerances for chlorpyrifos.

Orange beetle with black markings on an orange flower.

Soldier Beetles Visiting Flowers

Flowers in many gardens are currently being visited by soldier beetles. While these orange beetles have a strong preference for flowering plants, they are predators and pollinators and don’t pose a threat to your garden.

Left: Picnic beetle adults feeding on a damaged tomato. Right: Multicolored Asian lady beetle adults infesting an apple.

Picnic Beetles and Multicolored Asian Ladybeetles Bothering Produce

Ripe fruit that has been injured can attract undesirable insects into your garden. Some of these insects will feed on the produce, which can completely ruin it by increasing the rate of decay and make it unappealing.

Seven millipedes, some curled up, on a white background with a quarter for scale.

Millipedes in Yards and Homes

During late summer and early fall, millipedes are typically a hot topic as they are observed moving into homes, sheds and other outbuildings. When found indoors, they are considered accidental entrants, as they are not able to reproduce indoors and will eventually die.

Green and brown grasshopper with two yellow lines that originate on the head and meet on the abdomen.

Grasshoppers in Gardens

Due to large populations and dry conditions, grasshoppers are moving into gardens and feeding on whatever they can find. In a normal year, grasshoppers can be a nuisance in a garden, but during an outbreak year, they can present a real threat to gardens, shrubs and small trees.

Brown beetle with hairy body and black mottled pattern on a pink flower petal.

Bumble Flower Beetles Are Here

One of the insects that starts to attract attention this time of year are the bumble flower beetles. These large and noisy beetles somewhat resemble June beetles, but they show up later in the season.

Young woman photographing leaf-scorched hostas in a garden.

Garden and Yard Problems Solved: How to Submit Photos and Samples to Our Experts

Garden and lawn issues can sometimes be diagnosed by simply looking at a photo. Photos give our Extension experts a place to start, and providing them with the best possible photo can help the process.

Green beetles feeding on the tip of a corn ear.

Northern and Western Corn Rootworm in South Dakota

Fact sheet on Northern and Western Corn Rootworm in South Dakota