Skip to main content

Insect & Pests

All Insect & Pests Content

A metallic blue-green tiger beetle feeding on a light green caterpillar.

Tiger Beetles: Beneficial Predators and Ecosystem Health Indicators

Tiger beetles are generalist predators, meaning they prey on a wide variety of pests. Observing them in a landscape is a great sign that an ecosystem is healthy and supporting a diversity of both prey and predators.

A thin brown insect with two white spots on its side hoisting a yellow insect up with its mouthparts.

Biocontrol Agents: Brown Lacewings

With so many insect pests causing concern for both gardeners and farmers, it’s important to know which ones are on our side. In this article, we focus on the brown lacewing and the beneficial role it plays within the landscape.

Numerous small holes on a green tomato leaf.

What’s Causing the Tiny Holes on My Tomato Leaves?

Flea beetles are once again causing issues for gardeners across South Dakota. These herbivorous beetles can be a pest of many different garden plants, including tomatoes, peppers, beans, squash and lettuce.

A fly with a metallic body, long legs, and clear wings with smoky markings.

Flying Gems: Long-Legged Flies

Whether scouting for pests in crops or in a garden, chances are you’ve encountered a long-legged fly. These insects provide essential biocontrol of many insect pests and should be encouraged in the landscape.

Moth with green metallic wings and an orange body resting on a green leaf.

Squash Vine Borer Activity Estimates: June 10, 2022

Although gardening is well underway in South Dakota, squash vine borers should not be an issue for at least another week. See our latest activity estimates based on conditions around the state.

Purple-brown caterpillar with orange head on a green corn leaf.

Common Stalk Borer Activity Estimate: June 9, 2022

In some areas of South Dakota, we have reached enough degree days that common stalk borer caterpillars will begin moving into corn from weedy hosts along the edges of fields.

Multiple views of a green lacewing adult. The adult has a bright green body and large metallic eyes. The wings are translucent with green venation.

Green Lacewings: Beneficial Predators for Both Small and Large-Scale Landscapes

Many insect species are beneficial to landscapes, and some are even reared in large quantities to be released as biological control agents. In this article, we will focus on one of those insects, the green lacewing.

Bean leaf beetle feeding damage on young soybean plants.

Bean Leaf Beetles Active in South Dakota

Soybeans in South Dakota are being targeted by the overwintering population of bean leaf beetles. See our latest activity report from around the state, along with scouting and management recommendations.

Left: Squash bee adult. Right: Male long-horned bee.

Beneficial Pollinators: Squash Bees and Long-Horned Bees

South Dakota is home to more than 400 species of native bees. In this article, we will highlight the squash bee and the long-horned bee, two beneficial native pollinators.

Alfalfa weevil larvae and adult.

Alfalfa Weevil Larvae Are Active in South Dakota

Alfalfa weevil larvae have been confirmed in alfalfa fields in South Dakota, which means it is time to start scouting fields more regularly. Learn some tips and consideration for scouting your fields.