Insect & Pests
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Ticks Becoming Active in South Dakota
The arrival of spring in South Dakota means warmer weather and more outdoor activities. However, it also brings an increase in tick activity.
What Are Those Little Flies That Keep Biting Me?
If you have been swarmed and bitten by small black flies this year, you’re not alone. The culprits of these bites are commonly referred to as black flies or buffalo gnats. The reason we are noticing so many in 2019 is likely due to favorable spring conditions that included a lot of moisture.
Know Your Mosquitoes to Protect Yourself
Mosquito trapping efforts across the state in the last seven years showed that there are over 20 species of mosquitoes occurring in South Dakota, yet only two species dominate the surveillance data: Aedes vexans and Culex tarsalis.
An identification guide to common Ticks of South Dakota
A guide to identifying common ticks in South Dakota
Common Stalk Borer Activity Estimate: June 5, 2024
In southern South Dakota, enough degree days have accumulated for common stalk borer caterpillars to begin moving from alternative hosts into corn. Fields should be monitored for leaves with signs of defoliation.
Seedcorn Maggot Degree Day Activity Estimates: June 5, 2024
Peak emergence of the second generation of seedcorn maggots is occurring in a few areas of the state. The rest of the state is between the second and third generation emergences.
Don’t Forget to Scout Canola for Flea Beetles
Canola emergence is well underway and ahead of emergence at this time in 2023. There are three species of flea beetles that commonly infest canola and feed on the leaves.
Monitor for Seedcorn Maggots in Wet Planted Fields
Current spring conditions, including wet soil and cool temperatures, could result in seedcorn maggot issues in South Dakota.
Seedcorn Maggot Degree Day Activity Estimates: May 29, 2024
Many of the northern counties are approaching enough degree days for a peak second-generation seedcorn maggot emergence to occur.
Alfalfa Weevil Activity Prediction Update: May 29, 2024
Most alfalfa weevil larvae that were observed this week were between the first and second instar, but it is likely that later instars are present in southern counties.