https://soybeangallmidge.org/new-page daily 1.0 2026-06-26 https://images.squarespace-cdn.com/content/v1/5da2457001106247e5fb9ff2/1599338751429-XBNEJN58HMURT6O7B5CR/IMG_0779.jpg Home https://images.squarespace-cdn.com/content/v1/5da2457001106247e5fb9ff2/4872d6e5-ddf7-4e0a-a192-09940673505b/IMG_3749.jpeg Home - Soybean Gall Midge Larvae and Wilting Plants Update June 26, 2026 With adult emergence occurring in late May and early June in Nebraska and Iowa, soybean gall midge larvae have now been detected at all monitoring sites in both states. See map below for details. In Nebraska, dead and dying soybean plants have been documented at three monitoring sites in Lancaster County and a field in Seward County. While the incidence of dead plants remains low (<3%), it is expected to increase over the next week as hot weather puts additional stress on soybean. See map below for details. Although no adult emergence has been detected in South Dakota or Minnesota, larvae have been found in Minnehaha County, South Dakota, where a small number of wilting and dead soybean plants have also been observed. Now is a good time to scout soybean fields for the presence of larvae, particularly along field edges adjacent to last year's soybean fields. Once significant larval infestations are present, insecticide applications are not recommended because larvae are protected within the stem, making it difficult for insecticides to reach them effectively. To learn more about scouting, visit the Scouting tab above or use the link below: Scouting for Soybean Gall Midge Larvae 2026 Season Notes Adult emergence began May 29 in Nebraska and June 1 in Iowa. No adult detections in South Dakota or Minnesota. Larvae were first detected June 8 in Lancaster County, Nebraska, June 17 in Dallas County, Iowa and June 26 in Minnehaha County, South Dakota. Larvae are now present at all monitored sites in Nebraska and Iowa. Wilting and dead plants were documented in Lancaster County, Nebraska on June 22 and in Minnehaha County, South Dakota on June 26. https://images.squarespace-cdn.com/content/v1/5da2457001106247e5fb9ff2/54f66048-0795-49c2-a05b-1e17039ae2b1/Current+6.26.2026.png Home - Make it stand out Whatever it is, the way you tell your story online can make all the difference. https://images.squarespace-cdn.com/content/v1/5da2457001106247e5fb9ff2/ff8847ec-8123-4c59-a041-8b78e3b68ae2/Soybean+6.26.2026.png Home - Make it stand out Whatever it is, the way you tell your story online can make all the difference. https://images.squarespace-cdn.com/content/v1/5da2457001106247e5fb9ff2/5e95a556-712a-4031-9202-6d0e11f931c4/Staging+and+Fissures.png Home - Make it stand out Soybean development stages with the presence of fissures below the cotyledonary node at the V2 stage. White and orange larvae can be found in infested plants at about 5-10 days after adult activity. https://images.squarespace-cdn.com/content/v1/5da2457001106247e5fb9ff2/1752868698182-N1KNDI3S8T9583E14R95/IMG_2749.jpg Home https://images.squarespace-cdn.com/content/v1/5da2457001106247e5fb9ff2/1752253771495-EN2JOLHL5AB642QVCX8Y/IMG_2673.jpg Home https://images.squarespace-cdn.com/content/v1/5da2457001106247e5fb9ff2/1752253774175-LMCNNWD5RNHZW97GX6QL/IMG_2676.jpg Home https://images.squarespace-cdn.com/content/v1/5da2457001106247e5fb9ff2/7fa2f02f-d9b6-4275-a560-b6dcc0bf4244/IMG_0826.jpg Home - Make it stand out Wilting and dead plants from soybean gall midge feeding in Lancaster County, NE. Photo taken on July 19th, 2024. Credit: Justin McMechan https://images.squarespace-cdn.com/content/v1/5da2457001106247e5fb9ff2/e06b595d-b6be-4659-9506-c50863a80314/IMG_2118.jpg Home - White larvae found on soybean plants near Mead, NE on June 14th, 2023. Figure 1. Cass county field with significant plant injury from soybean gall midge. Photo taken by Justin McMechan. https://images.squarespace-cdn.com/content/v1/5da2457001106247e5fb9ff2/1599345236494-VNXPGKLROKYDDTNYVINX/IMG_072.jpg Home - Unmanned aerial vehicle photo of soybean gall midge injured field in Cass County, NE taken on August 26th, 2020. Figure 2. https://images.squarespace-cdn.com/content/v1/5da2457001106247e5fb9ff2/8a5bfccb-2031-4b93-adcc-3fa06e70713f/SGM+Larvae+2023.jpg Home White and orange larvae found on soybean near Mead, NE on June 19th, 2023 https://images.squarespace-cdn.com/content/v1/5da2457001106247e5fb9ff2/1591220396560-46D9GB1AZBWIH838FTTL/SGM+photo.png Home - Significant field injury and 3rd instar larvae on soybean plant https://images.squarespace-cdn.com/content/v1/5da2457001106247e5fb9ff2/1591227801141-2BD5MKPGBKXECHQJ03JO/IMG_0521.jpeg Home - Soybean Gall Midge Adult Emergence Cages in Last Year's Soybean Field https://images.squarespace-cdn.com/content/v1/5da2457001106247e5fb9ff2/1591227916810-MKJNIW8MOT6GIZVM67W2/white+sgm.png Home - Early Instars of Soybean Gall Midge https://images.squarespace-cdn.com/content/v1/5da2457001106247e5fb9ff2/1591220426103-K24T9Q0DZRC2J52V56KJ/IMG_3401+%281%29.jpg Home - Final instars and blackening of soybean plant at base from feeding https://images.squarespace-cdn.com/content/v1/5da2457001106247e5fb9ff2/1591220494167-X1BBANUCVV4FMWSUK3W8/Figure+2.jpg Home - Adult Soybean Gall Midge: Size and Key Characteristics https://soybeangallmidge.org/scouting-for-soybean-gall-midge daily 0.75 2023-02-20 https://soybeangallmidge.org/soybean-gall-midge-distribution daily 0.75 2026-04-02 https://images.squarespace-cdn.com/content/v1/5da2457001106247e5fb9ff2/c2df0406-be8a-4d2c-ba3f-e4a8909da74d/2025+US+Map+SGM+8.21.2025.png Soybean Gall Midge Distribution 185 counties from 7 states (ND, MN, SD, IA, NE, KS, and MO) have been documented as infested as of 8/21/2025. Color coding indicates the first year infestation was documented in the county, and is not a reflection of the intensity of infestation or injury from SGM. Counties with white stripes in NE and MN are areas where SGM was only on sweet clover. 2025: 5 counties in Iowa. 3 counties in Minnesota. Dashed lines indicate that larvae have only been found on sweet clover. https://soybeangallmidge.org/contacts daily 0.75 2026-02-23 https://images.squarespace-cdn.com/content/v1/5da2457001106247e5fb9ff2/1599393933550-OOHAC7JYWHLQB4J5EJS3/McMechan%2BPhoto.jpg Contacts - Justin McMechan - Crop Protection and Cropping Systems Specialist 105B Entomology Hall, Lincoln, NE 68583-0816 402-472-2312 Email: justin.mcmechan@unl.edu Twitter: @justinmcmechan https://images.squarespace-cdn.com/content/v1/5da2457001106247e5fb9ff2/1599393849383-YSKRTOLUTI2A45QVFLE3/Erin+Hodgson.jpg Contacts - Erin Hodgson - Extension Entomologist 2005 ATRB, 2213 Pammel Dr., Ames IA 50011 Email: ewh@iastate.edu | Phone: 515-294-2847 Twitter: @erinwhodgson https://images.squarespace-cdn.com/content/v1/5da2457001106247e5fb9ff2/1599395273322-Z63WOETRFXI3GYODJ8W4/Robert+Koch.jpg Contacts - Robert Koch - Extension Entomologist 530B Hodson Hall, 1980 Folwell Ave., St. Paul, MN 55108 Email: koch0125@umn.edu https://images.squarespace-cdn.com/content/v1/5da2457001106247e5fb9ff2/1599417263877-91JFX3IUNWPD00U0TEOK/Adam%2BVarenhorst.jpg Contacts - Adam Varenhorst - Extension Field Crop Entomologist 308 Berg Agricultural Hall, Brookings, SD Email: Adam.Varenhorst@sdstate.edu | Phone: 605-688-6854 Twitter: @SDSUExt_Insects https://soybeangallmidge.org/sign-up-for-network-updates daily 0.75 2023-02-20 https://soybeangallmidge.org/notifications daily 0.75 2026-02-04 https://soybeangallmidge.org/soybean-gall-midge-series-videos daily 0.75 2026-04-27