{"id":1167,"date":"2025-07-22T15:34:59","date_gmt":"2025-07-22T15:34:59","guid":{"rendered":"https:\/\/sites.rutgers.edu\/nursery-ipm\/?p=1167"},"modified":"2025-08-27T19:34:38","modified_gmt":"2025-08-27T19:34:38","slug":"dogwood-sawfly","status":"publish","type":"post","link":"https:\/\/sites.rutgers.edu\/nursery-ipm\/dogwood-sawfly\/","title":{"rendered":"Dogwood Sawfly"},"content":{"rendered":"<h2><strong>Dogwood Sawfly (<em>Macremphytus tarsatus<\/em>)<\/strong><\/h2>\n<h4><strong>GDD Window (base 50): 1151-1500<\/strong><\/h4>\n<h5><\/h5>\n<h4><strong>Overview:<\/strong>\u200b\u200b\u200b<\/h4>\n<ul>\n<li data-charcodes=\"8226\" data-font=\"Arial,Sans-Serif\" data-buautonum=\"8\" data-margin=\"450\" data-aria-posinset=\"1\" data-aria-level=\"1\">Adults are slender, shiny, black,\u00a0wasp insects\u00a0&amp; emerge\u00a0May to July\u00a0\u00a0\u200b<\/li>\n<li data-charcodes=\"8226\" data-font=\"Arial,Sans-Serif\" data-buautonum=\"8\" data-margin=\"450\" data-aria-posinset=\"2\" data-aria-level=\"1\">Females insert up to 100 eggs into a leaf using an ovipositor\u00a0\u200b<\/li>\n<li data-charcodes=\"111\" data-font=\"Courier New,monospace\" data-buautonum=\"8\" data-margin=\"1170\" data-aria-posinset=\"3\" data-aria-level=\"2\">Eggs cause bumps in the leaves which turn brown\u00a0\u00a0\u200b<\/li>\n<li data-charcodes=\"8226\" data-font=\"Arial,Sans-Serif\" data-buautonum=\"8\" data-margin=\"450\" data-aria-posinset=\"4\" data-aria-level=\"1\">Young larvae feed in groups along the margins of the leaves\u00a0\u200b<\/li>\n<li data-charcodes=\"8226\" data-font=\"Arial,Sans-Serif\" data-buautonum=\"8\" data-margin=\"450\" data-aria-posinset=\"5\" data-aria-level=\"1\">First instar larvae resemble small, greenish-yellow tadpoles\u00a0\u200b<\/li>\n<li data-charcodes=\"8226\" data-font=\"Arial,Sans-Serif\" data-buautonum=\"8\" data-margin=\"450\" data-aria-posinset=\"6\" data-aria-level=\"1\">Second and third instar larvae have a smooth, amber-colored body with black rectangular markings along the top and sides\u00a0\u00a0\u200b<\/li>\n<li data-charcodes=\"8226\" data-font=\"Arial,Sans-Serif\" data-buautonum=\"8\" data-margin=\"450\" data-aria-posinset=\"7\" data-aria-level=\"1\">Maturing larvae have a white powdery coating over the surface of their bodies \u200b<\/li>\n<li data-charcodes=\"8226\" data-font=\"Arial,Sans-Serif\" data-buautonum=\"8\" data-margin=\"450\" data-aria-posinset=\"8\" data-aria-level=\"1\">Final instar larvae are about an inch long, and cream in color with black spots, they eventually stop feeding in groups and disperse throughout the tree to feed individually\u00a0\u00a0\u200b<\/li>\n<li data-charcodes=\"8226\" data-font=\"Arial,Sans-Serif\" data-buautonum=\"8\" data-margin=\"450\" data-aria-posinset=\"9\" data-aria-level=\"1\">Larvae and shed skins can resemble bird droppings or caterpillars\u00a0\u200b<\/li>\n<li data-charcodes=\"8226\" data-font=\"Arial,Sans-Serif\" data-buautonum=\"8\" data-margin=\"450\" data-aria-posinset=\"10\" data-aria-level=\"1\">Mature larvae bore into soft wood, forming cells\u00a0\u00a0\u200b<\/li>\n<li data-charcodes=\"8226\" data-font=\"Arial,Sans-Serif\" data-buautonum=\"8\" data-margin=\"450\" data-aria-posinset=\"11\" data-aria-level=\"1\">One generation per year\u200b<\/li>\n<li data-charcodes=\"8226\" data-font=\"Arial,Sans-Serif\" data-buautonum=\"8\" data-margin=\"450\" data-aria-posinset=\"12\" data-aria-level=\"1\">Young larvae will initially skeletonize leaves\u00a0\u00a0\u200b<\/li>\n<li data-charcodes=\"8226\" data-font=\"Arial,Sans-Serif\" data-buautonum=\"8\" data-margin=\"450\" data-aria-posinset=\"13\" data-aria-level=\"1\">Larger larvae will consume the entire leaf area except for the mid-veins\u200b<\/li>\n<li data-charcodes=\"8226\" data-font=\"Arial,Sans-Serif\" data-buautonum=\"8\" data-margin=\"540\" data-aria-posinset=\"14\" data-aria-level=\"1\"><b><span data-usefontface=\"false\" data-contrast=\"none\">Host plants: dogwoods\u00a0<\/span><\/b>\u200b<\/li>\n<\/ul>\n<p><strong style=\"color: inherit;font-size: 1.44em\">Management:<\/strong><\/p>\n<h5><strong>Cultural Practices:<\/strong><\/h5>\n<ul>\n<li data-charcodes=\"111\" data-font=\"Courier New,monospace\" data-buautonum=\"8\" data-margin=\"1260\" data-aria-posinset=\"2\" data-aria-level=\"2\"><b><span data-usefontface=\"false\" data-contrast=\"none\">Natural predators:<\/span><\/b><span data-usefontface=\"false\" data-contrast=\"none\">\u00a0 birds, spiders, <\/span><span data-usefontface=\"false\" data-contrast=\"none\">predatory stink bugs, wasps<\/span>\u200b<\/li>\n<li data-charcodes=\"111\" data-font=\"Courier New,monospace\" data-buautonum=\"8\" data-margin=\"1260\" data-aria-posinset=\"3\" data-aria-level=\"2\">Prune out or handpick when within reach\u00a0\u200b<\/li>\n<li data-charcodes=\"111\" data-font=\"Courier New,monospace\" data-buautonum=\"8\" data-margin=\"1260\" data-aria-posinset=\"4\" data-aria-level=\"2\"><span data-usefontface=\"false\" data-contrast=\"none\">Encourage natural predators by <\/span><span data-usefontface=\"false\" data-contrast=\"none\">providing food, water, and shelter<\/span>\u200b<\/li>\n<li data-charcodes=\"111\" data-font=\"Courier New,monospace\" data-buautonum=\"8\" data-margin=\"1260\" data-aria-posinset=\"5\" data-aria-level=\"2\"><span data-usefontface=\"false\" data-contrast=\"none\">Reduce plant stress\u00a0<\/span>\u200b<\/li>\n<li data-charcodes=\"111\" data-font=\"Courier New,monospace\" data-buautonum=\"8\" data-margin=\"1260\" data-aria-posinset=\"6\" data-aria-level=\"2\"><span data-usefontface=\"false\" data-contrast=\"none\">Dispose of fallen leaves<\/span>\u200b<\/li>\n<li data-charcodes=\"111\" data-font=\"Courier New,monospace\" data-buautonum=\"8\" data-margin=\"1260\" data-aria-posinset=\"7\" data-aria-level=\"2\"><span data-usefontface=\"false\" data-contrast=\"none\">Allow for air circulation and sunlight <\/span><span data-usefontface=\"false\" data-contrast=\"none\">penetration\u00a0<\/span>\u200b<\/li>\n<\/ul>\n<h5><strong>Materials:<\/strong><\/h5>\n<ul>\n<li data-charcodes=\"111\" data-font=\"Courier New,monospace\" data-buautonum=\"8\" data-margin=\"450\" data-aria-posinset=\"1\" data-aria-level=\"1\"><b><span data-usefontface=\"false\" data-contrast=\"none\">Contact insecticides:<\/span><\/b>\u200b\n<ul>\n<li data-charcodes=\"111\" data-font=\"Courier New,monospace\" data-buautonum=\"8\" data-margin=\"1260\" data-aria-posinset=\"2\" data-aria-level=\"2\"><span data-usefontface=\"false\" data-contrast=\"none\">Pyrethroids [3]: &#8211;<\/span><span data-usefontface=\"false\" data-contrast=\"none\">thrins<\/span>\u200b<\/li>\n<li data-charcodes=\"111\" data-font=\"Courier New,monospace\" data-buautonum=\"8\" data-margin=\"1260\" data-aria-posinset=\"3\" data-aria-level=\"2\"><span data-usefontface=\"false\" data-contrast=\"none\">Carbamates [1A]: carbaryl<\/span>\u200b<\/li>\n<\/ul>\n<\/li>\n<li data-charcodes=\"111\" data-font=\"Courier New,monospace\" data-buautonum=\"8\" data-margin=\"450\" data-aria-posinset=\"4\" data-aria-level=\"1\"><b><span data-usefontface=\"false\" data-contrast=\"none\">Systemic insecticides:<\/span><\/b>\u200b\n<ul>\n<li data-charcodes=\"111\" data-font=\"Courier New,monospace\" data-buautonum=\"8\" data-margin=\"1260\" data-aria-posinset=\"5\" data-aria-level=\"2\"><span data-usefontface=\"false\" data-contrast=\"none\">Neonicotinoids [4A]: imidacloprid, <\/span><span data-usefontface=\"false\" data-contrast=\"none\">dinotefuran, acetamiprid<\/span>\u200b<\/li>\n<li data-charcodes=\"111\" data-font=\"Courier New,monospace\" data-buautonum=\"8\" data-margin=\"1260\" data-aria-posinset=\"6\" data-aria-level=\"2\"><span data-usefontface=\"false\" data-contrast=\"none\">Organophosphates [1B]:\u00a0<\/span><span data-usefontface=\"false\" data-contrast=\"none\">acephate <\/span><span data-usefontface=\"false\" data-contrast=\"none\">(translaminar)\u00a0<\/span>\u200b<\/li>\n<\/ul>\n<\/li>\n<li data-charcodes=\"111\" data-font=\"Courier New,monospace\" data-buautonum=\"8\" data-margin=\"540\" data-aria-posinset=\"7\" data-aria-level=\"1\"><b><span data-usefontface=\"false\" data-contrast=\"none\">Considerations:<\/span><\/b>\u200b\n<ul>\n<li data-charcodes=\"111\" data-font=\"Courier New,monospace\" data-buautonum=\"8\" data-margin=\"1260\" data-aria-posinset=\"8\" data-aria-level=\"2\"><span data-usefontface=\"false\" data-contrast=\"none\">Will harm non-target species<\/span>\u200b<\/li>\n<\/ul>\n<\/li>\n<\/ul>\n<h5><strong>Biorationals:<\/strong><\/h5>\n<ul>\n<li data-charcodes=\"111\" data-font=\"Courier New,monospace\" data-buautonum=\"8\" data-margin=\"1260\" data-aria-posinset=\"2\" data-aria-level=\"2\"><span data-usefontface=\"false\" data-contrast=\"none\">Horticultural oil<\/span>\u200b<\/li>\n<li data-charcodes=\"111\" data-font=\"Courier New,monospace\" data-buautonum=\"8\" data-margin=\"1260\" data-aria-posinset=\"3\" data-aria-level=\"2\"><span data-usefontface=\"false\" data-contrast=\"none\">Insecticidal soap\u00a0<\/span>\u200b<\/li>\n<li data-charcodes=\"111\" data-font=\"Courier New,monospace\" data-buautonum=\"8\" data-margin=\"1260\" data-aria-posinset=\"4\" data-aria-level=\"2\"><span data-usefontface=\"false\" data-contrast=\"none\">Spinosad<\/span>\u200b<\/li>\n<li data-charcodes=\"111\" data-font=\"Courier New,monospace\" data-buautonum=\"8\" data-margin=\"1260\" data-aria-posinset=\"5\" data-aria-level=\"2\"><span data-usefontface=\"false\" data-contrast=\"none\">Azadirachtin<\/span>\u200b<\/li>\n<li data-charcodes=\"111\" data-font=\"Courier New,monospace\" data-buautonum=\"8\" data-margin=\"1260\" data-aria-posinset=\"6\" data-aria-level=\"2\"><span data-usefontface=\"false\" data-contrast=\"none\">Acetamiprid<\/span><span style=\"font-family: -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, 'Helvetica Neue', Arial, sans-serif;font-size: 1rem\">\u200b<\/span><\/li>\n<\/ul>\n<div class=\"mceTemp\"><\/div>\n<p><strong style=\"color: inherit;font-size: 1.44em\">Resources:<\/strong><\/p>\n<p><a class=\"btn btn-primary\" href=\"https:\/\/plant-pest-advisory.rutgers.edu\/landscape-pest-notes-for-july-2023\/\" target=\"_blank\" rel=\"noopener\">Landscape Pest Notes for July 2023 &#8211; PPA<\/a><\/p>\n<p>&nbsp;<\/p>\n<div class=\"mceTemp\"><\/div>\n<p><img loading=\"lazy\" decoding=\"async\" class=\"alignnone size-medium wp-image-1169\" src=\"https:\/\/sites.rutgers.edu\/nursery-ipm\/wp-content\/uploads\/sites\/1396\/2025\/07\/Dogwood-Sawfly-Damage-Glenwood-2019-1B-300x200.jpg\" alt=\"\" width=\"300\" height=\"200\" srcset=\"https:\/\/sites.rutgers.edu\/nursery-ipm\/wp-content\/uploads\/sites\/1396\/2025\/07\/Dogwood-Sawfly-Damage-Glenwood-2019-1B-300x200.jpg 300w, https:\/\/sites.rutgers.edu\/nursery-ipm\/wp-content\/uploads\/sites\/1396\/2025\/07\/Dogwood-Sawfly-Damage-Glenwood-2019-1B.jpg 640w\" sizes=\"(max-width: 300px) 100vw, 300px\" \/> <img loading=\"lazy\" decoding=\"async\" class=\"alignnone size-medium wp-image-1170\" src=\"https:\/\/sites.rutgers.edu\/nursery-ipm\/wp-content\/uploads\/sites\/1396\/2025\/07\/Dogwood-Sawfly-White-Phase-4-300x200.jpg\" alt=\"\" width=\"300\" height=\"200\" srcset=\"https:\/\/sites.rutgers.edu\/nursery-ipm\/wp-content\/uploads\/sites\/1396\/2025\/07\/Dogwood-Sawfly-White-Phase-4-300x200.jpg 300w, https:\/\/sites.rutgers.edu\/nursery-ipm\/wp-content\/uploads\/sites\/1396\/2025\/07\/Dogwood-Sawfly-White-Phase-4.jpg 640w\" sizes=\"(max-width: 300px) 100vw, 300px\" \/><\/p>\n<div class=\"mceTemp\"><\/div>\n<div class=\"mceTemp\"><\/div>\n<div class=\"mceTemp\"><\/div>\n<div class=\"mceTemp\"><\/div>\n<div class=\"mceTemp\"><\/div>\n<h6><span class=\"LineBox SCXP56887253 BCX0\"><span class=\"TextRun SCXP56887253 BCX0\" lang=\"EN-US\" xml:lang=\"EN-US\" data-usefontface=\"false\" data-contrast=\"none\"><span class=\"NormalTextRun SCXP56887253 BCX0\">Disclaimer<\/span><\/span><span class=\"TextRun SCXP56887253 BCX0\" lang=\"EN-US\" xml:lang=\"EN-US\" data-usefontface=\"false\" data-contrast=\"none\"><span class=\"NormalTextRun SCXP56887253 BCX0\"> &#8211; Materials do not cover all possible control scenarios and are intended for licensed professionals. Tradenames do not imply\u00a0<\/span><\/span><\/span><span class=\"LineBox SCXP56887253 BCX0\"><span class=\"TextRun SCXP56887253 BCX0\" lang=\"EN-US\" xml:lang=\"EN-US\" data-usefontface=\"false\" data-contrast=\"none\"><span class=\"NormalTextRun SCXP56887253 BCX0\">endorsement and are used as examples. You must strictly follow the label for each compound prior to use. Rutgers is not responsible for<\/span><\/span><\/span><span class=\"LineBox SCXP56887253 BCX0\"><span class=\"TextRun SCXP56887253 BCX0\" lang=\"EN-US\" xml:lang=\"EN-US\" data-usefontface=\"false\" data-contrast=\"none\"><span class=\"NormalTextRun SCXP56887253 BCX0\">m is used materials or damages thereof. The label is the law. Labels will provide detailed information on use and restrictions. Additionally, <\/span><\/span><\/span><span class=\"LineBox SCXP56887253 BCX0\"><span class=\"TextRun SCXP56887253 BCX0\" lang=\"EN-US\" xml:lang=\"EN-US\" data-usefontface=\"false\" data-contrast=\"none\"><span class=\"NormalTextRun SCXP56887253 BCX0\">application intervals, compatibility, surfactant use, PHI, PPE, important and other key information is described in detail. Always discuss\u00a0<\/span><\/span><\/span><span class=\"LineBox SCXP56887253 BCX0\"><span class=\"TextRun SCXP56887253 BCX0\" lang=\"EN-US\" xml:lang=\"EN-US\" data-usefontface=\"false\" data-contrast=\"none\"><span class=\"NormalTextRun SCXP56887253 BCX0\">treatments with your local agents.\u00a0<\/span><\/span><span class=\"TextRun SCXP56887253 BCX0\" lang=\"EN-US\" xml:lang=\"EN-US\" data-scheme-color=\"@C00000,,\" data-usefontface=\"false\" data-contrast=\"none\"><span class=\"NormalTextRun SCXP56887253 BCX0\">Note: Neonicotinoids can only be legally applied in commercial agriculture settings by licensed <\/span><\/span><\/span><span class=\"LineBox SCXP56887253 BCX0\"><span class=\"TextRun SCXP56887253 BCX0\" lang=\"EN-US\" xml:lang=\"EN-US\" data-scheme-color=\"@C00000,,\" data-usefontface=\"false\" data-contrast=\"none\"><span class=\"NormalTextRun SCXP56887253 BCX0\">applicators.\u00a0<\/span><\/span><span class=\"TextRun SCXP56887253 BCX0\" lang=\"EN-US\" xml:lang=\"EN-US\" data-scheme-color=\"@3B7F23,9,18:76000\" data-usefontface=\"false\" data-contrast=\"none\"><span class=\"NormalTextRun SCXP56887253 BCX0\">Guidelines and recommendations made in this presentation are specific to the state of New Jersey.\u00a0<\/span><\/span><\/span><\/h6>\n<p>&nbsp;<\/p>\n","protected":false},"excerpt":{"rendered":"<p>Dogwood Sawfly (Macremphytus tarsatus) GDD Window (base 50): 1151-1500 Overview:\u200b\u200b\u200b Adults are slender, shiny, black,\u00a0wasp insects\u00a0&amp; emerge\u00a0May to July\u00a0\u00a0\u200b Females insert up to 100 eggs into a leaf using an &hellip; <a href=\"https:\/\/sites.rutgers.edu\/nursery-ipm\/dogwood-sawfly\/\" class=\"\">Read More<\/a><\/p>\n","protected":false},"author":3407,"featured_media":1168,"comment_status":"closed","ping_status":"closed","sticky":false,"template":"","format":"standard","meta":{"_acf_changed":false,"footnotes":""},"categories":[15],"tags":[],"class_list":["post-1167","post","type-post","status-publish","format-standard","has-post-thumbnail","hentry","category-pests"],"acf":[],"yoast_head":"<!-- This site is optimized with the Yoast SEO plugin v23.5 - https:\/\/yoast.com\/wordpress\/plugins\/seo\/ -->\n<title>Dogwood Sawfly - Nursery IPM<\/title>\n<meta name=\"robots\" content=\"index, follow, max-snippet:-1, max-image-preview:large, max-video-preview:-1\" \/>\n<link rel=\"canonical\" href=\"https:\/\/sites.rutgers.edu\/nursery-ipm\/dogwood-sawfly\/\" \/>\n<meta property=\"og:locale\" content=\"en_US\" \/>\n<meta property=\"og:type\" content=\"article\" \/>\n<meta property=\"og:title\" content=\"Dogwood Sawfly - Nursery IPM\" \/>\n<meta property=\"og:description\" content=\"Dogwood Sawfly (Macremphytus tarsatus) GDD Window (base 50): 1151-1500 Overview:\u200b\u200b\u200b Adults are slender, shiny, black,\u00a0wasp insects\u00a0&amp; emerge\u00a0May to July\u00a0\u00a0\u200b Females insert up to 100 eggs into a leaf using an &hellip; Read More\" \/>\n<meta property=\"og:url\" content=\"https:\/\/sites.rutgers.edu\/nursery-ipm\/dogwood-sawfly\/\" \/>\n<meta property=\"og:site_name\" content=\"Nursery IPM\" \/>\n<meta property=\"article:published_time\" content=\"2025-07-22T15:34:59+00:00\" \/>\n<meta property=\"article:modified_time\" content=\"2025-08-27T19:34:38+00:00\" \/>\n<meta property=\"og:image\" content=\"https:\/\/sites.rutgers.edu\/nursery-ipm\/wp-content\/uploads\/sites\/1396\/2025\/07\/1-Dogwood-Sawfly-Glenwood-2019-1.jpg\" \/>\n\t<meta property=\"og:image:width\" content=\"720\" \/>\n\t<meta property=\"og:image:height\" content=\"480\" \/>\n\t<meta property=\"og:image:type\" content=\"image\/jpeg\" \/>\n<meta name=\"author\" content=\"Erin O. 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