{"id":813,"date":"2025-04-22T17:02:03","date_gmt":"2025-04-22T17:02:03","guid":{"rendered":"https:\/\/sites.rutgers.edu\/nursery-ipm\/?p=813"},"modified":"2025-08-27T19:43:32","modified_gmt":"2025-08-27T19:43:32","slug":"red-headed-flea-beetle","status":"publish","type":"post","link":"https:\/\/sites.rutgers.edu\/nursery-ipm\/red-headed-flea-beetle\/","title":{"rendered":"Red-Headed Flea Beetle"},"content":{"rendered":"<h2><strong>Red-headed flea beetle (<em>Systena frontalis<\/em>)<\/strong><\/h2>\n<h4><strong>GDD Window (base 50): 242-600 (egg hatch) &amp; 517-1028 (adults)<\/strong><\/h4>\n<h5><\/h5>\n<h4><strong>Overview:<\/strong><\/h4>\n<ul>\n<li data-charcodes=\"45\" data-font=\"Calibri,Sans-Serif\" data-buautonum=\"8\" data-margin=\"540\" data-aria-posinset=\"1\" data-aria-level=\"1\"><span data-usefontface=\"false\" data-contrast=\"none\">Overwinter as tiny, pale yellow, oval-shaped eggs<\/span>\u200b<\/li>\n<li data-charcodes=\"45\" data-font=\"Calibri,Sans-Serif\" data-buautonum=\"8\" data-margin=\"540\" data-aria-posinset=\"2\" data-aria-level=\"1\"><b><span data-usefontface=\"false\" data-contrast=\"none\">Grubs hatch during the second half of May<\/span><\/b>\u200b<\/li>\n<li data-charcodes=\"45\" data-font=\"Calibri,Sans-Serif\" data-buautonum=\"8\" data-margin=\"540\" data-aria-posinset=\"3\" data-aria-level=\"1\"><span data-usefontface=\"false\" data-contrast=\"none\">Reddish head with shiny black thorax and abdomen<\/span>\u200b<\/li>\n<li data-charcodes=\"45\" data-font=\"Calibri,Sans-Serif\" data-buautonum=\"8\" data-margin=\"540\" data-aria-posinset=\"4\" data-aria-level=\"1\"><span data-usefontface=\"false\" data-contrast=\"none\">Enlarged femur at the hind legs allows the beetle to &#8220;hop&#8221;\u00a0<\/span>\u200b<\/li>\n<li data-charcodes=\"45\" data-font=\"Calibri,Sans-Serif\" data-buautonum=\"8\" data-margin=\"540\" data-aria-posinset=\"5\" data-aria-level=\"1\"><b><span data-usefontface=\"false\" data-contrast=\"none\">2-3 generations per season\u00a0<\/span><\/b>\u200b<\/li>\n<li data-charcodes=\"45\" data-font=\"Calibri,Sans-Serif\" data-buautonum=\"8\" data-margin=\"540\" data-aria-posinset=\"6\" data-aria-level=\"1\"><span data-usefontface=\"false\" data-contrast=\"none\">Feeding on thinner leaves produces skeletonized symptoms or a <\/span><span data-usefontface=\"false\" data-contrast=\"none\">shredded appearance<\/span>\u200b<\/li>\n<li data-charcodes=\"45\" data-font=\"Calibri,Sans-Serif\" data-buautonum=\"8\" data-margin=\"540\" data-aria-posinset=\"7\" data-aria-level=\"1\"><span data-usefontface=\"false\" data-contrast=\"none\">On thicker leaves, feeding symptoms can mimic the light-colored leaf <\/span><span data-usefontface=\"false\" data-contrast=\"none\">patterns seen from leaf miners<\/span>\u200b<\/li>\n<li data-charcodes=\"45\" data-font=\"Calibri,Sans-Serif\" data-buautonum=\"8\" data-margin=\"540\" data-aria-posinset=\"8\" data-aria-level=\"1\"><span data-usefontface=\"false\" data-contrast=\"none\">Host plants: Extensive host range<\/span>\u200b\n<ul>\n<li data-charcodes=\"111\" data-font=\"Courier New,monospace\" data-buautonum=\"8\" data-margin=\"1260\" data-aria-posinset=\"9\" data-aria-level=\"2\"><b><i><span data-usefontface=\"false\" data-contrast=\"none\">Itea<\/span><\/i><\/b><b><i><span data-usefontface=\"false\" data-contrast=\"none\">,\u00a0Weigela<\/span><\/i><\/b><b><span data-usefontface=\"false\" data-contrast=\"none\">, Hydrangea,<\/span><\/b><span data-usefontface=\"false\" data-contrast=\"none\">\u00a0<\/span><i><span data-usefontface=\"false\" data-contrast=\"none\">Rudbeckia,\u00a0S<\/span><\/i><span data-usefontface=\"false\" data-contrast=\"none\">alvia,\u00a0<\/span><i><span data-usefontface=\"false\" data-contrast=\"none\">Buddleia<\/span><\/i><span data-usefontface=\"false\" data-contrast=\"none\">, <\/span><span data-usefontface=\"false\" data-contrast=\"none\">Veronica,\u00a0<\/span><i><span data-usefontface=\"false\" data-contrast=\"none\">Coreopsis<\/span><\/i>\u200b<\/li>\n<li data-charcodes=\"111\" data-font=\"Courier New,monospace\" data-buautonum=\"8\" data-margin=\"1260\" data-aria-posinset=\"10\" data-aria-level=\"2\"><span data-usefontface=\"false\" data-contrast=\"none\">Corn, soybean, potatoes, cranberries, blueberries, smartweed, <\/span><span data-usefontface=\"false\" data-contrast=\"none\">jewelweed, Joe-Pye weed\u00a0<\/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<\/li>\n<\/ul>\n<h4><strong>Management:<\/strong><\/h4>\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 solider beetle <\/span><span data-usefontface=\"false\" data-contrast=\"none\">larvae, lacewing larvae, big-eyed bugs, <\/span><span data-usefontface=\"false\" data-contrast=\"none\">damsel bugs, beneficial <\/span><span data-usefontface=\"false\" data-contrast=\"none\">nematodes,\u00a0entomopathogenic fungi<\/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\"><b><span data-usefontface=\"false\" data-contrast=\"none\">Avoid placing susceptible plants <\/span><\/b><b><span data-usefontface=\"false\" data-contrast=\"none\">in the same area year after year<\/span><\/b>\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\">Avoid placing new crop next to &#8216;hold-<\/span><span data-usefontface=\"false\" data-contrast=\"none\">overs&#8217; from previous season\u00a0<\/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\">Systemic applications 3-4wk prior to<\/span><span data-usefontface=\"false\" data-contrast=\"none\">1st generation adults is effective<\/span><\/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\"><a href=\"https:\/\/plant-pest-advisory.rutgers.edu\/wp-content\/uploads\/2024\/04\/RHFB-430-2024-life-stages.pdf\">Please refer to this RHFB materials and timing chart<\/a>. Refer to the link for material considerations at various life stages.<\/li>\n<\/ul>\n<p><strong style=\"color: inherit;font-size: 1.2em\">Materials:<\/strong><\/p>\n<ul>\n<li style=\"font-weight: 400\" data-charcodes=\"111\" data-font=\"Courier New,monospace\" data-buautonum=\"8\" data-margin=\"540\" data-aria-posinset=\"1\" data-aria-level=\"1\"><b><span data-usefontface=\"false\" data-contrast=\"none\">Contact insecticides:<\/span><\/b><span data-usefontface=\"false\" data-contrast=\"none\">\u00a0<\/span>\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<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\">METI [21A]:\u00a0<\/span><span data-usefontface=\"false\" data-contrast=\"none\">Tolfenpyrad<\/span><\/li>\n<\/ul>\n<\/li>\n<li style=\"font-weight: 400\" data-charcodes=\"111\" data-font=\"Courier New,monospace\" data-buautonum=\"8\" data-margin=\"540\" data-aria-posinset=\"4\" data-aria-level=\"1\"><b><span data-usefontface=\"false\" data-contrast=\"none\">Systemic insecticides:<\/span><\/b><span data-usefontface=\"false\" data-contrast=\"none\">\u00a0<\/span>\u200b<span data-usefontface=\"false\" data-contrast=\"none\">(larvae only, ~June application):\u00a0<\/span>\u200b\n<ul>\n<li data-charcodes=\"111\" data-font=\"Courier New,monospace\" data-buautonum=\"8\" data-margin=\"1260\" data-aria-posinset=\"7\" data-aria-level=\"2\">Translaminar systemics:\n<ul>\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\">Organophosphates [1B] &#8211;\u00a0<\/span><span data-usefontface=\"false\" data-contrast=\"none\">Acephate<\/span>\u200b<\/li>\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\">Diamides<\/span><span data-usefontface=\"false\" data-contrast=\"none\">[28]:\u00a0<\/span><span data-usefontface=\"true\" data-contrast=\"none\">Cyclaniliprole<\/span><span data-usefontface=\"true\" data-contrast=\"none\">,\u00a0+\u00a0<\/span><span data-usefontface=\"true\" data-contrast=\"none\">Flonicamid<\/span><span data-usefontface=\"true\" data-contrast=\"none\">\u00a0[29]\u00a0<\/span><\/li>\n<\/ul>\n<\/li>\n<li>Systemics:\n<ul>\n<li data-charcodes=\"111\" data-font=\"Courier New,monospace\" data-buautonum=\"8\" data-margin=\"1170\" data-aria-posinset=\"11\" data-aria-level=\"2\"><b><span data-usefontface=\"false\" data-contrast=\"none\">Neonicotinoids [4A]:\u00a0<\/span><\/b><b><span data-usefontface=\"false\" data-contrast=\"none\">imidacloprid<\/span><\/b><b><span data-usefontface=\"false\" data-contrast=\"none\">, <\/span><\/b><span data-usefontface=\"false\" data-contrast=\"none\">dinotefuran<\/span>\u200b<\/li>\n<li data-charcodes=\"111\" data-font=\"Courier New,monospace\" data-buautonum=\"8\" data-margin=\"1170\" data-aria-posinset=\"12\" data-aria-level=\"2\"><span data-usefontface=\"false\" data-contrast=\"none\">Diamides [28]\u00a0<\/span><i><span data-usefontface=\"false\" data-contrast=\"none\">(see biorationals)<\/span><\/i><span data-usefontface=\"false\" data-contrast=\"none\">\u00a0<\/span>\u200b<span style=\"font-family: -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, 'Helvetica Neue', Arial, sans-serif;font-size: 1rem\">\u200b<\/span><\/li>\n<\/ul>\n<\/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 style=\"font-weight: 400\"><span data-usefontface=\"false\" data-contrast=\"none\">Considerations:<\/span><\/b>\u200b\n<ul style=\"font-weight: 400\">\n<li data-charcodes=\"111\" data-font=\"Courier New,monospace\" data-buautonum=\"8\" data-margin=\"1260\" data-aria-posinset=\"15\" data-aria-level=\"2\"><span data-usefontface=\"false\" data-contrast=\"none\">Apply systemic 3-4wk prior to adult <\/span><span data-usefontface=\"false\" data-contrast=\"none\">emergence (Adults =\u00a0<\/span><b><span data-usefontface=\"false\" data-contrast=\"none\">517<\/span><\/b><span data-usefontface=\"false\" data-contrast=\"none\">\u00a0GDD50)<\/span>\u200b<\/li>\n<li data-charcodes=\"111\" data-font=\"Courier New,monospace\" data-buautonum=\"8\" data-margin=\"1260\" data-aria-posinset=\"16\" data-aria-level=\"2\"><span data-usefontface=\"false\" data-contrast=\"none\">Knock-down contact insecticides will <\/span><span data-usefontface=\"false\" data-contrast=\"none\">harm non-target species,\u00a0<\/span><i><span data-usefontface=\"false\" data-contrast=\"none\">and will <\/span><\/i><i><span data-usefontface=\"false\" data-contrast=\"none\">require regular applications<\/span><\/i><\/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 soaps<\/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\">Azadirachtin\u00a0[UN] &#8211;\u00a0<\/span><i><span data-usefontface=\"false\" data-contrast=\"none\">larval <\/span><\/i><i><span data-usefontface=\"false\" data-contrast=\"none\">treatments<\/span><\/i>\u200b<\/li>\n<li data-charcodes=\"111\" data-font=\"Courier New,monospace\" data-buautonum=\"8\" data-margin=\"1170\" data-aria-posinset=\"5\" data-aria-level=\"2\"><span data-usefontface=\"false\" data-contrast=\"none\">Diamides\u00a0[28]:<\/span>\u200b\n<ul>\n<li data-charcodes=\"167\" data-font=\"Wingdings,Sans-Serif\" data-buautonum=\"8\" data-margin=\"1890\" data-aria-posinset=\"6\" data-aria-level=\"3\"><span data-usefontface=\"false\" data-contrast=\"none\">Cyantraniliprole<\/span>\u200b<\/li>\n<li data-charcodes=\"167\" data-font=\"Wingdings,Sans-Serif\" data-buautonum=\"8\" data-margin=\"1890\" data-aria-posinset=\"7\" data-aria-level=\"3\"><span data-usefontface=\"false\" data-contrast=\"none\">Chlorantraniliprole<\/span><span data-usefontface=\"false\" data-contrast=\"none\">\u00a0<\/span><\/li>\n<\/ul>\n<\/li>\n<\/ul>\n<div class=\"mceTemp\"><\/div>\n<figure id=\"attachment_814\" aria-describedby=\"caption-attachment-814\" style=\"width: 300px\" class=\"wp-caption alignnone\"><img loading=\"lazy\" decoding=\"async\" class=\"size-medium wp-image-814\" src=\"https:\/\/sites.rutgers.edu\/nursery-ipm\/wp-content\/uploads\/sites\/1396\/2025\/06\/Redheaded-flea-beetles-768x625-1-300x244.jpg\" alt=\"\" width=\"300\" height=\"244\" srcset=\"https:\/\/sites.rutgers.edu\/nursery-ipm\/wp-content\/uploads\/sites\/1396\/2025\/06\/Redheaded-flea-beetles-768x625-1-300x244.jpg 300w, https:\/\/sites.rutgers.edu\/nursery-ipm\/wp-content\/uploads\/sites\/1396\/2025\/06\/Redheaded-flea-beetles-768x625-1.jpg 768w\" sizes=\"(max-width: 300px) 100vw, 300px\" \/><figcaption id=\"caption-attachment-814\" class=\"wp-caption-text\">Photo Credit: Steven K. Rettke, Rutgers Coop. Ext<\/figcaption><\/figure>\n<p><img loading=\"lazy\" decoding=\"async\" class=\"alignnone size-medium wp-image-816\" src=\"https:\/\/sites.rutgers.edu\/nursery-ipm\/wp-content\/uploads\/sites\/1396\/2025\/06\/FleaBeetle2-300x226.jpg\" alt=\"\" width=\"300\" height=\"226\" srcset=\"https:\/\/sites.rutgers.edu\/nursery-ipm\/wp-content\/uploads\/sites\/1396\/2025\/06\/FleaBeetle2-300x226.jpg 300w, https:\/\/sites.rutgers.edu\/nursery-ipm\/wp-content\/uploads\/sites\/1396\/2025\/06\/FleaBeetle2.jpg 504w\" sizes=\"(max-width: 300px) 100vw, 300px\" \/><\/p>\n<figure id=\"attachment_817\" aria-describedby=\"caption-attachment-817\" style=\"width: 300px\" class=\"wp-caption alignnone\"><img loading=\"lazy\" decoding=\"async\" class=\"size-medium wp-image-817\" src=\"https:\/\/sites.rutgers.edu\/nursery-ipm\/wp-content\/uploads\/sites\/1396\/2025\/06\/FleaBeetle3-1024x768-1-300x225.jpg\" alt=\"\" width=\"300\" height=\"225\" srcset=\"https:\/\/sites.rutgers.edu\/nursery-ipm\/wp-content\/uploads\/sites\/1396\/2025\/06\/FleaBeetle3-1024x768-1-300x225.jpg 300w, https:\/\/sites.rutgers.edu\/nursery-ipm\/wp-content\/uploads\/sites\/1396\/2025\/06\/FleaBeetle3-1024x768-1-768x576.jpg 768w, https:\/\/sites.rutgers.edu\/nursery-ipm\/wp-content\/uploads\/sites\/1396\/2025\/06\/FleaBeetle3-1024x768-1.jpg 1024w\" sizes=\"(max-width: 300px) 100vw, 300px\" \/><figcaption id=\"caption-attachment-817\" class=\"wp-caption-text\">Photo Credit: Steven K. Rettke, Rutgers Coop. Ext<\/figcaption><\/figure>\n<figure id=\"attachment_818\" aria-describedby=\"caption-attachment-818\" style=\"width: 300px\" class=\"wp-caption alignnone\"><img loading=\"lazy\" decoding=\"async\" class=\"size-full wp-image-818\" src=\"https:\/\/sites.rutgers.edu\/nursery-ipm\/wp-content\/uploads\/sites\/1396\/2025\/06\/FleaBeetle4-300x200-1.jpg\" alt=\"\" width=\"300\" height=\"200\" \/><figcaption id=\"caption-attachment-818\" class=\"wp-caption-text\">Photo Credit: Steven K. Rettke, Rutgers Coop. Ext<\/figcaption><\/figure>\n<p><img loading=\"lazy\" decoding=\"async\" class=\"alignnone size-medium wp-image-819\" src=\"https:\/\/sites.rutgers.edu\/nursery-ipm\/wp-content\/uploads\/sites\/1396\/2025\/06\/FleaBeetle5-300x187.png\" alt=\"\" width=\"300\" height=\"187\" srcset=\"https:\/\/sites.rutgers.edu\/nursery-ipm\/wp-content\/uploads\/sites\/1396\/2025\/06\/FleaBeetle5-300x187.png 300w, https:\/\/sites.rutgers.edu\/nursery-ipm\/wp-content\/uploads\/sites\/1396\/2025\/06\/FleaBeetle5.png 514w\" sizes=\"(max-width: 300px) 100vw, 300px\" \/><\/p>\n<div class=\"mceTemp\"><\/div>\n<h6><\/h6>\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>Red-headed flea beetle (Systena frontalis) GDD Window (base 50): 242-600 (egg hatch) &amp; 517-1028 (adults) Overview: Overwinter as tiny, pale yellow, oval-shaped eggs\u200b Grubs hatch during the second half of &hellip; <a href=\"https:\/\/sites.rutgers.edu\/nursery-ipm\/red-headed-flea-beetle\/\" class=\"\">Read More<\/a><\/p>\n","protected":false},"author":3407,"featured_media":815,"comment_status":"closed","ping_status":"closed","sticky":false,"template":"","format":"standard","meta":{"_acf_changed":false,"footnotes":""},"categories":[15],"tags":[],"class_list":["post-813","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>Red-Headed Flea Beetle - 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\/red-headed-flea-beetle\/\" \/>\n<meta property=\"og:locale\" content=\"en_US\" \/>\n<meta property=\"og:type\" content=\"article\" \/>\n<meta property=\"og:title\" content=\"Red-Headed Flea Beetle - Nursery IPM\" \/>\n<meta property=\"og:description\" content=\"Red-headed flea beetle (Systena frontalis) GDD Window (base 50): 242-600 (egg hatch) &amp; 517-1028 (adults) Overview: Overwinter as tiny, pale yellow, oval-shaped eggs\u200b Grubs hatch during the second half of &hellip; Read More\" \/>\n<meta property=\"og:url\" content=\"https:\/\/sites.rutgers.edu\/nursery-ipm\/red-headed-flea-beetle\/\" \/>\n<meta property=\"og:site_name\" content=\"Nursery IPM\" \/>\n<meta property=\"article:published_time\" content=\"2025-04-22T17:02:03+00:00\" \/>\n<meta property=\"article:modified_time\" content=\"2025-08-27T19:43:32+00:00\" \/>\n<meta property=\"og:image\" content=\"https:\/\/sites.rutgers.edu\/nursery-ipm\/wp-content\/uploads\/sites\/1396\/2025\/06\/FleaBeetle1.jpg\" \/>\n\t<meta property=\"og:image:width\" content=\"564\" \/>\n\t<meta property=\"og:image:height\" content=\"424\" \/>\n\t<meta property=\"og:image:type\" content=\"image\/jpeg\" \/>\n<meta name=\"author\" content=\"Erin O. Quinn\" \/>\n<meta name=\"twitter:card\" content=\"summary_large_image\" \/>\n<meta name=\"twitter:label1\" content=\"Written by\" \/>\n\t<meta name=\"twitter:data1\" content=\"Erin O. Quinn\" \/>\n\t<meta name=\"twitter:label2\" content=\"Est. reading time\" \/>\n\t<meta name=\"twitter:data2\" content=\"2 minutes\" \/>\n<script type=\"application\/ld+json\" class=\"yoast-schema-graph\">{\"@context\":\"https:\/\/schema.org\",\"@graph\":[{\"@type\":\"WebPage\",\"@id\":\"https:\/\/sites.rutgers.edu\/nursery-ipm\/red-headed-flea-beetle\/\",\"url\":\"https:\/\/sites.rutgers.edu\/nursery-ipm\/red-headed-flea-beetle\/\",\"name\":\"Red-Headed Flea Beetle - Nursery IPM\",\"isPartOf\":{\"@id\":\"https:\/\/sites.rutgers.edu\/nursery-ipm\/#website\"},\"primaryImageOfPage\":{\"@id\":\"https:\/\/sites.rutgers.edu\/nursery-ipm\/red-headed-flea-beetle\/#primaryimage\"},\"image\":{\"@id\":\"https:\/\/sites.rutgers.edu\/nursery-ipm\/red-headed-flea-beetle\/#primaryimage\"},\"thumbnailUrl\":\"https:\/\/sites.rutgers.edu\/nursery-ipm\/wp-content\/uploads\/sites\/1396\/2025\/06\/FleaBeetle1.jpg\",\"datePublished\":\"2025-04-22T17:02:03+00:00\",\"dateModified\":\"2025-08-27T19:43:32+00:00\",\"author\":{\"@id\":\"https:\/\/sites.rutgers.edu\/nursery-ipm\/#\/schema\/person\/1a070508b880ef7fe0dc180e168e64cf\"},\"breadcrumb\":{\"@id\":\"https:\/\/sites.rutgers.edu\/nursery-ipm\/red-headed-flea-beetle\/#breadcrumb\"},\"inLanguage\":\"en-US\",\"potentialAction\":[{\"@type\":\"ReadAction\",\"target\":[\"https:\/\/sites.rutgers.edu\/nursery-ipm\/red-headed-flea-beetle\/\"]}]},{\"@type\":\"ImageObject\",\"inLanguage\":\"en-US\",\"@id\":\"https:\/\/sites.rutgers.edu\/nursery-ipm\/red-headed-flea-beetle\/#primaryimage\",\"url\":\"https:\/\/sites.rutgers.edu\/nursery-ipm\/wp-content\/uploads\/sites\/1396\/2025\/06\/FleaBeetle1.jpg\",\"contentUrl\":\"https:\/\/sites.rutgers.edu\/nursery-ipm\/wp-content\/uploads\/sites\/1396\/2025\/06\/FleaBeetle1.jpg\",\"width\":564,\"height\":424,\"caption\":\"Photo Credit: Steven K. Rettke, Rutgers Coop. Ext\"},{\"@type\":\"BreadcrumbList\",\"@id\":\"https:\/\/sites.rutgers.edu\/nursery-ipm\/red-headed-flea-beetle\/#breadcrumb\",\"itemListElement\":[{\"@type\":\"ListItem\",\"position\":1,\"name\":\"Home\",\"item\":\"https:\/\/sites.rutgers.edu\/nursery-ipm\/\"},{\"@type\":\"ListItem\",\"position\":2,\"name\":\"Red-Headed Flea Beetle\"}]},{\"@type\":\"WebSite\",\"@id\":\"https:\/\/sites.rutgers.edu\/nursery-ipm\/#website\",\"url\":\"https:\/\/sites.rutgers.edu\/nursery-ipm\/\",\"name\":\"Nursery IPM\",\"description\":\"\",\"potentialAction\":[{\"@type\":\"SearchAction\",\"target\":{\"@type\":\"EntryPoint\",\"urlTemplate\":\"https:\/\/sites.rutgers.edu\/nursery-ipm\/?s={search_term_string}\"},\"query-input\":{\"@type\":\"PropertyValueSpecification\",\"valueRequired\":true,\"valueName\":\"search_term_string\"}}],\"inLanguage\":\"en-US\"},{\"@type\":\"Person\",\"@id\":\"https:\/\/sites.rutgers.edu\/nursery-ipm\/#\/schema\/person\/1a070508b880ef7fe0dc180e168e64cf\",\"name\":\"Erin O. Quinn\",\"image\":{\"@type\":\"ImageObject\",\"inLanguage\":\"en-US\",\"@id\":\"https:\/\/sites.rutgers.edu\/nursery-ipm\/#\/schema\/person\/image\/\",\"url\":\"https:\/\/secure.gravatar.com\/avatar\/a5e6879be80394bab29d973d1210e67f?s=96&d=mm&r=g\",\"contentUrl\":\"https:\/\/secure.gravatar.com\/avatar\/a5e6879be80394bab29d973d1210e67f?s=96&d=mm&r=g\",\"caption\":\"Erin O. Quinn\"},\"url\":\"https:\/\/sites.rutgers.edu\/nursery-ipm\/author\/eoq1\/\"}]}<\/script>\n<!-- \/ Yoast SEO plugin. -->","yoast_head_json":{"title":"Red-Headed Flea Beetle - Nursery IPM","robots":{"index":"index","follow":"follow","max-snippet":"max-snippet:-1","max-image-preview":"max-image-preview:large","max-video-preview":"max-video-preview:-1"},"canonical":"https:\/\/sites.rutgers.edu\/nursery-ipm\/red-headed-flea-beetle\/","og_locale":"en_US","og_type":"article","og_title":"Red-Headed Flea Beetle - Nursery IPM","og_description":"Red-headed flea beetle (Systena frontalis) GDD Window (base 50): 242-600 (egg hatch) &amp; 517-1028 (adults) Overview: Overwinter as tiny, pale yellow, oval-shaped eggs\u200b Grubs hatch during the second half of &hellip; Read More","og_url":"https:\/\/sites.rutgers.edu\/nursery-ipm\/red-headed-flea-beetle\/","og_site_name":"Nursery IPM","article_published_time":"2025-04-22T17:02:03+00:00","article_modified_time":"2025-08-27T19:43:32+00:00","og_image":[{"width":564,"height":424,"url":"https:\/\/sites.rutgers.edu\/nursery-ipm\/wp-content\/uploads\/sites\/1396\/2025\/06\/FleaBeetle1.jpg","type":"image\/jpeg"}],"author":"Erin O. Quinn","twitter_card":"summary_large_image","twitter_misc":{"Written by":"Erin O. Quinn","Est. reading time":"2 minutes"},"schema":{"@context":"https:\/\/schema.org","@graph":[{"@type":"WebPage","@id":"https:\/\/sites.rutgers.edu\/nursery-ipm\/red-headed-flea-beetle\/","url":"https:\/\/sites.rutgers.edu\/nursery-ipm\/red-headed-flea-beetle\/","name":"Red-Headed Flea Beetle - Nursery IPM","isPartOf":{"@id":"https:\/\/sites.rutgers.edu\/nursery-ipm\/#website"},"primaryImageOfPage":{"@id":"https:\/\/sites.rutgers.edu\/nursery-ipm\/red-headed-flea-beetle\/#primaryimage"},"image":{"@id":"https:\/\/sites.rutgers.edu\/nursery-ipm\/red-headed-flea-beetle\/#primaryimage"},"thumbnailUrl":"https:\/\/sites.rutgers.edu\/nursery-ipm\/wp-content\/uploads\/sites\/1396\/2025\/06\/FleaBeetle1.jpg","datePublished":"2025-04-22T17:02:03+00:00","dateModified":"2025-08-27T19:43:32+00:00","author":{"@id":"https:\/\/sites.rutgers.edu\/nursery-ipm\/#\/schema\/person\/1a070508b880ef7fe0dc180e168e64cf"},"breadcrumb":{"@id":"https:\/\/sites.rutgers.edu\/nursery-ipm\/red-headed-flea-beetle\/#breadcrumb"},"inLanguage":"en-US","potentialAction":[{"@type":"ReadAction","target":["https:\/\/sites.rutgers.edu\/nursery-ipm\/red-headed-flea-beetle\/"]}]},{"@type":"ImageObject","inLanguage":"en-US","@id":"https:\/\/sites.rutgers.edu\/nursery-ipm\/red-headed-flea-beetle\/#primaryimage","url":"https:\/\/sites.rutgers.edu\/nursery-ipm\/wp-content\/uploads\/sites\/1396\/2025\/06\/FleaBeetle1.jpg","contentUrl":"https:\/\/sites.rutgers.edu\/nursery-ipm\/wp-content\/uploads\/sites\/1396\/2025\/06\/FleaBeetle1.jpg","width":564,"height":424,"caption":"Photo Credit: Steven K. Rettke, Rutgers Coop. Ext"},{"@type":"BreadcrumbList","@id":"https:\/\/sites.rutgers.edu\/nursery-ipm\/red-headed-flea-beetle\/#breadcrumb","itemListElement":[{"@type":"ListItem","position":1,"name":"Home","item":"https:\/\/sites.rutgers.edu\/nursery-ipm\/"},{"@type":"ListItem","position":2,"name":"Red-Headed Flea Beetle"}]},{"@type":"WebSite","@id":"https:\/\/sites.rutgers.edu\/nursery-ipm\/#website","url":"https:\/\/sites.rutgers.edu\/nursery-ipm\/","name":"Nursery IPM","description":"","potentialAction":[{"@type":"SearchAction","target":{"@type":"EntryPoint","urlTemplate":"https:\/\/sites.rutgers.edu\/nursery-ipm\/?s={search_term_string}"},"query-input":{"@type":"PropertyValueSpecification","valueRequired":true,"valueName":"search_term_string"}}],"inLanguage":"en-US"},{"@type":"Person","@id":"https:\/\/sites.rutgers.edu\/nursery-ipm\/#\/schema\/person\/1a070508b880ef7fe0dc180e168e64cf","name":"Erin O. Quinn","image":{"@type":"ImageObject","inLanguage":"en-US","@id":"https:\/\/sites.rutgers.edu\/nursery-ipm\/#\/schema\/person\/image\/","url":"https:\/\/secure.gravatar.com\/avatar\/a5e6879be80394bab29d973d1210e67f?s=96&d=mm&r=g","contentUrl":"https:\/\/secure.gravatar.com\/avatar\/a5e6879be80394bab29d973d1210e67f?s=96&d=mm&r=g","caption":"Erin O. Quinn"},"url":"https:\/\/sites.rutgers.edu\/nursery-ipm\/author\/eoq1\/"}]}},"_links":{"self":[{"href":"https:\/\/sites.rutgers.edu\/nursery-ipm\/wp-json\/wp\/v2\/posts\/813"}],"collection":[{"href":"https:\/\/sites.rutgers.edu\/nursery-ipm\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/sites.rutgers.edu\/nursery-ipm\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/sites.rutgers.edu\/nursery-ipm\/wp-json\/wp\/v2\/users\/3407"}],"replies":[{"embeddable":true,"href":"https:\/\/sites.rutgers.edu\/nursery-ipm\/wp-json\/wp\/v2\/comments?post=813"}],"version-history":[{"count":2,"href":"https:\/\/sites.rutgers.edu\/nursery-ipm\/wp-json\/wp\/v2\/posts\/813\/revisions"}],"predecessor-version":[{"id":823,"href":"https:\/\/sites.rutgers.edu\/nursery-ipm\/wp-json\/wp\/v2\/posts\/813\/revisions\/823"}],"wp:featuredmedia":[{"embeddable":true,"href":"https:\/\/sites.rutgers.edu\/nursery-ipm\/wp-json\/wp\/v2\/media\/815"}],"wp:attachment":[{"href":"https:\/\/sites.rutgers.edu\/nursery-ipm\/wp-json\/wp\/v2\/media?parent=813"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/sites.rutgers.edu\/nursery-ipm\/wp-json\/wp\/v2\/categories?post=813"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/sites.rutgers.edu\/nursery-ipm\/wp-json\/wp\/v2\/tags?post=813"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}