{"id":2329,"date":"2010-03-04T14:13:06","date_gmt":"2010-03-04T19:13:06","guid":{"rendered":"https:\/\/extension.umaine.edu\/cranberries\/?page_id=2329"},"modified":"2025-04-10T18:01:07","modified_gmt":"2025-04-10T18:01:07","slug":"red-headed-flea-beetle","status":"publish","type":"page","link":"https:\/\/extension.umaine.edu\/cranberries\/grower-services\/insects\/red-headed-flea-beetle\/","title":{"rendered":"Red-headed\/Redheaded Flea Beetle"},"content":{"rendered":"<p><strong>Order: <\/strong>Coleoptera || <strong>Family: <\/strong>Chrysomelidae<br \/>\n<strong>Scientific Name: <\/strong><em>Systena frontalis <\/em>(F.)<\/p>\n<hr \/>\n\n\t\t<style type=\"text\/css\">\n\t\t\t#gallery-1 {\n\t\t\t\tmargin: auto;\n\t\t\t}\n\t\t\t#gallery-1 .gallery-item {\n\t\t\t\tfloat: left;\n\t\t\t\tmargin-top: 10px;\n\t\t\t\ttext-align: center;\n\t\t\t\twidth: 20%;\n\t\t\t}\n\t\t\t#gallery-1 img {\n\t\t\t\tborder: 2px solid #cfcfcf;\n\t\t\t}\n\t\t\t#gallery-1 .gallery-caption {\n\t\t\t\tmargin-left: 0;\n\t\t\t}\n\t\t\t\/* see gallery_shortcode() in wp-includes\/media.php *\/\n\t\t<\/style>\n\t\t<div id='gallery-1' class='gallery galleryid-2329 gallery-columns-5 gallery-size-thumbnail'><dl class='gallery-item'>\n\t\t\t<dt class='gallery-icon landscape'>\n\t\t\t\t<a href='https:\/\/extension.umaine.edu\/cranberries\/wp-content\/uploads\/sites\/40\/2010\/03\/Red-headed-Flea-Beetle-Late-August-2009a.jpg'><img loading=\"lazy\" decoding=\"async\" width=\"150\" height=\"150\" src=\"https:\/\/extension.umaine.edu\/cranberries\/wp-content\/uploads\/sites\/40\/2010\/03\/Red-headed-Flea-Beetle-Late-August-2009a-150x150.jpg\" class=\"attachment-thumbnail size-thumbnail\" alt=\"A Red-headed Flea Beetle on the rim of a 12&quot;-diameter insect sweep net and preparing to jump away; they are strong jumpers)\" aria-describedby=\"gallery-1-2167\" srcset=\"https:\/\/extension.umaine.edu\/cranberries\/wp-content\/uploads\/sites\/40\/2010\/03\/Red-headed-Flea-Beetle-Late-August-2009a-150x150.jpg 150w, https:\/\/extension.umaine.edu\/cranberries\/wp-content\/uploads\/sites\/40\/2010\/03\/Red-headed-Flea-Beetle-Late-August-2009a-32x32.jpg 32w\" sizes=\"auto, (max-width: 150px) 100vw, 150px\" \/><\/a>\n\t\t\t<\/dt>\n\t\t\t\t<dd class='wp-caption-text gallery-caption' id='gallery-1-2167'>\n\t\t\t\tRedheaded flea beetle on the rim of a 12&#8243;-diameter insect sweep net (Be looking for these guys late in the season, August and September)\n\t\t\t\t<\/dd><\/dl><dl class='gallery-item'>\n\t\t\t<dt class='gallery-icon landscape'>\n\t\t\t\t<a href='https:\/\/extension.umaine.edu\/cranberries\/wp-content\/uploads\/sites\/40\/2010\/07\/RedheadedFleaBeetle-072110-closeup.jpg'><img loading=\"lazy\" decoding=\"async\" width=\"150\" height=\"150\" src=\"https:\/\/extension.umaine.edu\/cranberries\/wp-content\/uploads\/sites\/40\/2010\/07\/RedheadedFleaBeetle-072110-closeup-150x150.jpg\" class=\"attachment-thumbnail size-thumbnail\" alt=\"RedheadedFleaBeetle-072110-closeup\" aria-describedby=\"gallery-1-2790\" srcset=\"https:\/\/extension.umaine.edu\/cranberries\/wp-content\/uploads\/sites\/40\/2010\/07\/RedheadedFleaBeetle-072110-closeup-150x150.jpg 150w, https:\/\/extension.umaine.edu\/cranberries\/wp-content\/uploads\/sites\/40\/2010\/07\/RedheadedFleaBeetle-072110-closeup-32x32.jpg 32w\" sizes=\"auto, (max-width: 150px) 100vw, 150px\" \/><\/a>\n\t\t\t<\/dt>\n\t\t\t\t<dd class='wp-caption-text gallery-caption' id='gallery-1-2790'>\n\t\t\t\tRedheaded flea beetle inside a sweep net\n\t\t\t\t<\/dd><\/dl><dl class='gallery-item'>\n\t\t\t<dt class='gallery-icon landscape'>\n\t\t\t\t<a href='https:\/\/extension.umaine.edu\/cranberries\/wp-content\/uploads\/sites\/40\/2025\/04\/Redheaded-Flea-Beetle-PS.jpg'><img loading=\"lazy\" decoding=\"async\" width=\"150\" height=\"150\" src=\"https:\/\/extension.umaine.edu\/cranberries\/wp-content\/uploads\/sites\/40\/2025\/04\/Redheaded-Flea-Beetle-PS-150x150.jpg\" class=\"attachment-thumbnail size-thumbnail\" alt=\"Photo of a single Redheaded Flea Beetle (Systena frontalis) (the patch of red on the top of its head is apparent in this photo)\" aria-describedby=\"gallery-1-7020\" srcset=\"https:\/\/extension.umaine.edu\/cranberries\/wp-content\/uploads\/sites\/40\/2025\/04\/Redheaded-Flea-Beetle-PS-150x150.jpg 150w, https:\/\/extension.umaine.edu\/cranberries\/wp-content\/uploads\/sites\/40\/2025\/04\/Redheaded-Flea-Beetle-PS-32x32.jpg 32w\" sizes=\"auto, (max-width: 150px) 100vw, 150px\" \/><\/a>\n\t\t\t<\/dt>\n\t\t\t\t<dd class='wp-caption-text gallery-caption' id='gallery-1-7020'>\n\t\t\t\tRedheaded Flea Beetle (<i>Systena frontalis<\/i>) (the patch of red on the top of its head is apparent in this photo)\n\t\t\t\t<\/dd><\/dl><dl class='gallery-item'>\n\t\t\t<dt class='gallery-icon landscape'>\n\t\t\t\t<a href='https:\/\/extension.umaine.edu\/cranberries\/wp-content\/uploads\/sites\/40\/2010\/03\/RH-Flea-Beetles-Late-August-2009.jpg'><img loading=\"lazy\" decoding=\"async\" width=\"150\" height=\"150\" src=\"https:\/\/extension.umaine.edu\/cranberries\/wp-content\/uploads\/sites\/40\/2010\/03\/RH-Flea-Beetles-Late-August-2009-150x150.jpg\" class=\"attachment-thumbnail size-thumbnail\" alt=\"Several Red-headed Flea Beetles (Late August 2009) (inside a sweep net)\" aria-describedby=\"gallery-1-2346\" srcset=\"https:\/\/extension.umaine.edu\/cranberries\/wp-content\/uploads\/sites\/40\/2010\/03\/RH-Flea-Beetles-Late-August-2009-150x150.jpg 150w, https:\/\/extension.umaine.edu\/cranberries\/wp-content\/uploads\/sites\/40\/2010\/03\/RH-Flea-Beetles-Late-August-2009-32x32.jpg 32w\" sizes=\"auto, (max-width: 150px) 100vw, 150px\" \/><\/a>\n\t\t\t<\/dt>\n\t\t\t\t<dd class='wp-caption-text gallery-caption' id='gallery-1-2346'>\n\t\t\t\tSeveral Redheaded flea beetles (Late August 2009) (inside a sweep net)\n\t\t\t\t<\/dd><\/dl><dl class='gallery-item'>\n\t\t\t<dt class='gallery-icon landscape'>\n\t\t\t\t<a href='https:\/\/extension.umaine.edu\/cranberries\/wp-content\/uploads\/sites\/40\/2010\/03\/Red-headed-Flea-Beetles-Late-August-2009b.jpg'><img loading=\"lazy\" decoding=\"async\" width=\"150\" height=\"150\" src=\"https:\/\/extension.umaine.edu\/cranberries\/wp-content\/uploads\/sites\/40\/2010\/03\/Red-headed-Flea-Beetles-Late-August-2009b-150x150.jpg\" class=\"attachment-thumbnail size-thumbnail\" alt=\"Three Red-headed Flea Beetles (Late August 2009) (inside a sweepnet)\" aria-describedby=\"gallery-1-2171\" srcset=\"https:\/\/extension.umaine.edu\/cranberries\/wp-content\/uploads\/sites\/40\/2010\/03\/Red-headed-Flea-Beetles-Late-August-2009b-150x150.jpg 150w, https:\/\/extension.umaine.edu\/cranberries\/wp-content\/uploads\/sites\/40\/2010\/03\/Red-headed-Flea-Beetles-Late-August-2009b-32x32.jpg 32w\" sizes=\"auto, (max-width: 150px) 100vw, 150px\" \/><\/a>\n\t\t\t<\/dt>\n\t\t\t\t<dd class='wp-caption-text gallery-caption' id='gallery-1-2171'>\n\t\t\t\tThree Redheaded flea beetles (Late August 2009) (inside a sweep net)\n\t\t\t\t<\/dd><\/dl><br style=\"clear: both\" \/><dl class='gallery-item'>\n\t\t\t<dt class='gallery-icon portrait'>\n\t\t\t\t<a href='https:\/\/extension.umaine.edu\/cranberries\/wp-content\/uploads\/sites\/40\/2025\/04\/Redheaded-Flea-Beetles-091114.jpg'><img loading=\"lazy\" decoding=\"async\" width=\"150\" height=\"150\" src=\"https:\/\/extension.umaine.edu\/cranberries\/wp-content\/uploads\/sites\/40\/2025\/04\/Redheaded-Flea-Beetles-091114-150x150.jpg\" class=\"attachment-thumbnail size-thumbnail\" alt=\"small glass vial with about 14 Redheaded Flea Beetles inside with a single cranberry and a portion of a cranberry stem with leaves (photo taken in Columbia Falls, ME; 9\/11\/2014)\" aria-describedby=\"gallery-1-7024\" srcset=\"https:\/\/extension.umaine.edu\/cranberries\/wp-content\/uploads\/sites\/40\/2025\/04\/Redheaded-Flea-Beetles-091114-150x150.jpg 150w, https:\/\/extension.umaine.edu\/cranberries\/wp-content\/uploads\/sites\/40\/2025\/04\/Redheaded-Flea-Beetles-091114-300x300.jpg 300w, https:\/\/extension.umaine.edu\/cranberries\/wp-content\/uploads\/sites\/40\/2025\/04\/Redheaded-Flea-Beetles-091114-400x400.jpg 400w, https:\/\/extension.umaine.edu\/cranberries\/wp-content\/uploads\/sites\/40\/2025\/04\/Redheaded-Flea-Beetles-091114-600x600.jpg 600w, https:\/\/extension.umaine.edu\/cranberries\/wp-content\/uploads\/sites\/40\/2025\/04\/Redheaded-Flea-Beetles-091114-32x32.jpg 32w\" sizes=\"auto, (max-width: 150px) 100vw, 150px\" \/><\/a>\n\t\t\t<\/dt>\n\t\t\t\t<dd class='wp-caption-text gallery-caption' id='gallery-1-7024'>\n\t\t\t\tRedheaded Flea Beetles (Columbia Falls, ME; 9\/11\/2014)\n\t\t\t\t<\/dd><\/dl><dl class='gallery-item'>\n\t\t\t<dt class='gallery-icon landscape'>\n\t\t\t\t<a href='https:\/\/extension.umaine.edu\/cranberries\/wp-content\/uploads\/sites\/40\/2025\/04\/Redheaded-Flea-Beetle-082709.jpg'><img loading=\"lazy\" decoding=\"async\" width=\"150\" height=\"150\" src=\"https:\/\/extension.umaine.edu\/cranberries\/wp-content\/uploads\/sites\/40\/2025\/04\/Redheaded-Flea-Beetle-082709-150x150.jpg\" class=\"attachment-thumbnail size-thumbnail\" alt=\"Redheaded Flea Beetle sitting on an unripe\/green cranberry (Columbia Falls, ME; 8\/27\/2009)\" aria-describedby=\"gallery-1-7022\" srcset=\"https:\/\/extension.umaine.edu\/cranberries\/wp-content\/uploads\/sites\/40\/2025\/04\/Redheaded-Flea-Beetle-082709-150x150.jpg 150w, https:\/\/extension.umaine.edu\/cranberries\/wp-content\/uploads\/sites\/40\/2025\/04\/Redheaded-Flea-Beetle-082709-300x300.jpg 300w, https:\/\/extension.umaine.edu\/cranberries\/wp-content\/uploads\/sites\/40\/2025\/04\/Redheaded-Flea-Beetle-082709-400x400.jpg 400w, https:\/\/extension.umaine.edu\/cranberries\/wp-content\/uploads\/sites\/40\/2025\/04\/Redheaded-Flea-Beetle-082709-600x600.jpg 600w, https:\/\/extension.umaine.edu\/cranberries\/wp-content\/uploads\/sites\/40\/2025\/04\/Redheaded-Flea-Beetle-082709-32x32.jpg 32w\" sizes=\"auto, (max-width: 150px) 100vw, 150px\" \/><\/a>\n\t\t\t<\/dt>\n\t\t\t\t<dd class='wp-caption-text gallery-caption' id='gallery-1-7022'>\n\t\t\t\tRedheaded Flea Beetle sitting on a cranberry (Columbia Falls, ME; 8\/27\/2009)\n\t\t\t\t<\/dd><\/dl><dl class='gallery-item'>\n\t\t\t<dt class='gallery-icon portrait'>\n\t\t\t\t<a href='https:\/\/extension.umaine.edu\/cranberries\/wp-content\/uploads\/sites\/40\/2014\/09\/Red-headed-Flea-Beetle-leaf-injury-Sept9th-2014-Maine.jpg'><img loading=\"lazy\" decoding=\"async\" width=\"150\" height=\"150\" src=\"https:\/\/extension.umaine.edu\/cranberries\/wp-content\/uploads\/sites\/40\/2014\/09\/Red-headed-Flea-Beetle-leaf-injury-Sept9th-2014-Maine-150x150.jpg\" class=\"attachment-thumbnail size-thumbnail\" alt=\"Red-headed Flea Beetle leaf injury (September 9th, 2014 Maine)\" aria-describedby=\"gallery-1-4241\" srcset=\"https:\/\/extension.umaine.edu\/cranberries\/wp-content\/uploads\/sites\/40\/2014\/09\/Red-headed-Flea-Beetle-leaf-injury-Sept9th-2014-Maine-150x150.jpg 150w, https:\/\/extension.umaine.edu\/cranberries\/wp-content\/uploads\/sites\/40\/2014\/09\/Red-headed-Flea-Beetle-leaf-injury-Sept9th-2014-Maine-32x32.jpg 32w\" sizes=\"auto, (max-width: 150px) 100vw, 150px\" \/><\/a>\n\t\t\t<\/dt>\n\t\t\t\t<dd class='wp-caption-text gallery-caption' id='gallery-1-4241'>\n\t\t\t\tMaine cranberry leaves injured by Redheaded flea beetles (Photographed 9\/9\/2014) (adults feed on primarily the undersides of the leaves)\n\t\t\t\t<\/dd><\/dl><dl class='gallery-item'>\n\t\t\t<dt class='gallery-icon landscape'>\n\t\t\t\t<a href='https:\/\/extension.umaine.edu\/cranberries\/wp-content\/uploads\/sites\/40\/2025\/04\/Single-Leaf-with-Redheaded-Flea-Beetle-feeding-injury.jpg'><img loading=\"lazy\" decoding=\"async\" width=\"150\" height=\"150\" src=\"https:\/\/extension.umaine.edu\/cranberries\/wp-content\/uploads\/sites\/40\/2025\/04\/Single-Leaf-with-Redheaded-Flea-Beetle-feeding-injury-150x150.jpg\" class=\"attachment-thumbnail size-thumbnail\" alt=\"A cranberry leaf showing redheaded flea beetle feeding injury to the underside of the leaf (Columbia Falls, ME; 8\/27\/2009)\" aria-describedby=\"gallery-1-7021\" srcset=\"https:\/\/extension.umaine.edu\/cranberries\/wp-content\/uploads\/sites\/40\/2025\/04\/Single-Leaf-with-Redheaded-Flea-Beetle-feeding-injury-150x150.jpg 150w, https:\/\/extension.umaine.edu\/cranberries\/wp-content\/uploads\/sites\/40\/2025\/04\/Single-Leaf-with-Redheaded-Flea-Beetle-feeding-injury-32x32.jpg 32w\" sizes=\"auto, (max-width: 150px) 100vw, 150px\" \/><\/a>\n\t\t\t<\/dt>\n\t\t\t\t<dd class='wp-caption-text gallery-caption' id='gallery-1-7021'>\n\t\t\t\tA cranberry leaf showing redheaded flea beetle feeding injury to the underside of the leaf (Columbia Falls, ME; 8\/27\/2009)\n\t\t\t\t<\/dd><\/dl>\n\t\t\t<br style='clear: both' \/>\n\t\t<\/div>\n\n<hr \/>\n<p><strong>General Notes:<\/strong> Redheaded flea beetles have at least 40 different host plants, including cranberry. In cranberry, the adult beetles feed primarily on the undersides of leaves, usually leaving the top leaf surface intact. They will also gouge berries, however. Overall, when their populations are high, their feeding can significantly impact bud development for the subsequent year. \u00a0<strong>Populations of the adults are often very patchy within any given cranberry planting.<\/strong><\/p>\n<p><strong>History of Occurrence in Maine:<\/strong> UMaine Extension first noticed this pest in Maine cranberry at two sites in 2009 with a heavy outbreak at one of those sites; increased to three sites in 2010, with fairly high numbers at two of the sites. They were found at the vast majority of Maine&#8217;s cranberry sites in 2014 at very high numbers throughout the entire month of September; often find them routinely now each year on Maine cranberry acreage, starting in August and continuing throughout the month of September.<\/p>\n<p><strong>Action Threshold for flea beetles:\u00a0<\/strong>There is no \u2018firm\u2019 or foolproof Action Threshold (AT) for this pest, probably because the adults can be<em> very<\/em> patchy on a bed, but if you are averaging sweep net counts of <strong>15 or more<\/strong> <strong>per 25 sweeps<\/strong>, consider taking action against them.\u00a0 As stated previously, a high level of leaf damage can significantly impact bud development the following season.\u00a0 Since the beetles can be so patchy, be sure that you don\u2019t just sweep or look for them in one portion of a bed; make sure&#8211;<em>as with most of our cranberry insect pests<\/em>&#8211;that you have good representation of the entire cranberry area when you are checking for them.\u00a0 If you are consistently getting 15 or more redheaded flea beetles per set of 25 sweeps across the entire acreage, one should be concerned. Control efforts are likely warranted in that situation.<\/p>\n<p><strong>Description: <\/strong>As visible from the photos above, they are small insects (3.5 to 5 mm long), and are shiny and mostly black. There is a slightly reddish tint to their head that is visible when you look closely or especially when sunlight catches on them just right (look closely at the 2nd and 3rd photos above). Notice, too, their thick hind legs, which look a little like small grasshopper legs. \u00a0This is what makes them good jumpers, and hence is the source of the &#8216;flea&#8217; that&#8217;s part of their name, but they can also fly as well.<\/p>\n<p><strong>Life Cycle:<\/strong> There is only a single generation per year. \u00a0They overwinter in the egg stage and although the eggs hatch reportedly in May (probably not until June for much of Maine), the adults don&#8217;t begin to show up on cranberry beds until late in July (or sometimes not until August). The adults remain on the beds for a couple of months, feeding, mating, and, when the time is right <em>(late August &#8211; early September)<\/em>, laying their eggs, which are deposited just beneath the soil surface.<\/p>\n<p><strong>Additional Information:<\/strong><\/p>\n<ul>\n<li><strong><a href=\"https:\/\/fruit.wisc.edu\/wp-content\/uploads\/sites\/36\/2011\/05\/Redheaded-Flea-Beetle.pdf\" target=\"_blank\" rel=\"noopener\">Redheaded Flea Beetle [pdf]<\/a><\/strong> (includes a list of several of their other host plants) (Univ. of Wisconsin &#8211; Madison)<\/li>\n<li><a href=\"https:\/\/bugguide.net\/node\/view\/84132\" target=\"_blank\" rel=\"noopener\"><strong>Red-headed Flea Beetle<\/strong><\/a> (BugGuide.net)<\/li>\n<\/ul>\n<hr \/>\n<p><strong>Control:<\/strong> For specific and current control recommendations for Maine for this pest, please refer to the\u00a0<a href=\"https:\/\/extension.umaine.edu\/cranberries\/grower-services\/cranberry-ipm-guide\/\">Maine Cranberry Pest Management Guide<\/a>.<\/p>\n<hr \/>\n","protected":false},"excerpt":{"rendered":"<p>Order: Coleoptera || Family: Chrysomelidae Scientific Name: Systena frontalis (F.) General Notes: Redheaded flea beetles have at least 40 different host plants, including cranberry. In cranberry, the adult beetles feed primarily on the undersides of leaves, usually leaving the top leaf surface intact. They will also gouge berries, however. Overall, when their populations are high, [&hellip;]<\/p>\n","protected":false},"author":60,"featured_media":0,"parent":461,"menu_order":11,"comment_status":"closed","ping_status":"closed","template":"templates\/page-withsidebar.php","meta":{"_kad_blocks_custom_css":"","_kad_blocks_head_custom_js":"","_kad_blocks_body_custom_js":"","_kad_blocks_footer_custom_js":"","_monsterinsights_skip_tracking":false,"_monsterinsights_sitenote_active":false,"_monsterinsights_sitenote_note":"","_monsterinsights_sitenote_category":0,"footnotes":""},"class_list":["post-2329","page","type-page","status-publish","hentry"],"yoast_head":"<!-- This site is optimized with the Yoast SEO plugin v27.2 - https:\/\/yoast.com\/product\/yoast-seo-wordpress\/ -->\n<title>Red-headed\/Redheaded Flea Beetle - Cooperative Extension: Cranberries - University of Maine Cooperative Extension<\/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:\/\/extension.umaine.edu\/cranberries\/grower-services\/insects\/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\/Redheaded Flea Beetle - Cooperative Extension: Cranberries - University of Maine Cooperative Extension\" \/>\n<meta property=\"og:description\" content=\"Order: Coleoptera || Family: Chrysomelidae Scientific Name: Systena frontalis (F.) General Notes: Redheaded flea beetles have at least 40 different host plants, including cranberry. In cranberry, the adult beetles feed primarily on the undersides of leaves, usually leaving the top leaf surface intact. They will also gouge berries, however. Overall, when their populations are high, [&hellip;]\" \/>\n<meta property=\"og:url\" content=\"https:\/\/extension.umaine.edu\/cranberries\/grower-services\/insects\/red-headed-flea-beetle\/\" \/>\n<meta property=\"og:site_name\" content=\"Cooperative Extension: Cranberries\" \/>\n<meta property=\"article:modified_time\" content=\"2025-04-10T18:01:07+00:00\" \/>\n<meta property=\"og:image\" content=\"https:\/\/extension.umaine.edu\/cranberries\/wp-content\/uploads\/sites\/40\/2010\/03\/Red-headed-Flea-Beetle-Late-August-2009a-150x150.jpg\" \/>\n<meta name=\"twitter:card\" content=\"summary_large_image\" \/>\n<meta name=\"twitter:label1\" content=\"Est. reading time\" \/>\n\t<meta name=\"twitter:data1\" content=\"3 minutes\" \/>\n<script type=\"application\/ld+json\" class=\"yoast-schema-graph\">{\"@context\":\"https:\/\/schema.org\",\"@graph\":[{\"@type\":\"WebPage\",\"@id\":\"https:\/\/extension.umaine.edu\/cranberries\/grower-services\/insects\/red-headed-flea-beetle\/\",\"url\":\"https:\/\/extension.umaine.edu\/cranberries\/grower-services\/insects\/red-headed-flea-beetle\/\",\"name\":\"Red-headed\/Redheaded Flea Beetle - Cooperative Extension: Cranberries - University of Maine Cooperative Extension\",\"isPartOf\":{\"@id\":\"https:\/\/extension.umaine.edu\/cranberries\/#website\"},\"datePublished\":\"2010-03-04T19:13:06+00:00\",\"dateModified\":\"2025-04-10T18:01:07+00:00\",\"breadcrumb\":{\"@id\":\"https:\/\/extension.umaine.edu\/cranberries\/grower-services\/insects\/red-headed-flea-beetle\/#breadcrumb\"},\"inLanguage\":\"en-US\",\"potentialAction\":[{\"@type\":\"ReadAction\",\"target\":[\"https:\/\/extension.umaine.edu\/cranberries\/grower-services\/insects\/red-headed-flea-beetle\/\"]}]},{\"@type\":\"BreadcrumbList\",\"@id\":\"https:\/\/extension.umaine.edu\/cranberries\/grower-services\/insects\/red-headed-flea-beetle\/#breadcrumb\",\"itemListElement\":[{\"@type\":\"ListItem\",\"position\":1,\"name\":\"Home\",\"item\":\"https:\/\/extension.umaine.edu\/cranberries\/\"},{\"@type\":\"ListItem\",\"position\":2,\"name\":\"Grower Services\",\"item\":\"https:\/\/extension.umaine.edu\/cranberries\/grower-services\/\"},{\"@type\":\"ListItem\",\"position\":3,\"name\":\"Insects Associated with Maine Cranberries:\",\"item\":\"https:\/\/extension.umaine.edu\/cranberries\/grower-services\/insects\/\"},{\"@type\":\"ListItem\",\"position\":4,\"name\":\"Red-headed\/Redheaded Flea Beetle\"}]},{\"@type\":\"WebSite\",\"@id\":\"https:\/\/extension.umaine.edu\/cranberries\/#website\",\"url\":\"https:\/\/extension.umaine.edu\/cranberries\/\",\"name\":\"Cooperative Extension: Cranberries\",\"description\":\"Information you can use. 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General Notes: Redheaded flea beetles have at least 40 different host plants, including cranberry. In cranberry, the adult beetles feed primarily on the undersides of leaves, usually leaving the top leaf surface intact. They will also gouge berries, however. 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