{"id":1830,"date":"2010-02-25T12:41:04","date_gmt":"2010-02-25T17:41:04","guid":{"rendered":"https:\/\/extension.umaine.edu\/cranberries\/?page_id=1830"},"modified":"2019-06-11T18:48:44","modified_gmt":"2019-06-11T18:48:44","slug":"false-armyworm","status":"publish","type":"page","link":"https:\/\/extension.umaine.edu\/cranberries\/grower-services\/insects\/false-armyworm\/","title":{"rendered":"False Armyworm"},"content":{"rendered":"<div><strong>Order:<\/strong> Lepidoptera || <strong>Family: <\/strong>Noctuidae<\/div>\n<div><strong>Scientific Name: <\/strong><em>Xylena nupera<\/em> (Lintner)<\/div>\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: 16%;\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-1830 gallery-columns-6 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\/02\/FalseArmyworm2001.jpg'><img loading=\"lazy\" decoding=\"async\" width=\"150\" height=\"150\" src=\"https:\/\/extension.umaine.edu\/cranberries\/wp-content\/uploads\/sites\/40\/2010\/02\/FalseArmyworm2001-150x150.jpg\" class=\"attachment-thumbnail size-thumbnail\" alt=\"A False Armyworm larva crawling on the rim of a U.S. dime\" aria-describedby=\"gallery-1-1840\" srcset=\"https:\/\/extension.umaine.edu\/cranberries\/wp-content\/uploads\/sites\/40\/2010\/02\/FalseArmyworm2001-150x150.jpg 150w, https:\/\/extension.umaine.edu\/cranberries\/wp-content\/uploads\/sites\/40\/2010\/02\/FalseArmyworm2001-32x32.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-1-1840'>\n\t\t\t\tFalse Armyworm Caterpillar (early instar)\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\/02\/False-Armyworms.jpg'><img loading=\"lazy\" decoding=\"async\" width=\"150\" height=\"150\" src=\"https:\/\/extension.umaine.edu\/cranberries\/wp-content\/uploads\/sites\/40\/2010\/02\/False-Armyworms-150x150.jpg\" class=\"attachment-thumbnail size-thumbnail\" alt=\"Four mid-sized false armyworm caterpillars beside the tip of a cranberry stem, for size comparison\/scale.\" aria-describedby=\"gallery-1-1839\" srcset=\"https:\/\/extension.umaine.edu\/cranberries\/wp-content\/uploads\/sites\/40\/2010\/02\/False-Armyworms-150x150.jpg 150w, https:\/\/extension.umaine.edu\/cranberries\/wp-content\/uploads\/sites\/40\/2010\/02\/False-Armyworms-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-1-1839'>\n\t\t\t\tFalse Armyworm Caterpillars (early instars)\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\/02\/False-Armyworm.jpg'><img loading=\"lazy\" decoding=\"async\" width=\"150\" height=\"150\" src=\"https:\/\/extension.umaine.edu\/cranberries\/wp-content\/uploads\/sites\/40\/2010\/02\/False-Armyworm-150x150.jpg\" class=\"attachment-thumbnail size-thumbnail\" alt=\"Photo of a mature false armyworm caterpillar, munching on a cranberry upright\" aria-describedby=\"gallery-1-1838\" srcset=\"https:\/\/extension.umaine.edu\/cranberries\/wp-content\/uploads\/sites\/40\/2010\/02\/False-Armyworm-150x150.jpg 150w, https:\/\/extension.umaine.edu\/cranberries\/wp-content\/uploads\/sites\/40\/2010\/02\/False-Armyworm-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-1-1838'>\n\t\t\t\tFalse Armyworm Caterpillar (final instar)\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\/02\/cutworm-24thJune2002b.jpg'><img loading=\"lazy\" decoding=\"async\" width=\"150\" height=\"150\" src=\"https:\/\/extension.umaine.edu\/cranberries\/wp-content\/uploads\/sites\/40\/2010\/02\/cutworm-24thJune2002b-150x150.jpg\" class=\"attachment-thumbnail size-thumbnail\" alt=\"A fully-developed False Armyworm caterpillar on a cranberry stem and beside a U.S. dime for scale purposes\" aria-describedby=\"gallery-1-1835\" srcset=\"https:\/\/extension.umaine.edu\/cranberries\/wp-content\/uploads\/sites\/40\/2010\/02\/cutworm-24thJune2002b-150x150.jpg 150w, https:\/\/extension.umaine.edu\/cranberries\/wp-content\/uploads\/sites\/40\/2010\/02\/cutworm-24thJune2002b-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-1-1835'>\n\t\t\t\tFalse Armyworm Caterpillar (final instar)\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\/02\/cutworm-24thJune2002a.jpg'><img loading=\"lazy\" decoding=\"async\" width=\"150\" height=\"150\" src=\"https:\/\/extension.umaine.edu\/cranberries\/wp-content\/uploads\/sites\/40\/2010\/02\/cutworm-24thJune2002a-150x150.jpg\" class=\"attachment-thumbnail size-thumbnail\" alt=\"A full-sized\/mature False Armyworm caterpillar feeding on the tip of a cranberry stem.\" aria-describedby=\"gallery-1-1834\" srcset=\"https:\/\/extension.umaine.edu\/cranberries\/wp-content\/uploads\/sites\/40\/2010\/02\/cutworm-24thJune2002a-150x150.jpg 150w, https:\/\/extension.umaine.edu\/cranberries\/wp-content\/uploads\/sites\/40\/2010\/02\/cutworm-24thJune2002a-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-1-1834'>\n\t\t\t\tFalse Armyworm Caterpillar (final instar)\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\/02\/false-armyworm.jpg'><img loading=\"lazy\" decoding=\"async\" width=\"150\" height=\"150\" src=\"https:\/\/extension.umaine.edu\/cranberries\/wp-content\/uploads\/sites\/40\/2010\/02\/false-armyworm-150x150.jpg\" class=\"attachment-thumbnail size-thumbnail\" alt=\"Photo showing a mid-sized false armyworm larva next to a US penny for scale purposes\" aria-describedby=\"gallery-1-1851\" srcset=\"https:\/\/extension.umaine.edu\/cranberries\/wp-content\/uploads\/sites\/40\/2010\/02\/false-armyworm-150x150.jpg 150w, https:\/\/extension.umaine.edu\/cranberries\/wp-content\/uploads\/sites\/40\/2010\/02\/false-armyworm-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-1-1851'>\n\t\t\t\tFalse Armyworm Caterpillar (note the four pairs of hind legs and the striping on the body)\n\t\t\t\t<\/dd><\/dl><br style=\"clear: both\" \/>\n\t\t<\/div>\n\n<hr \/>\n<p><strong>Description:<\/strong>\u00a0The false armyworm is a member of the cutworm group and its appetite is voracious! The young caterpillars will feed on new terminal buds, often before any\u00a0new growth has started, although they will eat the new growth as well. They can be hard to identify when they are very young. Until they get bigger,\u00a0they highly resemble spanworms because they will &#8216;loop&#8217; somewhat while crawling the way that loopers (or spanworms) do. Unlike spanworms, however, false armyworms have three pairs of hind legs versus just 1 pair, and older larvae will have four pairs (you can see the legs clearly in the right-most photo above). Older, larger larvae&#8211;which can grow to two inches in length&#8211;will also have an obvious stripe running the\u00a0length of each side of the body (the yellow portion of the striping is what tends to stand out the most, visually). Finally, false armyworms are usually some shade of green in color, especially lime green, but there is considerable variation\u00a0in coloring (various shades of green, to dark brown, to black). False armyworm is univoltine, meaning it goes through just a single generation per year. It overwinters as a moth, and the females will lay about 600 eggs total, in masses of sometimes 100 or more, in late April and very early May. They are deposited on the cranberry stems or on the undersides of the leaves, and hatching of the eggs for much of Maine takes place, on average, starting generally (most years) in late May.<strong><span style=\"font-weight: normal\"><span style=\"font-weight: normal\"><br \/>\n<\/span><\/span><\/strong><\/p>\n<hr \/>\n<p><strong>Sweepnet-Captured &#8216;First Dates&#8217;: <\/strong>6\/6\/97, 5\/28\/98, 5\/28\/99*, 5\/24\/00, 5\/31\/01, 5\/13\/02*, 5\/24\/05, 5\/25\/07, 5\/14\/08, 5\/14\/09, 5\/16\/2013*\u2666, 5\/20\/2014*\u2666 <em><strong>(Average of these = May 23rd)<\/strong><\/em><\/p>\n<p><em>Dates are when active insects were found for the\u00a0first time during each indicated year on any\u00a0commercial Maine cranberry bed.<\/em><\/p>\n<p>* = 1st day scouting that year<br \/>\n\u2666 = central Maine; larvae were newly-hatched<\/p>\n<hr \/>\n<p><strong>Control: <\/strong>For specific and current control recommendations for Maine, please refer to the\u00a0<a href=\"https:\/\/extension.umaine.edu\/cranberries\/grower-services\/cranberry-ipm-guide\/\">Maine Cranberry Pest Management Guide<\/a>. Don&#8217;t forget that a\u00a0<strong>Late-Water (LW) flood<\/strong> controls false armyworm very well: <a href=\"https:\/\/extension.umaine.edu\/cranberries\/wp-content\/uploads\/sites\/40\/2010\/05\/LateWater.pdf\">Late-water Flood Management (pdf)<\/a> | <a href=\"https:\/\/extension.umaine.edu\/cranberries\/wp-content\/uploads\/sites\/40\/2010\/05\/LateWater.doc\">Late-water Flood Management (MS Word)<\/a><\/p>\n<hr \/>\n","protected":false},"excerpt":{"rendered":"<p>Order: Lepidoptera || Family: Noctuidae Scientific Name: Xylena nupera (Lintner) Description:\u00a0The false armyworm is a member of the cutworm group and its appetite is voracious! The young caterpillars will feed on new terminal buds, often before any\u00a0new growth has started, although they will eat the new growth as well. They can be hard to identify [&hellip;]<\/p>\n","protected":false},"author":60,"featured_media":0,"parent":461,"menu_order":4,"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-1830","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>False Armyworm - 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\/false-armyworm\/\" \/>\n<meta property=\"og:locale\" content=\"en_US\" \/>\n<meta property=\"og:type\" content=\"article\" \/>\n<meta property=\"og:title\" content=\"False Armyworm - Cooperative Extension: Cranberries - University of Maine Cooperative Extension\" \/>\n<meta property=\"og:description\" content=\"Order: Lepidoptera || Family: Noctuidae Scientific Name: Xylena nupera (Lintner) Description:\u00a0The false armyworm is a member of the cutworm group and its appetite is voracious! The young caterpillars will feed on new terminal buds, often before any\u00a0new growth has started, although they will eat the new growth as well. They can be hard to identify [&hellip;]\" \/>\n<meta property=\"og:url\" content=\"https:\/\/extension.umaine.edu\/cranberries\/grower-services\/insects\/false-armyworm\/\" \/>\n<meta property=\"og:site_name\" content=\"Cooperative Extension: Cranberries\" \/>\n<meta property=\"article:modified_time\" content=\"2019-06-11T18:48:44+00:00\" \/>\n<meta property=\"og:image\" content=\"https:\/\/extension.umaine.edu\/cranberries\/wp-content\/uploads\/sites\/40\/2010\/02\/FalseArmyworm2001-150x150.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=\"2 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\/false-armyworm\/\",\"url\":\"https:\/\/extension.umaine.edu\/cranberries\/grower-services\/insects\/false-armyworm\/\",\"name\":\"False Armyworm - Cooperative Extension: Cranberries - University of Maine Cooperative Extension\",\"isPartOf\":{\"@id\":\"https:\/\/extension.umaine.edu\/cranberries\/#website\"},\"datePublished\":\"2010-02-25T17:41:04+00:00\",\"dateModified\":\"2019-06-11T18:48:44+00:00\",\"breadcrumb\":{\"@id\":\"https:\/\/extension.umaine.edu\/cranberries\/grower-services\/insects\/false-armyworm\/#breadcrumb\"},\"inLanguage\":\"en-US\",\"potentialAction\":[{\"@type\":\"ReadAction\",\"target\":[\"https:\/\/extension.umaine.edu\/cranberries\/grower-services\/insects\/false-armyworm\/\"]}]},{\"@type\":\"BreadcrumbList\",\"@id\":\"https:\/\/extension.umaine.edu\/cranberries\/grower-services\/insects\/false-armyworm\/#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\":\"False Armyworm\"}]},{\"@type\":\"WebSite\",\"@id\":\"https:\/\/extension.umaine.edu\/cranberries\/#website\",\"url\":\"https:\/\/extension.umaine.edu\/cranberries\/\",\"name\":\"Cooperative Extension: Cranberries\",\"description\":\"Information you can use. Research you can trust.\",\"potentialAction\":[{\"@type\":\"SearchAction\",\"target\":{\"@type\":\"EntryPoint\",\"urlTemplate\":\"https:\/\/extension.umaine.edu\/cranberries\/?s={search_term_string}\"},\"query-input\":{\"@type\":\"PropertyValueSpecification\",\"valueRequired\":true,\"valueName\":\"search_term_string\"}}],\"inLanguage\":\"en-US\"}]}<\/script>\n<!-- \/ Yoast SEO plugin. -->","yoast_head_json":{"title":"False Armyworm - Cooperative Extension: Cranberries - University of Maine Cooperative Extension","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:\/\/extension.umaine.edu\/cranberries\/grower-services\/insects\/false-armyworm\/","og_locale":"en_US","og_type":"article","og_title":"False Armyworm - Cooperative Extension: Cranberries - University of Maine Cooperative Extension","og_description":"Order: Lepidoptera || Family: Noctuidae Scientific Name: Xylena nupera (Lintner) Description:\u00a0The false armyworm is a member of the cutworm group and its appetite is voracious! The young caterpillars will feed on new terminal buds, often before any\u00a0new growth has started, although they will eat the new growth as well. They can be hard to identify [&hellip;]","og_url":"https:\/\/extension.umaine.edu\/cranberries\/grower-services\/insects\/false-armyworm\/","og_site_name":"Cooperative Extension: Cranberries","article_modified_time":"2019-06-11T18:48:44+00:00","og_image":[{"url":"https:\/\/extension.umaine.edu\/cranberries\/wp-content\/uploads\/sites\/40\/2010\/02\/FalseArmyworm2001-150x150.jpg","type":"","width":"","height":""}],"twitter_card":"summary_large_image","twitter_misc":{"Est. reading time":"2 minutes"},"schema":{"@context":"https:\/\/schema.org","@graph":[{"@type":"WebPage","@id":"https:\/\/extension.umaine.edu\/cranberries\/grower-services\/insects\/false-armyworm\/","url":"https:\/\/extension.umaine.edu\/cranberries\/grower-services\/insects\/false-armyworm\/","name":"False Armyworm - Cooperative Extension: Cranberries - University of Maine Cooperative Extension","isPartOf":{"@id":"https:\/\/extension.umaine.edu\/cranberries\/#website"},"datePublished":"2010-02-25T17:41:04+00:00","dateModified":"2019-06-11T18:48:44+00:00","breadcrumb":{"@id":"https:\/\/extension.umaine.edu\/cranberries\/grower-services\/insects\/false-armyworm\/#breadcrumb"},"inLanguage":"en-US","potentialAction":[{"@type":"ReadAction","target":["https:\/\/extension.umaine.edu\/cranberries\/grower-services\/insects\/false-armyworm\/"]}]},{"@type":"BreadcrumbList","@id":"https:\/\/extension.umaine.edu\/cranberries\/grower-services\/insects\/false-armyworm\/#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":"False Armyworm"}]},{"@type":"WebSite","@id":"https:\/\/extension.umaine.edu\/cranberries\/#website","url":"https:\/\/extension.umaine.edu\/cranberries\/","name":"Cooperative Extension: Cranberries","description":"Information you can use. Research you can trust.","potentialAction":[{"@type":"SearchAction","target":{"@type":"EntryPoint","urlTemplate":"https:\/\/extension.umaine.edu\/cranberries\/?s={search_term_string}"},"query-input":{"@type":"PropertyValueSpecification","valueRequired":true,"valueName":"search_term_string"}}],"inLanguage":"en-US"}]}},"taxonomy_info":[],"featured_image_src_large":false,"author_info":{"display_name":"charlesa","author_link":"https:\/\/extension.umaine.edu\/cranberries\/author\/carmstrong-2\/"},"comment_info":0,"_links":{"self":[{"href":"https:\/\/extension.umaine.edu\/cranberries\/wp-json\/wp\/v2\/pages\/1830","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/extension.umaine.edu\/cranberries\/wp-json\/wp\/v2\/pages"}],"about":[{"href":"https:\/\/extension.umaine.edu\/cranberries\/wp-json\/wp\/v2\/types\/page"}],"author":[{"embeddable":true,"href":"https:\/\/extension.umaine.edu\/cranberries\/wp-json\/wp\/v2\/users\/60"}],"replies":[{"embeddable":true,"href":"https:\/\/extension.umaine.edu\/cranberries\/wp-json\/wp\/v2\/comments?post=1830"}],"version-history":[{"count":7,"href":"https:\/\/extension.umaine.edu\/cranberries\/wp-json\/wp\/v2\/pages\/1830\/revisions"}],"predecessor-version":[{"id":6325,"href":"https:\/\/extension.umaine.edu\/cranberries\/wp-json\/wp\/v2\/pages\/1830\/revisions\/6325"}],"up":[{"embeddable":true,"href":"https:\/\/extension.umaine.edu\/cranberries\/wp-json\/wp\/v2\/pages\/461"}],"wp:attachment":[{"href":"https:\/\/extension.umaine.edu\/cranberries\/wp-json\/wp\/v2\/media?parent=1830"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}