{"id":995,"date":"2025-05-27T19:16:50","date_gmt":"2025-05-27T19:16:50","guid":{"rendered":"https:\/\/sites.rutgers.edu\/nursery-ipm\/?p=995"},"modified":"2025-08-27T19:38:39","modified_gmt":"2025-08-27T19:38:39","slug":"japanese-maple-scale","status":"publish","type":"post","link":"https:\/\/sites.rutgers.edu\/nursery-ipm\/japanese-maple-scale\/","title":{"rendered":"Japanese Maple Scale"},"content":{"rendered":"<h2><strong>Japanese Maple Scale (<em>Lopholeucaspis japonica<\/em>)<\/strong><\/h2>\n<h4><strong>GDD Window (base 50): 800-1200 (1st gen), 2500+ (2nd gen)<\/strong><\/h4>\n<h5><\/h5>\n<h4><strong>Overview:<\/strong>\u200b\u200b\u200b<\/h4>\n<ul>\n<li data-ccp-props=\"{&quot;335551550&quot;:1,&quot;335551620&quot;:1,&quot;335559683&quot;:0,&quot;335559685&quot;:0,&quot;335559731&quot;:0,&quot;335559737&quot;:0,&quot;335562764&quot;:2,&quot;335562765&quot;:1,&quot;335562766&quot;:4,&quot;335562767&quot;:0,&quot;335562768&quot;:4,&quot;335562769&quot;:0}\"><b><span data-usefontface=\"false\" data-contrast=\"none\">Host\u00a0plants<\/span><\/b><b><span data-usefontface=\"false\" data-contrast=\"none\">: Large host range, including maples, firethorn, <\/span><\/b><b><span data-usefontface=\"false\" data-contrast=\"none\">serviceberry, lilac, cotoneaster, Prunus<\/span><\/b>\u200b<\/li>\n<li data-ccp-props=\"{&quot;335551550&quot;:1,&quot;335551620&quot;:1,&quot;335559683&quot;:0,&quot;335559685&quot;:0,&quot;335559731&quot;:0,&quot;335559737&quot;:0,&quot;335562764&quot;:2,&quot;335562765&quot;:1,&quot;335562766&quot;:4,&quot;335562767&quot;:0,&quot;335562768&quot;:4,&quot;335562769&quot;:0}\"><span data-usefontface=\"false\" data-contrast=\"none\">1st generation crawlers emerge in June; extends for 4+ weeks<\/span>\u200b<\/li>\n<li data-ccp-props=\"{&quot;335551550&quot;:1,&quot;335551620&quot;:1,&quot;335559683&quot;:0,&quot;335559685&quot;:0,&quot;335559731&quot;:0,&quot;335559737&quot;:0,&quot;335562764&quot;:2,&quot;335562765&quot;:1,&quot;335562766&quot;:4,&quot;335562767&quot;:0,&quot;335562768&quot;:4,&quot;335562769&quot;:0}\"><span data-usefontface=\"false\" data-contrast=\"none\">2nd generation in August (1st &amp; 2nd g<\/span><span data-usefontface=\"false\" data-contrast=\"none\">enerations can overlap)<\/span><\/li>\n<li data-ccp-props=\"{&quot;335551550&quot;:1,&quot;335551620&quot;:1,&quot;335559683&quot;:0,&quot;335559685&quot;:0,&quot;335559731&quot;:0,&quot;335559737&quot;:0,&quot;335562764&quot;:2,&quot;335562765&quot;:1,&quot;335562766&quot;:4,&quot;335562767&quot;:0,&quot;335562768&quot;:4,&quot;335562769&quot;:0}\">Under\u00a0the\u00a0white\u00a0cover,\u00a0the\u00a0female\u00a0scales have a deep purple color = Diagnostic\u200b<\/li>\n<li data-ccp-props=\"{&quot;335551550&quot;:1,&quot;335551620&quot;:1,&quot;335559683&quot;:0,&quot;335559685&quot;:0,&quot;335559731&quot;:0,&quot;335559737&quot;:0,&quot;335562764&quot;:2,&quot;335562765&quot;:1,&quot;335562766&quot;:4,&quot;335562767&quot;:0,&quot;335562768&quot;:4,&quot;335562769&quot;:0}\">Both males &amp; females have elliptical white, waxy covers \u200b<\/li>\n<li data-ccp-props=\"{&quot;335551550&quot;:1,&quot;335551620&quot;:1,&quot;335559683&quot;:0,&quot;335559685&quot;:0,&quot;335559731&quot;:0,&quot;335559737&quot;:0,&quot;335562764&quot;:2,&quot;335562765&quot;:1,&quot;335562766&quot;:4,&quot;335562767&quot;:0,&quot;335562768&quot;:4,&quot;335562769&quot;:0}\">Feed only on branches\u200b<\/li>\n<li data-ccp-props=\"{&quot;335551550&quot;:1,&quot;335551620&quot;:1,&quot;335559683&quot;:0,&quot;335559685&quot;:0,&quot;335559731&quot;:0,&quot;335559737&quot;:0,&quot;335562764&quot;:2,&quot;335562765&quot;:1,&quot;335562766&quot;:4,&quot;335562767&quot;:0,&quot;335562768&quot;:4,&quot;335562769&quot;:0}\"><span data-usefontface=\"false\" data-contrast=\"none\">Females are larger than males<\/span>\u200b<\/li>\n<li data-ccp-props=\"{&quot;335551550&quot;:1,&quot;335551620&quot;:1,&quot;335559683&quot;:0,&quot;335559685&quot;:0,&quot;335559731&quot;:0,&quot;335559737&quot;:0,&quot;335562764&quot;:2,&quot;335562765&quot;:1,&quot;335562766&quot;:4,&quot;335562767&quot;:0,&quot;335562768&quot;:4,&quot;335562769&quot;:0}\"><span data-usefontface=\"false\" data-contrast=\"none\">Trees in hot environments are more likely to become infested<\/span>\u200b<\/li>\n<li data-ccp-props=\"{&quot;335551550&quot;:1,&quot;335551620&quot;:1,&quot;335559683&quot;:0,&quot;335559685&quot;:0,&quot;335559731&quot;:0,&quot;335559737&quot;:0,&quot;335562764&quot;:2,&quot;335562765&quot;:1,&quot;335562766&quot;:4,&quot;335562767&quot;:0,&quot;335562768&quot;:4,&quot;335562769&quot;:0}\"><span data-usefontface=\"false\" data-contrast=\"none\">Individual branch dieback &amp; tree <\/span><span data-usefontface=\"false\" data-contrast=\"none\">tree<\/span><span data-usefontface=\"false\" data-contrast=\"none\">\u00a0death may occur<\/span>\u200b<\/li>\n<li data-ccp-props=\"{&quot;335551550&quot;:1,&quot;335551620&quot;:1,&quot;335559683&quot;:0,&quot;335559685&quot;:0,&quot;335559731&quot;:0,&quot;335559737&quot;:0,&quot;335562764&quot;:2,&quot;335562765&quot;:1,&quot;335562766&quot;:4,&quot;335562767&quot;:0,&quot;335562768&quot;:4,&quot;335562769&quot;:0}\"><span data-usefontface=\"false\" data-contrast=\"none\">Whole stem surfaces or trunks may become covered in multiple <\/span><span data-usefontface=\"false\" data-contrast=\"none\">layers of scales<\/span>\u200b<\/li>\n<\/ul>\n<h4><strong>Management:<\/strong><\/h4>\n<h5><strong>Cultural Practices:<\/strong><\/h5>\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=\"2\" data-aria-level=\"2\"><b><span data-usefontface=\"false\" data-contrast=\"none\">Natural predators<\/span><\/b><b><span data-usefontface=\"false\" data-contrast=\"none\">:<\/span><\/b><span data-usefontface=\"false\" data-contrast=\"none\">\u00a0 brown lacewings, <\/span><span data-usefontface=\"false\" data-contrast=\"none\">green\u00a0lacewings,\u00a0<\/span><span data-usefontface=\"false\" data-contrast=\"none\">lady\u00a0beetles<\/span><span data-usefontface=\"false\" data-contrast=\"none\">, <\/span><span data-usefontface=\"false\" data-contrast=\"none\">&amp;\u00a0\u00a0<\/span>Parasitoid wasps\u00a0\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\">Prevent dusty conditions\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\">Reduce plant stress<\/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\">Dispose of heavily infested plants\u00a0<\/span><\/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\">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=\"3\" data-aria-level=\"2\"><span data-usefontface=\"false\" data-contrast=\"none\">Pyrethroids [3A]: &#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=\"4\" 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), malathion<\/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=\"5\" data-aria-level=\"1\"><b><span data-usefontface=\"false\" data-contrast=\"none\">Considerations<\/span><\/b><b><span data-usefontface=\"false\" data-contrast=\"none\">:<\/span><\/b>\u200b\n<ul>\n<li data-charcodes=\"111\" data-font=\"Courier New,monospace\" data-buautonum=\"8\" data-margin=\"1260\" data-aria-posinset=\"6\" data-aria-level=\"2\"><b><span data-usefontface=\"false\" data-contrast=\"none\">Will harm non-target species<\/span><\/b>\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\">Timing is essential in controlling armored <\/span><span data-usefontface=\"false\" data-contrast=\"none\">scales (target crawler stage before waxy <\/span><span data-usefontface=\"false\" data-contrast=\"none\">covering forms)<\/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=\"8\" 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=\"9\" data-aria-level=\"2\"><b><span data-usefontface=\"false\" data-contrast=\"none\">Neonicotinoids<\/span><\/b><span data-usefontface=\"false\" data-contrast=\"none\">\u00a0<\/span><span data-usefontface=\"false\" data-contrast=\"none\">[4A]:\u00a0<\/span><span data-usefontface=\"false\" data-contrast=\"none\">dinotefuran<\/span><span data-usefontface=\"false\" data-contrast=\"none\">, a<\/span><span data-usefontface=\"false\" data-contrast=\"none\">cetamiprid, thiamethoxam<\/span>\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\">Tetronic<\/span><span data-usefontface=\"false\" data-contrast=\"none\">\u00a0acids [23}:\u00a0<\/span><span data-usefontface=\"false\" data-contrast=\"none\">spirotetramat<\/span><span data-usefontface=\"false\" data-contrast=\"none\">\u00a0<\/span><\/li>\n<\/ul>\n<\/li>\n<\/ul>\n<h5><strong>Biorationals:<\/strong><\/h5>\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=\"1\" data-aria-level=\"2\">Insecticidal soaps and Horticultural oils\u200b\n<ul style=\"font-weight: 400\">\n<li data-charcodes=\"167\" data-font=\"Wingdings,Sans-Serif\" data-buautonum=\"8\" data-margin=\"1980\" data-aria-posinset=\"2\" data-aria-level=\"3\">Neem oil\u200b<\/li>\n<\/ul>\n<\/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\">Insect growth regulators:\u200b\n<ul style=\"font-weight: 400\">\n<li data-charcodes=\"167\" data-font=\"Wingdings,Sans-Serif\" data-buautonum=\"8\" data-margin=\"1980\" data-aria-posinset=\"4\" data-aria-level=\"3\">Pyriproxyfen\u00a0[7A]\u200b<\/li>\n<li data-charcodes=\"167\" data-font=\"Wingdings,Sans-Serif\" data-buautonum=\"8\" data-margin=\"1980\" data-aria-posinset=\"5\" data-aria-level=\"3\">Buprofezin\u00a0[16]<\/li>\n<\/ul>\n<\/li>\n<\/ul>\n<div class=\"mceTemp\"><\/div>\n<div class=\"mceTemp\"><\/div>\n<figure id=\"attachment_996\" aria-describedby=\"caption-attachment-996\" style=\"width: 300px\" class=\"wp-caption alignnone\"><img loading=\"lazy\" decoding=\"async\" class=\"size-medium wp-image-996\" src=\"https:\/\/sites.rutgers.edu\/nursery-ipm\/wp-content\/uploads\/sites\/1396\/2025\/07\/3a-bb9-Japanese-Maple-Scale-2-300x201.jpg\" alt=\"\" width=\"300\" height=\"201\" srcset=\"https:\/\/sites.rutgers.edu\/nursery-ipm\/wp-content\/uploads\/sites\/1396\/2025\/07\/3a-bb9-Japanese-Maple-Scale-2-300x201.jpg 300w, https:\/\/sites.rutgers.edu\/nursery-ipm\/wp-content\/uploads\/sites\/1396\/2025\/07\/3a-bb9-Japanese-Maple-Scale-2-768x516.jpg 768w, https:\/\/sites.rutgers.edu\/nursery-ipm\/wp-content\/uploads\/sites\/1396\/2025\/07\/3a-bb9-Japanese-Maple-Scale-2.jpg 800w\" sizes=\"(max-width: 300px) 100vw, 300px\" \/><figcaption id=\"caption-attachment-996\" class=\"wp-caption-text\">Large population of Japanese Maple Scales observed on main stem of infested tree. This scale will only feed on bark. (Photo Credit: Steven K. Rettke, Rutgers Coop. Ext.)<\/figcaption><\/figure>\n<figure id=\"attachment_997\" aria-describedby=\"caption-attachment-997\" style=\"width: 300px\" class=\"wp-caption alignnone\"><img loading=\"lazy\" decoding=\"async\" class=\"size-medium wp-image-997\" src=\"https:\/\/sites.rutgers.edu\/nursery-ipm\/wp-content\/uploads\/sites\/1396\/2025\/07\/3a-bb10-Japanese-Maple-Scale-4-300x225.jpg\" alt=\"\" width=\"300\" height=\"225\" srcset=\"https:\/\/sites.rutgers.edu\/nursery-ipm\/wp-content\/uploads\/sites\/1396\/2025\/07\/3a-bb10-Japanese-Maple-Scale-4-300x225.jpg 300w, https:\/\/sites.rutgers.edu\/nursery-ipm\/wp-content\/uploads\/sites\/1396\/2025\/07\/3a-bb10-Japanese-Maple-Scale-4.jpg 765w\" sizes=\"(max-width: 300px) 100vw, 300px\" \/><figcaption id=\"caption-attachment-997\" class=\"wp-caption-text\">With extreme infestations of Japanese Maple Scales the death of branches can occur. (Photo Credit: Steven K. Rettke, Rutgers Coop. Ext.)<\/figcaption><\/figure>\n<figure id=\"attachment_999\" aria-describedby=\"caption-attachment-999\" style=\"width: 300px\" class=\"wp-caption alignnone\"><img loading=\"lazy\" decoding=\"async\" class=\"size-medium wp-image-999\" src=\"https:\/\/sites.rutgers.edu\/nursery-ipm\/wp-content\/uploads\/sites\/1396\/2025\/07\/3a-bb12-Japanese-Maple-Scale-6-300x225.jpg\" alt=\"\" width=\"300\" height=\"225\" srcset=\"https:\/\/sites.rutgers.edu\/nursery-ipm\/wp-content\/uploads\/sites\/1396\/2025\/07\/3a-bb12-Japanese-Maple-Scale-6-300x225.jpg 300w, https:\/\/sites.rutgers.edu\/nursery-ipm\/wp-content\/uploads\/sites\/1396\/2025\/07\/3a-bb12-Japanese-Maple-Scale-6.jpg 750w\" sizes=\"(max-width: 300px) 100vw, 300px\" \/><figcaption id=\"caption-attachment-999\" class=\"wp-caption-text\">White waxy cover is scraped-off &amp; turned over to expose the jelly-like \u201cblob\u201d of the Japanese Maple Scale. (Photo Credit: Steven K. Rettke, Rutgers Coop. Ext.)<\/figcaption><\/figure>\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>Japanese Maple Scale (Lopholeucaspis japonica) GDD Window (base 50): 800-1200 (1st gen), 2500+ (2nd gen) Overview:\u200b\u200b\u200b Host\u00a0plants: Large host range, including maples, firethorn, serviceberry, lilac, cotoneaster, Prunus\u200b 1st generation crawlers &hellip; <a href=\"https:\/\/sites.rutgers.edu\/nursery-ipm\/japanese-maple-scale\/\" class=\"\">Read More<\/a><\/p>\n","protected":false},"author":3407,"featured_media":998,"comment_status":"closed","ping_status":"closed","sticky":false,"template":"","format":"standard","meta":{"_acf_changed":false,"footnotes":""},"categories":[15],"tags":[],"class_list":["post-995","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>Japanese Maple Scale - 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\/japanese-maple-scale\/\" \/>\n<meta property=\"og:locale\" content=\"en_US\" \/>\n<meta property=\"og:type\" content=\"article\" \/>\n<meta property=\"og:title\" content=\"Japanese Maple Scale - Nursery IPM\" \/>\n<meta property=\"og:description\" content=\"Japanese Maple Scale (Lopholeucaspis japonica) GDD Window (base 50): 800-1200 (1st gen), 2500+ (2nd gen) Overview:\u200b\u200b\u200b Host\u00a0plants: Large host range, including maples, firethorn, serviceberry, lilac, cotoneaster, Prunus\u200b 1st generation crawlers &hellip; Read More\" \/>\n<meta property=\"og:url\" content=\"https:\/\/sites.rutgers.edu\/nursery-ipm\/japanese-maple-scale\/\" \/>\n<meta property=\"og:site_name\" content=\"Nursery IPM\" \/>\n<meta property=\"article:published_time\" content=\"2025-05-27T19:16:50+00:00\" \/>\n<meta property=\"article:modified_time\" content=\"2025-08-27T19:38:39+00:00\" \/>\n<meta property=\"og:image\" content=\"https:\/\/sites.rutgers.edu\/nursery-ipm\/wp-content\/uploads\/sites\/1396\/2025\/07\/3a-bb11-Japanese-Maple-Scale-5.jpg\" \/>\n\t<meta property=\"og:image:width\" content=\"752\" \/>\n\t<meta property=\"og:image:height\" content=\"564\" \/>\n\t<meta property=\"og:image:type\" content=\"image\/jpeg\" \/>\n<meta name=\"author\" content=\"Erin O. 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