{"id":759,"date":"2025-04-22T15:08:46","date_gmt":"2025-04-22T15:08:46","guid":{"rendered":"https:\/\/sites.rutgers.edu\/nursery-ipm\/?p=759"},"modified":"2025-08-27T19:44:25","modified_gmt":"2025-08-27T19:44:25","slug":"eastern-tent-caterpillar","status":"publish","type":"post","link":"https:\/\/sites.rutgers.edu\/nursery-ipm\/eastern-tent-caterpillar\/","title":{"rendered":"Eastern Tent Caterpillar"},"content":{"rendered":"<h2><strong>Eastern Tent Caterpillar (<em>Malacosoma americanum<\/em>)<\/strong><\/h2>\n<h4><strong>GDD Window (base 50): 90-190<\/strong><\/h4>\n<h5><\/h5>\n<h4><strong>Overview:<\/strong><\/h4>\n<ul>\n<li>Overwinter as eggs, black masses that wrap around small twigs of host plants and hatch in the early spring, using web tents in the forks and crotches of branches as protection and feeding on leaves\u200b<\/li>\n<li>Young caterpillars are dark with two thin yellow stripes on backs\u200b<\/li>\n<li>Mature caterpillars are two inches long with a white stripe and two yellow stripes on their backs, the rest of their body being blue, yellow, and black\u200b<\/li>\n<li>Cocoons are white to yellowish and are spun in dry, protected places\u200b<\/li>\n<li>Adult moths are fluffy, tan to light brown, with two white stripes on the wings\u200b<\/li>\n<li>Can cause complete defoliation, consuming all fresh buds and leaves\u200b<\/li>\n<li><strong>Host plants:<\/strong>\u00a0 Rosaceous trees \u2013 cherry, crabapple, apple\u200b\n<ul>\n<li>Occasionally other deciduous shrubs and trees<\/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:\u00a0<\/span><\/b><span data-usefontface=\"false\" data-contrast=\"none\">many birds, <\/span><span data-usefontface=\"false\" data-contrast=\"none\">insects, and parasitoids\u00a0\u00a0<\/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\">Prune out egg masses in the <\/span><span data-usefontface=\"false\" data-contrast=\"none\">winter before they hatch<\/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\">Remove silk tents using a <\/span><span data-usefontface=\"false\" data-contrast=\"none\">disposable object<\/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\">Do not use fire \u2013 fire will cause <\/span><span data-usefontface=\"false\" data-contrast=\"none\">more damage to the tree than <\/span><span data-usefontface=\"false\" data-contrast=\"none\">the insect itself\u00a0<\/span><\/li>\n<\/ul>\n<h5><strong>Materials:<\/strong><\/h5>\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\">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-scheme-color=\"@000000,,\" data-usefontface=\"false\" data-contrast=\"none\">Pyrethroids [3]: &#8211;<\/span><span data-scheme-color=\"@000000,,\" data-usefontface=\"false\" data-contrast=\"none\">thrins<\/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\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}\"><span class=\"LineBox SCXP139565335 BCX0\"><span class=\"TextRun SCXP139565335 BCX0\" lang=\"EN-US\" xml:lang=\"EN-US\" data-usefontface=\"false\" data-contrast=\"none\"><span class=\"NormalTextRun SCXP139565335 BCX0\">Organophosphates [1B]: <\/span><\/span><\/span><span class=\"LineBox SCXP139565335 BCX0\"><span class=\"TextRun SpellingErrorZoomed SCXP139565335 BCX0\" lang=\"EN-US\" xml:lang=\"EN-US\" data-usefontface=\"false\" data-contrast=\"none\"><span class=\"SCXP139565335 BCX0\">acephate<\/span><\/span><\/span><\/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=\"10\" data-aria-level=\"2\"><span class=\"LineBox SCXP35590923 BCX0\" style=\"font-weight: 400\"><span class=\"EOP SCXP35590923 BCX0\">Will harm non-target species<\/span><\/span><\/li>\n<\/ul>\n<\/li>\n<\/ul>\n<h5><strong>Biorationals:<\/strong><\/h5>\n<ul>\n<li data-charcodes=\"111\" data-font=\"Courier New,monospace\" data-buautonum=\"8\" data-margin=\"1260\" data-aria-posinset=\"2\" data-aria-level=\"2\"><span data-usefontface=\"false\" data-contrast=\"none\">Horticultural oil<\/span>\u200b<\/li>\n<li data-charcodes=\"111\" data-font=\"Courier New,monospace\" data-buautonum=\"8\" data-margin=\"1260\" data-aria-posinset=\"3\" data-aria-level=\"2\"><span data-usefontface=\"false\" data-contrast=\"none\">Insecticidal soap<\/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\">Spinosyns [5]:\u00a0<\/span><span data-usefontface=\"false\" data-contrast=\"none\">spinosad<\/span>\u200b<\/li>\n<li data-charcodes=\"111\" data-font=\"Courier New,monospace\" data-buautonum=\"8\" data-margin=\"1260\" data-aria-posinset=\"5\" data-aria-level=\"2\"><span data-usefontface=\"false\" data-contrast=\"none\">Microbial disruptors of insect <\/span><span data-usefontface=\"false\" data-contrast=\"none\">midgut [11]:\u00a0<\/span><i><span data-usefontface=\"false\" data-contrast=\"none\">Bacillus <\/span><\/i><i><span data-usefontface=\"false\" data-contrast=\"none\">thuringiensis (<\/span><\/i><i><span data-usefontface=\"false\" data-contrast=\"none\">Bt<\/span><\/i><i><span data-usefontface=\"false\" data-contrast=\"none\">)<\/span><\/i><\/li>\n<\/ul>\n<div class=\"mceTemp\"><\/div>\n<figure id=\"attachment_760\" aria-describedby=\"caption-attachment-760\" style=\"width: 300px\" class=\"wp-caption alignnone\"><img loading=\"lazy\" decoding=\"async\" class=\"size-medium wp-image-760\" src=\"https:\/\/sites.rutgers.edu\/nursery-ipm\/wp-content\/uploads\/sites\/1396\/2025\/06\/yyy-Eastern-Tent-Caterpillar-Egg-Mass-768x512-1-300x200.jpg\" alt=\"\" width=\"300\" height=\"200\" srcset=\"https:\/\/sites.rutgers.edu\/nursery-ipm\/wp-content\/uploads\/sites\/1396\/2025\/06\/yyy-Eastern-Tent-Caterpillar-Egg-Mass-768x512-1-300x200.jpg 300w, https:\/\/sites.rutgers.edu\/nursery-ipm\/wp-content\/uploads\/sites\/1396\/2025\/06\/yyy-Eastern-Tent-Caterpillar-Egg-Mass-768x512-1.jpg 768w\" sizes=\"(max-width: 300px) 100vw, 300px\" \/><figcaption id=\"caption-attachment-760\" class=\"wp-caption-text\">Photo Credit: Steven K. Rettke, Rutgers Coop. Ext.<\/figcaption><\/figure>\n<figure id=\"attachment_761\" aria-describedby=\"caption-attachment-761\" style=\"width: 300px\" class=\"wp-caption alignnone\"><img loading=\"lazy\" decoding=\"async\" class=\"size-medium wp-image-761\" src=\"https:\/\/sites.rutgers.edu\/nursery-ipm\/wp-content\/uploads\/sites\/1396\/2025\/06\/aa-11-Tent-Cats-3-Hatch-300x225.jpg\" alt=\"\" width=\"300\" height=\"225\" srcset=\"https:\/\/sites.rutgers.edu\/nursery-ipm\/wp-content\/uploads\/sites\/1396\/2025\/06\/aa-11-Tent-Cats-3-Hatch-300x225.jpg 300w, https:\/\/sites.rutgers.edu\/nursery-ipm\/wp-content\/uploads\/sites\/1396\/2025\/06\/aa-11-Tent-Cats-3-Hatch-768x575.jpg 768w, https:\/\/sites.rutgers.edu\/nursery-ipm\/wp-content\/uploads\/sites\/1396\/2025\/06\/aa-11-Tent-Cats-3-Hatch.jpg 800w\" sizes=\"(max-width: 300px) 100vw, 300px\" \/><figcaption id=\"caption-attachment-761\" class=\"wp-caption-text\">Photo Credit: Steven K. Rettke, Rutgers Coop. Ext.<\/figcaption><\/figure>\n<figure id=\"attachment_762\" aria-describedby=\"caption-attachment-762\" style=\"width: 300px\" class=\"wp-caption alignnone\"><img loading=\"lazy\" decoding=\"async\" class=\"size-medium wp-image-762\" src=\"https:\/\/sites.rutgers.edu\/nursery-ipm\/wp-content\/uploads\/sites\/1396\/2025\/06\/o1-Tent-Cats-Eggs-1-300x225.jpg\" alt=\"\" width=\"300\" height=\"225\" srcset=\"https:\/\/sites.rutgers.edu\/nursery-ipm\/wp-content\/uploads\/sites\/1396\/2025\/06\/o1-Tent-Cats-Eggs-1-300x225.jpg 300w, https:\/\/sites.rutgers.edu\/nursery-ipm\/wp-content\/uploads\/sites\/1396\/2025\/06\/o1-Tent-Cats-Eggs-1.jpg 741w\" sizes=\"(max-width: 300px) 100vw, 300px\" \/><figcaption id=\"caption-attachment-762\" class=\"wp-caption-text\">Photo Credit: Steven K. Rettke, Rutgers Coop. Ext.<\/figcaption><\/figure>\n<figure id=\"attachment_763\" aria-describedby=\"caption-attachment-763\" style=\"width: 300px\" class=\"wp-caption alignnone\"><img loading=\"lazy\" decoding=\"async\" class=\"size-medium wp-image-763\" src=\"https:\/\/sites.rutgers.edu\/nursery-ipm\/wp-content\/uploads\/sites\/1396\/2025\/06\/o5-6-Tent-Cat-Early-Webbing-300x225.jpg\" alt=\"\" width=\"300\" height=\"225\" srcset=\"https:\/\/sites.rutgers.edu\/nursery-ipm\/wp-content\/uploads\/sites\/1396\/2025\/06\/o5-6-Tent-Cat-Early-Webbing-300x225.jpg 300w, https:\/\/sites.rutgers.edu\/nursery-ipm\/wp-content\/uploads\/sites\/1396\/2025\/06\/o5-6-Tent-Cat-Early-Webbing.jpg 737w\" sizes=\"(max-width: 300px) 100vw, 300px\" \/><figcaption id=\"caption-attachment-763\" class=\"wp-caption-text\">Photo Credit: Steven K. Rettke, Rutgers Coop. Ext.<\/figcaption><\/figure>\n<figure id=\"attachment_765\" aria-describedby=\"caption-attachment-765\" style=\"width: 300px\" class=\"wp-caption alignnone\"><img loading=\"lazy\" decoding=\"async\" class=\"size-medium wp-image-765\" src=\"https:\/\/sites.rutgers.edu\/nursery-ipm\/wp-content\/uploads\/sites\/1396\/2025\/06\/o7-7-Tent-Cat-Mid-Instars-300x225.jpg\" alt=\"\" width=\"300\" height=\"225\" srcset=\"https:\/\/sites.rutgers.edu\/nursery-ipm\/wp-content\/uploads\/sites\/1396\/2025\/06\/o7-7-Tent-Cat-Mid-Instars-300x225.jpg 300w, https:\/\/sites.rutgers.edu\/nursery-ipm\/wp-content\/uploads\/sites\/1396\/2025\/06\/o7-7-Tent-Cat-Mid-Instars.jpg 760w\" sizes=\"(max-width: 300px) 100vw, 300px\" \/><figcaption id=\"caption-attachment-765\" class=\"wp-caption-text\">Photo Credit: Steven K. Rettke, Rutgers Coop. Ext.<\/figcaption><\/figure>\n<figure id=\"attachment_767\" aria-describedby=\"caption-attachment-767\" style=\"width: 300px\" class=\"wp-caption alignnone\"><img loading=\"lazy\" decoding=\"async\" class=\"size-medium wp-image-767\" src=\"https:\/\/sites.rutgers.edu\/nursery-ipm\/wp-content\/uploads\/sites\/1396\/2025\/06\/o6-9-Tent-Cats-have-leaves-to-eat-2-300x225.jpg\" alt=\"\" width=\"300\" height=\"225\" srcset=\"https:\/\/sites.rutgers.edu\/nursery-ipm\/wp-content\/uploads\/sites\/1396\/2025\/06\/o6-9-Tent-Cats-have-leaves-to-eat-2-300x225.jpg 300w, https:\/\/sites.rutgers.edu\/nursery-ipm\/wp-content\/uploads\/sites\/1396\/2025\/06\/o6-9-Tent-Cats-have-leaves-to-eat-2.jpg 754w\" sizes=\"(max-width: 300px) 100vw, 300px\" \/><figcaption id=\"caption-attachment-767\" class=\"wp-caption-text\">Photo Credit: Steven K. Rettke, Rutgers Coop. Ext.<\/figcaption><\/figure>\n<figure id=\"attachment_769\" aria-describedby=\"caption-attachment-769\" style=\"width: 300px\" class=\"wp-caption alignnone\"><img loading=\"lazy\" decoding=\"async\" class=\"size-medium wp-image-769\" src=\"https:\/\/sites.rutgers.edu\/nursery-ipm\/wp-content\/uploads\/sites\/1396\/2025\/06\/o8-8-Tent-Cat-Later-Instars-300x225.jpg\" alt=\"\" width=\"300\" height=\"225\" srcset=\"https:\/\/sites.rutgers.edu\/nursery-ipm\/wp-content\/uploads\/sites\/1396\/2025\/06\/o8-8-Tent-Cat-Later-Instars-300x225.jpg 300w, https:\/\/sites.rutgers.edu\/nursery-ipm\/wp-content\/uploads\/sites\/1396\/2025\/06\/o8-8-Tent-Cat-Later-Instars.jpg 752w\" sizes=\"(max-width: 300px) 100vw, 300px\" \/><figcaption id=\"caption-attachment-769\" class=\"wp-caption-text\">Photo Credit: Steven K. Rettke, Rutgers Coop. Ext.<\/figcaption><\/figure>\n<figure id=\"attachment_770\" aria-describedby=\"caption-attachment-770\" style=\"width: 300px\" class=\"wp-caption alignnone\"><img loading=\"lazy\" decoding=\"async\" class=\"size-medium wp-image-770\" src=\"https:\/\/sites.rutgers.edu\/nursery-ipm\/wp-content\/uploads\/sites\/1396\/2025\/06\/o9-13-Tent-Cats-early-May-instars-300x225.jpg\" alt=\"\" width=\"300\" height=\"225\" srcset=\"https:\/\/sites.rutgers.edu\/nursery-ipm\/wp-content\/uploads\/sites\/1396\/2025\/06\/o9-13-Tent-Cats-early-May-instars-300x225.jpg 300w, https:\/\/sites.rutgers.edu\/nursery-ipm\/wp-content\/uploads\/sites\/1396\/2025\/06\/o9-13-Tent-Cats-early-May-instars.jpg 757w\" sizes=\"(max-width: 300px) 100vw, 300px\" \/><figcaption id=\"caption-attachment-770\" class=\"wp-caption-text\">Photo Credit: Steven K. Rettke, Rutgers Coop. Ext.<\/figcaption><\/figure>\n<figure id=\"attachment_771\" aria-describedby=\"caption-attachment-771\" style=\"width: 300px\" class=\"wp-caption alignnone\"><img loading=\"lazy\" decoding=\"async\" class=\"size-medium wp-image-771\" src=\"https:\/\/sites.rutgers.edu\/nursery-ipm\/wp-content\/uploads\/sites\/1396\/2025\/06\/o10-15-Tent-Cats-mid-May-instar-mass-300x225.jpg\" alt=\"\" width=\"300\" height=\"225\" srcset=\"https:\/\/sites.rutgers.edu\/nursery-ipm\/wp-content\/uploads\/sites\/1396\/2025\/06\/o10-15-Tent-Cats-mid-May-instar-mass-300x225.jpg 300w, https:\/\/sites.rutgers.edu\/nursery-ipm\/wp-content\/uploads\/sites\/1396\/2025\/06\/o10-15-Tent-Cats-mid-May-instar-mass.jpg 745w\" sizes=\"(max-width: 300px) 100vw, 300px\" \/><figcaption id=\"caption-attachment-771\" class=\"wp-caption-text\">Photo Credit: Steven K. Rettke, Rutgers Coop. Ext.<\/figcaption><\/figure>\n<figure id=\"attachment_772\" aria-describedby=\"caption-attachment-772\" style=\"width: 300px\" class=\"wp-caption alignnone\"><img loading=\"lazy\" decoding=\"async\" class=\"size-medium wp-image-772\" src=\"https:\/\/sites.rutgers.edu\/nursery-ipm\/wp-content\/uploads\/sites\/1396\/2025\/06\/o10-15-Tent-Cats-mid-May-instar-mass-1-300x225.jpg\" alt=\"\" width=\"300\" height=\"225\" srcset=\"https:\/\/sites.rutgers.edu\/nursery-ipm\/wp-content\/uploads\/sites\/1396\/2025\/06\/o10-15-Tent-Cats-mid-May-instar-mass-1-300x225.jpg 300w, https:\/\/sites.rutgers.edu\/nursery-ipm\/wp-content\/uploads\/sites\/1396\/2025\/06\/o10-15-Tent-Cats-mid-May-instar-mass-1.jpg 745w\" sizes=\"(max-width: 300px) 100vw, 300px\" \/><figcaption id=\"caption-attachment-772\" class=\"wp-caption-text\">Photo Credit: Steven K. Rettke, Rutgers Coop. Ext.<\/figcaption><\/figure>\n<figure id=\"attachment_774\" aria-describedby=\"caption-attachment-774\" style=\"width: 300px\" class=\"wp-caption alignnone\"><img loading=\"lazy\" decoding=\"async\" class=\"size-medium wp-image-774\" src=\"https:\/\/sites.rutgers.edu\/nursery-ipm\/wp-content\/uploads\/sites\/1396\/2025\/06\/o13-21-Tent-Cats-predacious-wasp-2-300x225.jpg\" alt=\"\" width=\"300\" height=\"225\" srcset=\"https:\/\/sites.rutgers.edu\/nursery-ipm\/wp-content\/uploads\/sites\/1396\/2025\/06\/o13-21-Tent-Cats-predacious-wasp-2-300x225.jpg 300w, https:\/\/sites.rutgers.edu\/nursery-ipm\/wp-content\/uploads\/sites\/1396\/2025\/06\/o13-21-Tent-Cats-predacious-wasp-2.jpg 738w\" sizes=\"(max-width: 300px) 100vw, 300px\" \/><figcaption id=\"caption-attachment-774\" class=\"wp-caption-text\">Photo Credit: Steven K. Rettke, Rutgers Coop. Ext.<\/figcaption><\/figure>\n<figure id=\"attachment_775\" aria-describedby=\"caption-attachment-775\" style=\"width: 300px\" class=\"wp-caption alignnone\"><img loading=\"lazy\" decoding=\"async\" class=\"size-medium wp-image-775\" src=\"https:\/\/sites.rutgers.edu\/nursery-ipm\/wp-content\/uploads\/sites\/1396\/2025\/06\/o-12-Tent-Cats-Yellowjacket-predator-300x221.jpg\" alt=\"\" width=\"300\" height=\"221\" srcset=\"https:\/\/sites.rutgers.edu\/nursery-ipm\/wp-content\/uploads\/sites\/1396\/2025\/06\/o-12-Tent-Cats-Yellowjacket-predator-300x221.jpg 300w, https:\/\/sites.rutgers.edu\/nursery-ipm\/wp-content\/uploads\/sites\/1396\/2025\/06\/o-12-Tent-Cats-Yellowjacket-predator.jpg 723w\" sizes=\"(max-width: 300px) 100vw, 300px\" \/><figcaption id=\"caption-attachment-775\" class=\"wp-caption-text\">Photo Credit: Steven K. Rettke, Rutgers Coop. Ext.<\/figcaption><\/figure>\n<figure id=\"attachment_776\" aria-describedby=\"caption-attachment-776\" style=\"width: 300px\" class=\"wp-caption alignnone\"><img loading=\"lazy\" decoding=\"async\" class=\"size-medium wp-image-776\" src=\"https:\/\/sites.rutgers.edu\/nursery-ipm\/wp-content\/uploads\/sites\/1396\/2025\/06\/o15-20-Tent-Cats-late-May-frass-last-to-leave-home-300x225.jpg\" alt=\"\" width=\"300\" height=\"225\" srcset=\"https:\/\/sites.rutgers.edu\/nursery-ipm\/wp-content\/uploads\/sites\/1396\/2025\/06\/o15-20-Tent-Cats-late-May-frass-last-to-leave-home-300x225.jpg 300w, https:\/\/sites.rutgers.edu\/nursery-ipm\/wp-content\/uploads\/sites\/1396\/2025\/06\/o15-20-Tent-Cats-late-May-frass-last-to-leave-home.jpg 736w\" sizes=\"(max-width: 300px) 100vw, 300px\" \/><figcaption id=\"caption-attachment-776\" class=\"wp-caption-text\">Photo Credit: Steven K. Rettke, Rutgers Coop. Ext.<\/figcaption><\/figure>\n<figure id=\"attachment_777\" aria-describedby=\"caption-attachment-777\" style=\"width: 300px\" class=\"wp-caption alignnone\"><img loading=\"lazy\" decoding=\"async\" class=\"size-medium wp-image-777\" src=\"https:\/\/sites.rutgers.edu\/nursery-ipm\/wp-content\/uploads\/sites\/1396\/2025\/06\/o16-18-Tent-Cats-late-May-pupation-migration-300x225.jpg\" alt=\"\" width=\"300\" height=\"225\" srcset=\"https:\/\/sites.rutgers.edu\/nursery-ipm\/wp-content\/uploads\/sites\/1396\/2025\/06\/o16-18-Tent-Cats-late-May-pupation-migration-300x225.jpg 300w, https:\/\/sites.rutgers.edu\/nursery-ipm\/wp-content\/uploads\/sites\/1396\/2025\/06\/o16-18-Tent-Cats-late-May-pupation-migration.jpg 748w\" sizes=\"(max-width: 300px) 100vw, 300px\" \/><figcaption id=\"caption-attachment-777\" class=\"wp-caption-text\">Photo Credit: Steven K. Rettke, Rutgers Coop. Ext.<\/figcaption><\/figure>\n<figure id=\"attachment_778\" aria-describedby=\"caption-attachment-778\" style=\"width: 300px\" class=\"wp-caption alignnone\"><img loading=\"lazy\" decoding=\"async\" class=\"size-medium wp-image-778\" src=\"https:\/\/sites.rutgers.edu\/nursery-ipm\/wp-content\/uploads\/sites\/1396\/2025\/06\/o17-19-Tent-Cats-late-May-pupal-case-weaving-300x225.jpg\" alt=\"\" width=\"300\" height=\"225\" srcset=\"https:\/\/sites.rutgers.edu\/nursery-ipm\/wp-content\/uploads\/sites\/1396\/2025\/06\/o17-19-Tent-Cats-late-May-pupal-case-weaving-300x225.jpg 300w, https:\/\/sites.rutgers.edu\/nursery-ipm\/wp-content\/uploads\/sites\/1396\/2025\/06\/o17-19-Tent-Cats-late-May-pupal-case-weaving.jpg 758w\" sizes=\"(max-width: 300px) 100vw, 300px\" \/><figcaption id=\"caption-attachment-778\" class=\"wp-caption-text\">Photo Credit: Steven K. Rettke, Rutgers Coop. Ext.<\/figcaption><\/figure>\n<figure id=\"attachment_779\" aria-describedby=\"caption-attachment-779\" style=\"width: 300px\" class=\"wp-caption alignnone\"><img loading=\"lazy\" decoding=\"async\" class=\"size-medium wp-image-779\" src=\"https:\/\/sites.rutgers.edu\/nursery-ipm\/wp-content\/uploads\/sites\/1396\/2025\/06\/o18-22-Tent-Cats-pupal-case-complete-300x225.jpg\" alt=\"\" width=\"300\" height=\"225\" srcset=\"https:\/\/sites.rutgers.edu\/nursery-ipm\/wp-content\/uploads\/sites\/1396\/2025\/06\/o18-22-Tent-Cats-pupal-case-complete-300x225.jpg 300w, https:\/\/sites.rutgers.edu\/nursery-ipm\/wp-content\/uploads\/sites\/1396\/2025\/06\/o18-22-Tent-Cats-pupal-case-complete.jpg 761w\" sizes=\"(max-width: 300px) 100vw, 300px\" \/><figcaption id=\"caption-attachment-779\" class=\"wp-caption-text\">Photo Credit: Steven K. Rettke, Rutgers Coop. Ext.<\/figcaption><\/figure>\n<figure id=\"attachment_780\" aria-describedby=\"caption-attachment-780\" style=\"width: 274px\" class=\"wp-caption alignnone\"><img loading=\"lazy\" decoding=\"async\" class=\"size-medium wp-image-780\" src=\"https:\/\/sites.rutgers.edu\/nursery-ipm\/wp-content\/uploads\/sites\/1396\/2025\/06\/o20-Eastern-tent-caterpillar-moth-274x300.jpg\" alt=\"\" width=\"274\" height=\"300\" srcset=\"https:\/\/sites.rutgers.edu\/nursery-ipm\/wp-content\/uploads\/sites\/1396\/2025\/06\/o20-Eastern-tent-caterpillar-moth-274x300.jpg 274w, https:\/\/sites.rutgers.edu\/nursery-ipm\/wp-content\/uploads\/sites\/1396\/2025\/06\/o20-Eastern-tent-caterpillar-moth.jpg 550w\" sizes=\"(max-width: 274px) 100vw, 274px\" \/><figcaption id=\"caption-attachment-780\" class=\"wp-caption-text\">Photo Credit: Steven K. Rettke, Rutgers Coop. Ext.<\/figcaption><\/figure>\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>Eastern Tent Caterpillar (Malacosoma americanum) GDD Window (base 50): 90-190 Overview: Overwinter as eggs, black masses that wrap around small twigs of host plants and hatch in the early spring, &hellip; <a href=\"https:\/\/sites.rutgers.edu\/nursery-ipm\/eastern-tent-caterpillar\/\" class=\"\">Read More<\/a><\/p>\n","protected":false},"author":3407,"featured_media":773,"comment_status":"closed","ping_status":"closed","sticky":false,"template":"","format":"standard","meta":{"_acf_changed":false,"footnotes":""},"categories":[15],"tags":[],"class_list":["post-759","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>Eastern Tent Caterpillar - 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\/eastern-tent-caterpillar\/\" \/>\n<meta property=\"og:locale\" content=\"en_US\" \/>\n<meta property=\"og:type\" content=\"article\" \/>\n<meta property=\"og:title\" content=\"Eastern Tent Caterpillar - Nursery IPM\" \/>\n<meta property=\"og:description\" content=\"Eastern Tent Caterpillar (Malacosoma americanum) GDD Window (base 50): 90-190 Overview: Overwinter as eggs, black masses that wrap around small twigs of host plants and hatch in the early spring, &hellip; Read More\" \/>\n<meta property=\"og:url\" content=\"https:\/\/sites.rutgers.edu\/nursery-ipm\/eastern-tent-caterpillar\/\" \/>\n<meta property=\"og:site_name\" content=\"Nursery IPM\" \/>\n<meta property=\"article:published_time\" content=\"2025-04-22T15:08:46+00:00\" \/>\n<meta property=\"article:modified_time\" content=\"2025-08-27T19:44:25+00:00\" \/>\n<meta property=\"og:image\" content=\"https:\/\/sites.rutgers.edu\/nursery-ipm\/wp-content\/uploads\/sites\/1396\/2025\/06\/o11-16-Tent-Cats-mid-May-predator-evidence.jpg\" \/>\n\t<meta property=\"og:image:width\" content=\"729\" \/>\n\t<meta property=\"og:image:height\" content=\"546\" \/>\n\t<meta property=\"og:image:type\" content=\"image\/jpeg\" \/>\n<meta name=\"author\" content=\"Erin O. 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