{"id":12209,"date":"2021-04-01T15:46:29","date_gmt":"2021-04-01T20:46:29","guid":{"rendered":"https:\/\/uwm.edu\/field-station\/?p=12209"},"modified":"2021-04-01T15:46:29","modified_gmt":"2021-04-01T20:46:29","slug":"brown-marmorated-stink-bug-plus-ten","status":"publish","type":"post","link":"https:\/\/uwm.edu\/field-station\/bug-of-the-week\/brown-marmorated-stink-bug-plus-ten\/","title":{"rendered":"Brown Marmorated Stink Bug Plus Ten"},"content":{"rendered":"<p><small>(Note: All links below are to external websites and leave the UWM website.)<\/small><\/p>\n<p class=\"x_MsoNormal\">Salutations,\u00a0BugFans,<\/p>\n<p class=\"x_MsoNormal\">The BugLady mentioned Brown Marmorated\/Asian Stink Bugs briefly in a survey of stink bugs ten years ago, and she has been wondering what progress they had made since then. Veteran BugFans have probably noted that she uses the word \u201cpest\u201d sparingly (and never for native species), but the BMSB qualifies as a pest by most people\u2019s yardstick.<\/p>\n<p class=\"x_MsoNormal\">Warning \u2013 the BugLady has possibly scored a personal best for clickable links in this episode.<\/p>\n<p class=\"x_MsoNormal\">Before we get started, stink bugs (family <em>Pentatomidae<\/em>) come in a variety of colors:<\/p>\n<ul>\n<li class=\"x_MsoNormal\"><a title=\"Original URL: https:\/\/bugguide.net\/node\/view\/1932534\/bgpage. Click or tap if you trust this link.\" href=\"https:\/\/nam02.safelinks.protection.outlook.com\/?url=https%3A%2F%2Fbugguide.net%2Fnode%2Fview%2F1932534%2Fbgpage&amp;data=04%7C01%7Ctotty%40uwm.edu%7Cc1ad01d46143409df2df08d8f3e3ba9e%7C0bca7ac3fcb64efd89eb6de97603cf21%7C0%7C1%7C637527506718209067%7CUnknown%7CTWFpbGZsb3d8eyJWIjoiMC4wLjAwMDAiLCJQIjoiV2luMzIiLCJBTiI6Ik1haWwiLCJXVCI6Mn0%3D%7C2000&amp;sdata=QyXoy7B8IMIstc7y9AC6F1%2BFdB%2BwNSwWmKhb0%2B%2FYG2E%3D&amp;reserved=0\" rel=\"noopener noreferrer\" target=\"_blank\">https:\/\/bugguide.net\/node\/view\/1932534\/bgpage<\/a>,<\/li>\n<li class=\"x_MsoNormal\"><a title=\"Original URL: https:\/\/bugguide.net\/node\/view\/438992\/bgpage. Click or tap if you trust this link.\" href=\"https:\/\/nam02.safelinks.protection.outlook.com\/?url=https%3A%2F%2Fbugguide.net%2Fnode%2Fview%2F438992%2Fbgpage&amp;data=04%7C01%7Ctotty%40uwm.edu%7Cc1ad01d46143409df2df08d8f3e3ba9e%7C0bca7ac3fcb64efd89eb6de97603cf21%7C0%7C1%7C637527506718219060%7CUnknown%7CTWFpbGZsb3d8eyJWIjoiMC4wLjAwMDAiLCJQIjoiV2luMzIiLCJBTiI6Ik1haWwiLCJXVCI6Mn0%3D%7C2000&amp;sdata=%2B0NKXzPhIP6SvZ6rHgwvdRrR%2FYQ4chhg16g90yDLWJg%3D&amp;reserved=0\" rel=\"noopener noreferrer\" target=\"_blank\">https:\/\/bugguide.net\/node\/view\/438992\/bgpage<\/a>,<\/li>\n<li class=\"x_MsoNormal\"><a title=\"Original URL: https:\/\/bugguide.net\/node\/view\/1325451\/bgimage. Click or tap if you trust this link.\" href=\"https:\/\/nam02.safelinks.protection.outlook.com\/?url=https%3A%2F%2Fbugguide.net%2Fnode%2Fview%2F1325451%2Fbgimage&amp;data=04%7C01%7Ctotty%40uwm.edu%7Cc1ad01d46143409df2df08d8f3e3ba9e%7C0bca7ac3fcb64efd89eb6de97603cf21%7C0%7C1%7C637527506718219060%7CUnknown%7CTWFpbGZsb3d8eyJWIjoiMC4wLjAwMDAiLCJQIjoiV2luMzIiLCJBTiI6Ik1haWwiLCJXVCI6Mn0%3D%7C2000&amp;sdata=1DONHKXf91ZAqkXlA6tzcNtpr5x7cFtRSMD4ThciRKg%3D&amp;reserved=0\" rel=\"noopener noreferrer\" target=\"_blank\">https:\/\/bugguide.net\/node\/view\/1325451\/bgimage<\/a>,<\/li>\n<\/ul>\n<p class=\"x_MsoNormal\">with nymphs that are even more <a href=\"https:\/\/bugguide.net\/node\/view\/39670\/bgpage\">decorative than their elders<\/a>; and in a variety of lifestyles.\u00a0 Some species are carnivores, but many are plant-eaters, and some rise to the level of being agricultural nuisances. Not every brown stink bug is a BMSB. Here are some species that are not: <a title=\"Original URL: https:\/\/bugguide.net\/node\/view\/613621\/bgimage. Click or tap if you trust this link.\" href=\"https:\/\/nam02.safelinks.protection.outlook.com\/?url=https%3A%2F%2Fbugguide.net%2Fnode%2Fview%2F613621%2Fbgimage&amp;data=04%7C01%7Ctotty%40uwm.edu%7Cc1ad01d46143409df2df08d8f3e3ba9e%7C0bca7ac3fcb64efd89eb6de97603cf21%7C0%7C1%7C637527506718239051%7CUnknown%7CTWFpbGZsb3d8eyJWIjoiMC4wLjAwMDAiLCJQIjoiV2luMzIiLCJBTiI6Ik1haWwiLCJXVCI6Mn0%3D%7C2000&amp;sdata=XvxZ%2FmajSaozOIBoEszoFOgA3y5b905lGVFK0COmzns%3D&amp;reserved=0\" rel=\"noopener noreferrer\" target=\"_blank\">https:\/\/bugguide.net\/node\/view\/613621\/bgimage<\/a>, and\u00a0<a title=\"Original URL: https:\/\/bugguide.net\/node\/view\/1588384\/bgimage. Click or tap if you trust this link.\" href=\"https:\/\/nam02.safelinks.protection.outlook.com\/?url=https%3A%2F%2Fbugguide.net%2Fnode%2Fview%2F1588384%2Fbgimage&amp;data=04%7C01%7Ctotty%40uwm.edu%7Cc1ad01d46143409df2df08d8f3e3ba9e%7C0bca7ac3fcb64efd89eb6de97603cf21%7C0%7C1%7C637527506718239051%7CUnknown%7CTWFpbGZsb3d8eyJWIjoiMC4wLjAwMDAiLCJQIjoiV2luMzIiLCJBTiI6Ik1haWwiLCJXVCI6Mn0%3D%7C2000&amp;sdata=whsxMwp%2FcslTFwymFM1m4%2FBtCGoeIjulupKdsrLO01I%3D&amp;reserved=0\" rel=\"noopener noreferrer\" target=\"_blank\">https:\/\/bugguide.net\/node\/view\/1588384\/bgimage<\/a>. BMSBs have <a href=\"https:\/\/bugguide.net\/node\/view\/1457677\/bgimage\">pale bands on their antennae<\/a>.<\/p>\n<p class=\"x_MsoNormal\"><a href=\"https:\/\/uwm.edu\/field-station\/wp-content\/uploads\/sites\/380\/2021\/04\/brown-marmorated-stinkbug11-2rz.jpg\"><img loading=\"lazy\" decoding=\"async\" class=\"size-medium wp-image-12213 alignright\" src=\"https:\/\/uwm.edu\/field-station\/wp-content\/uploads\/sites\/380\/2021\/04\/brown-marmorated-stinkbug11-2rz-300x300.jpg\" alt=\"Brown-Marmorated Stink Bug\" width=\"300\" height=\"300\" srcset=\"https:\/\/uwm.edu\/field-station\/wp-content\/uploads\/sites\/380\/2021\/04\/brown-marmorated-stinkbug11-2rz-300x300.jpg 300w, https:\/\/uwm.edu\/field-station\/wp-content\/uploads\/sites\/380\/2021\/04\/brown-marmorated-stinkbug11-2rz-150x150.jpg 150w, https:\/\/uwm.edu\/field-station\/wp-content\/uploads\/sites\/380\/2021\/04\/brown-marmorated-stinkbug11-2rz-768x768.jpg 768w, https:\/\/uwm.edu\/field-station\/wp-content\/uploads\/sites\/380\/2021\/04\/brown-marmorated-stinkbug11-2rz.jpg 800w\" sizes=\"auto, (max-width: 300px) 100vw, 300px\" \/><\/a>Brown Marmorated Stink Bugs (<em>Halyomorpha halys<\/em>) originally hailed from eastern Asia, but they\u2019ve traveled to pretty much everywhere else on the globe &#8211; first in commercial shipments from China, and later in containers, cars, RVs, boxes of produce, etc. from newly-afflicted areas. (<a href=\"https:\/\/bugguide.net\/node\/view\/360145\/bgimage\">They can fly, too<\/a>.)\u00a0Their debut in North America was in Allenton, PA in 1998 (at a time when, as several sources point out, stink bugs were \u201c<i>not reportable.<\/i>\u201d \u00a0The resulting lag gave them time to get a foothold in the New World (\u201c<i>creeping up on all sixes<\/i>,\u201d as Monty Python once said)).\u00a0 By 2009 they were well-established along the eastern seaboard and were moving inland, and by 2010, they had discovered the western Great Lakes.\u00a0 Here\u2019s a <a href=\"https:\/\/www.stopbmsb.org\/where-is-bmsb\/state-by-state\/\">recently updated map<\/a>.<\/p>\n<p class=\"x_MsoNormal\">Marmorated means veined or variegated, like marble.\u00a0 Adults can be dark or pale, and the <a href=\"https:\/\/bugguide.net\/node\/view\/1727088\/bgimage\">newly-molted adults are spectacular<\/a>.<\/p>\n<p class=\"x_MsoNormal\">Males court by deploying aerial pheromones and by sending vibrations out through the substrate; if she\u2019s willing, she vibrates back.\u00a0 She deposits barrel-shaped eggs (up to 400) in <a href=\"https:\/\/bugguide.net\/node\/view\/968034\/bgimage\">clusters on the undersides of leaves<\/a>. The <a href=\"https:\/\/bugguide.net\/node\/view\/1702969\/bgimage\">newly-hatched nymphs<\/a>  feed first on their egg shells, ingesting beneficial microbes that their mothers left there for them, which gives them the intestinal flora they will need to digest plant materials (it\u2019s a little trick that\u2019s known to other plant-eating stink bugs, too). There\u2019s probably a single generation in Wisconsin, but there are multiple generations each year in the South, and they overwinter as adults.<\/p>\n<p class=\"x_MsoNormal\">They feed by inserting their sharp beak into plant tissue and sucking out the juices.\u00a0 For a great view of a BMSB\u2019s business end, see this <a href=\"https:\/\/bugguide.net\/node\/view\/469403\/bgimage\">nice set of pictures<\/a>. Their palate is catholic \u2013 they\u2019ve been reported on at least 300 plant species, including orchard and field crops and ornamentals. While they\u2019re waiting for the fruit to appear, they\u2019ll happily suck liquids from stems and flowers (and later, seeds), but fruit eating is what they\u2019re notorious for. The saliva they inject while feeding causes cosmetic damage called dimpling or \u201c<i>catfacing<\/i>,\u201d which makes fruits hard to sell, and their bites may introduce rot that doesn\u2019t show until the fruit has been picked and stored for a while. <a href=\"https:\/\/extension.psu.edu\/brown-marmorated-stink-bug\">Scroll down for pictures of insect damage<\/a>. In 2010, at the start of the siege, damage to apple crops in the Mid-Atlantic States amounted to $37 million, and stone fruits were heavily impacted.<\/p>\n<p class=\"x_MsoNormal\">Reportedly, some native birds and insect parasitoids are learning that they\u2019re edible, but like all stink bugs, BMSBs protect themselves by oozing a smelly, toxic liquid from glands on the thorax (it\u2019s said to smell like strong cilantro or dirty gym socks or even rotting meat \u2013 odors that the BugLady never equated with each other &#8211; and it\u2019s hard to wash off).<\/p>\n<p class=\"x_MsoNormal\">With so much at stake (and with BMSBs developing a resistance to a number of common pesticides), researchers have been working hard to find biological controls. After far too many hard-learned lessons (read \u201c<i>epic fails<\/i>\u201d), the process of finding a predator\/parasitoid in an invasive species\u2019 homeland, importing it, and letting it loose on our landscape has necessarily become more structured (example: imported tachinid flies that were released during much of the 1900\u2019s to parasitize gypsy moth caterpillars turned out to prefer Luna moth caterpillars).<\/p>\n<p class=\"x_MsoNormal\">Scientists at Rutgers found a promising agent in the person of the samurai wasp from eastern Asia (scroll down for a shot of an adult wasp emerging from a BMSB egg, having <a href=\"https:\/\/www.sciencemag.org\/news\/2018\/08\/scientists-spent-years-plan-import-wasp-kill-stinkbugs-then-it-showed-its-own\">nipped the nymph in the bud<\/a>). In 2018, after several years of study, it appeared that the tiny (sesame-seed-sized) wasps would target only BMSBs. About the time that researchers were poised to release the wasps, some samurai wasps were discovered in the wild along the mid-Atlantic coast. They weren\u2019t escapees (their DNA didn\u2019t match the various strains being studied in laboratories); like a number of other biocontrol agents, they had, for better or worse, found their way here on their own.<\/p>\n<p class=\"x_MsoNormal\">BMSBs\u2019 other bad habit involves their winter abode \u2013 which is\u00a0<i>your<\/i> winter abode. To reverse the old saying, \u201c<i>Su casa es mi casa<\/i>\u201d (your house is my house). Like box elder bugs, BMSBs head inside when the weather turns frosty, sometimes in Biblical numbers, and they don\u2019t need a very big gap in the siding or screen door to slip inside. The literature is full of accounts of people sweeping or vacuuming up thousands\/tens of thousands of them in a single day.<\/p>\n<p class=\"x_MsoNormal\">They don\u2019t bite,<i>\u00a0<\/i>but they do stink, and they lodge in AC filters, and they hibernate in boots and coat pockets and closets. They awake as spring approaches and fly through the house, looking for an exit. A local newspaper recommends dedicating a small, hand-held vacuum to BMSB control (because a vacuumed up BMSB is a riled-up BMSB, and a riled-up BMSB is a smelly BMSB), emptying the full vacuum bag into a heavy trash bag and \u201c<i>taking it far from the house.<\/i>\u201d (and then???)<\/p>\n<p class=\"x_MsoNormal\">A decade ago, only a handful had been seen in Wisconsin.<\/p>\n<p class=\"x_MsoNormal\">BMSBs were first recorded in south-central Wisconsin around Madison area in 2010, and while their initial strongholds were in the Madison and Fox Valley areas, they spread to 28 counties during the <a href=\"https:\/\/russell-insectlab.webhosting.cals.wisc.edu\/wp-content\/uploads\/sites\/253\/2018\/11\/BMSB-Map-January-2019.jpg\">next nine years<\/a>. Wisconsin winters are not a problem for them.<\/p>\n<p class=\"x_MsoNormal\">At this point, there are not enough of them to do significant damage to fruit crops here, but they are poised in the wings, and Wisconsin grows an awful lot of apples, grapes, raspberries, and cherries (and corn and green beans and soybeans), all of which are on the BMSB\u2019s menu. As always, good info and pictures at this site, including a <a href=\"http:\/\/entnemdept.ufl.edu\/creatures\/veg\/bean\/brown_marmorated_stink_bug.htm\">shot of a dimpled peach<\/a>.<\/p>\n<p class=\"x_MsoNormal\"><i>The BugLady<\/i><\/p>\n","protected":false},"excerpt":{"rendered":"<p>(Note: All links below are to external websites and leave the UWM website.) Salutations,\u00a0BugFans, The BugLady mentioned Brown Marmorated\/Asian Stink Bugs briefly in a survey of stink bugs ten years ago, and she has been wondering what progress they had &hellip;<\/p>\n","protected":false},"author":19040,"featured_media":12212,"comment_status":"closed","ping_status":"closed","sticky":false,"template":"","format":"standard","meta":{"_acf_changed":false,"footnotes":"","uwm_wg_additional_authors":[]},"categories":[8],"tags":[],"class_list":["post-12209","post","type-post","status-publish","format-standard","has-post-thumbnail","hentry","category-bug-of-the-week"],"yoast_head":"<!-- This site is optimized with the Yoast SEO Premium plugin v27.3 (Yoast SEO v27.3) - https:\/\/yoast.com\/product\/yoast-seo-premium-wordpress\/ -->\n<title>Field Station<\/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:\/\/uwm.edu\/field-station\/bug-of-the-week\/brown-marmorated-stink-bug-plus-ten\/\" \/>\n<meta property=\"og:locale\" content=\"en_US\" \/>\n<meta property=\"og:type\" content=\"article\" \/>\n<meta property=\"og:title\" content=\"Brown Marmorated Stink Bug Plus Ten\" \/>\n<meta property=\"og:description\" content=\"(Note: All links below are to external websites and leave the UWM website.) 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