{"id":11559,"date":"2020-05-27T10:13:20","date_gmt":"2020-05-27T15:13:20","guid":{"rendered":"https:\/\/uwm.edu\/field-station\/?p=11559"},"modified":"2024-08-26T16:06:20","modified_gmt":"2024-08-26T21:06:20","slug":"wildflower-watch-marsh-marigold","status":"publish","type":"post","link":"https:\/\/uwm.edu\/field-station\/bug-of-the-week\/wildflower-watch-marsh-marigold\/","title":{"rendered":"Wildflower Watch \u2013Marsh Marigold"},"content":{"rendered":"\n<p>Howdy, BugFans,<\/p>\n\n\n\n<p>May is American wetlands month, so we\u2019ll end it in the swamp, in the company of Marsh Marigolds, the flowers that turn newly thawed wetlands a riotous yellow from the last days of April through much of May. Skunk cabbage and pussy willows may whisper the arrival of spring, but marsh marigolds crank up the volume.<\/p>\n\n\n\n<p>The BugLady should have started this project two weeks ago when the marsh marigold was at its peak, but the truth is that despite the masses of flowers it produces, she seldom sees many insects on it, and the ones she sees are as likely to be resting as dining. According to the great <a href=\"https:\/\/www.illinoiswildflowers.info\/\">Illinois Wildflowers website<\/a>, \u201cThe nectar and pollen of the flowers attract flies and bees primarily. This includes <em>Bombylius major<\/em> (Giant Bee Fly), <em>Syrphid<\/em> [hover, flower] flies, <em>Halictid<\/em> [sweat] bees, honey bees, and others. Two leaf beetles are occasionally found on the foliage of Marsh Marigold: <em>Plateumaris nitida<\/em> and <em>Hydrothassa [Prasocuris] vittata<\/em>. It is possible that they eat the foliage. For other herbivores, specific information for Marsh Marigold is lacking. Because the acrid foliage contains toxic alkaloids and glycosides, it is usually avoided by mammalian herbivores.\u201d<\/p>\n\n\n\n<p>Here are some marsh marigold basics, adapted from an article the BugLady wrote for the newsletter of the Friends of the Cedarburg Bog in 2012:<\/p>\n\n\n\n<ul class=\"wp-block-list\">\n<li>Your Grandma probably called them \u201cCowslips,\u201d which comes from an Old English word \u201ccuslyppe \u201cor \u201ccu slyppe\u201d for cow slobber or cow dung.<\/li>\n\n\n\n<li>Thoreau called them \u201cA flower-fire bursting up, as if through crevices in the meadow where they grow.\u201d He also said that \u201cthe flower has no scent but speaks wholly to the eye.\u201d He was wrong about the scent, but the flower\u2019s faint odor is more easily detected by insects than by humans.<\/li>\n\n\n\n<li>Early 20th century naturalist John Burroughs wrote that \u201cthey give a golden lining to many a dark, marshy place in the leafless April woods.\u201d<\/li>\n\n\n\n<li>They\u2019re not marigolds, and marsh buttercup would be the most accurate name for these members of the Buttercup family <em>Ranunculaceae<\/em> (Ranunculus is Latin for \u201clittle frog\u201d). The scientific name, <em>Caltha palustris<\/em>, means \u201cCup of the swamp.\u201d<\/li>\n\n\n\n<li>Marsh marigold is found in damp-to wet ground around the world, growing in sunny places with saturated soil. Forty years ago, it was hard to find a marsh marigold in bloom before the first week of May; now it often flowers in the last ten days of April.<\/li>\n\n\n\n<li>The flower has no petals but is made up of five to ten shiny, yellow sepals (sepals are the usually-green, modified leaves that clasp the flower bud, protecting it before it blooms). The sepal\u2019s yellow color is in a waxy coating that can easily be scraped off with your thumbnail &#8211; in a few of the pictures, you can see white spots where the color has been eaten away.<\/li>\n\n\n\n<li>Marsh marigold is an abundant source of pollen and nectar that attracts more than three dozen species of early sweat bees, flower flies, and bee flies. A bee\u2019s-eye-view is vastly different than ours is, and its perception of UV light makes the yellow sepals look purple and turns the center, where the nectar is found, black.<\/li>\n\n\n\n<li>Marsh marigold has awesome, starfish-like seed pods (#3 in the slide show https:\/\/www.minnesotawildflowers.info\/flower\/marsh-marigold).<\/li>\n<\/ul>\n\n\n\n<p>What did the BugLady find on the flowers and leaves?<\/p>\n\n\n\n<p><strong>MINING BEES AND SWEAT BEES<\/strong> hard at work ensuring next year\u2019s show.<\/p>\n\n\n\n<figure class=\"aligncenter uwm-c-img--center\"><img loading=\"lazy\" decoding=\"async\" width=\"700\" height=\"500\" src=\"https:\/\/uwm.edu\/field-station\/wp-content\/uploads\/sites\/380\/2020\/05\/sweat-bee10-8.jpg\" alt=\"Sweat Bee\" class=\"wp-image-11560\" srcset=\"https:\/\/uwm.edu\/field-station\/wp-content\/uploads\/sites\/380\/2020\/05\/sweat-bee10-8.jpg 700w, https:\/\/uwm.edu\/field-station\/wp-content\/uploads\/sites\/380\/2020\/05\/sweat-bee10-8-300x214.jpg 300w\" sizes=\"auto, (max-width: 700px) 100vw, 700px\" \/><\/figure>\n\n\n\n<p>A <strong>TEPHRITID FLY<\/strong> &#8211; <em>Tephritidae<\/em> is the (true) fruit fly family, as opposed to the pomace fly family <em>Drosophilidae<\/em>, home of those universal lab rats, the <em>Drosophila. Tephritid<\/em> larvae develop within various plant parts.<\/p>\n\n\n\n<figure class=\"aligncenter uwm-c-img--center\"><img loading=\"lazy\" decoding=\"async\" width=\"500\" height=\"500\" src=\"https:\/\/uwm.edu\/field-station\/wp-content\/uploads\/sites\/380\/2020\/05\/tephritid-fly14-2.jpg\" alt=\"Tephritid Fly\" class=\"wp-image-11561\" srcset=\"https:\/\/uwm.edu\/field-station\/wp-content\/uploads\/sites\/380\/2020\/05\/tephritid-fly14-2.jpg 500w, https:\/\/uwm.edu\/field-station\/wp-content\/uploads\/sites\/380\/2020\/05\/tephritid-fly14-2-300x300.jpg 300w, https:\/\/uwm.edu\/field-station\/wp-content\/uploads\/sites\/380\/2020\/05\/tephritid-fly14-2-150x150.jpg 150w\" sizes=\"auto, (max-width: 500px) 100vw, 500px\" \/><\/figure>\n\n\n\n<p>A <strong>CRAB SPIDER<\/strong> having a Sistine Chapel (or an ET) moment.<\/p>\n\n\n\n<figure class=\"aligncenter uwm-c-img--center\"><img loading=\"lazy\" decoding=\"async\" width=\"700\" height=\"500\" src=\"https:\/\/uwm.edu\/field-station\/wp-content\/uploads\/sites\/380\/2020\/05\/crab-spider20-6rz.jpg\" alt=\"Crab Spider\" class=\"wp-image-11562\" srcset=\"https:\/\/uwm.edu\/field-station\/wp-content\/uploads\/sites\/380\/2020\/05\/crab-spider20-6rz.jpg 700w, https:\/\/uwm.edu\/field-station\/wp-content\/uploads\/sites\/380\/2020\/05\/crab-spider20-6rz-300x214.jpg 300w\" sizes=\"auto, (max-width: 700px) 100vw, 700px\" \/><\/figure>\n\n\n\n<p><strong>MOTH FLIES<\/strong> &#8211; The BugLady has been seeing these tiny (1.5 to 4 mm), aptly-named flies (family <em>Psychodidae<\/em>) on the vegetation in wetlands recently. Some moth flies live wholesome existences, and others live in sewers and feed on the by-products thereof. These feed on nectar and on stuff they find in stagnant water; their offspring eat algae, fungi and bacteria suspended in the still waters of the swamp. For the story of another group of moth flies, <a href=\"https:\/\/uwm.edu\/field-station\/bug-of-the-week\/moth-fly\/\">see this past Bug of the Week<\/a>.<\/p>\n\n\n\n<figure class=\"aligncenter uwm-c-img--center\"><img loading=\"lazy\" decoding=\"async\" width=\"500\" height=\"500\" src=\"https:\/\/uwm.edu\/field-station\/wp-content\/uploads\/sites\/380\/2020\/05\/moth-fly20-1.jpg\" alt=\"Moth Fly\" class=\"wp-image-11563\" srcset=\"https:\/\/uwm.edu\/field-station\/wp-content\/uploads\/sites\/380\/2020\/05\/moth-fly20-1.jpg 500w, https:\/\/uwm.edu\/field-station\/wp-content\/uploads\/sites\/380\/2020\/05\/moth-fly20-1-300x300.jpg 300w, https:\/\/uwm.edu\/field-station\/wp-content\/uploads\/sites\/380\/2020\/05\/moth-fly20-1-150x150.jpg 150w\" sizes=\"auto, (max-width: 500px) 100vw, 500px\" \/><\/figure>\n\n\n\n<p><strong>(PINK) SPOTTED LADY BEETLE<\/strong> \u2013 Ladybugs eat aphids and other tiny critters, both as larvae and as adults &#8211; you can find both stages feeding in aphid herds side by side. Pink lady beetles prefer dampish habitats, and, according to <a href=\"https:\/\/bugguide.net\">bugguide.net<\/a>, \u201cUnlike most lady beetles, plant pollen may constitute up to 50% of the diet. This is the only North American lady beetle that can complete its life cycle on plant pollen.\u201d<\/p>\n\n\n\n<figure class=\"aligncenter uwm-c-img--center\"><img loading=\"lazy\" decoding=\"async\" width=\"500\" height=\"500\" src=\"https:\/\/uwm.edu\/field-station\/wp-content\/uploads\/sites\/380\/2020\/05\/ladybug-spotted20-1brz.jpg\" alt=\"Spotted Ladybug\" class=\"wp-image-11564\" srcset=\"https:\/\/uwm.edu\/field-station\/wp-content\/uploads\/sites\/380\/2020\/05\/ladybug-spotted20-1brz.jpg 500w, https:\/\/uwm.edu\/field-station\/wp-content\/uploads\/sites\/380\/2020\/05\/ladybug-spotted20-1brz-300x300.jpg 300w, https:\/\/uwm.edu\/field-station\/wp-content\/uploads\/sites\/380\/2020\/05\/ladybug-spotted20-1brz-150x150.jpg 150w\" sizes=\"auto, (max-width: 500px) 100vw, 500px\" \/><\/figure>\n\n\n\n<p>A <strong>MALE CRAB SPIDER<\/strong> lurking. Spoiler alert &#8211; the fly flew.<\/p>\n\n\n\n<figure class=\"aligncenter uwm-c-img--center\"><img loading=\"lazy\" decoding=\"async\" width=\"700\" height=\"500\" src=\"https:\/\/uwm.edu\/field-station\/wp-content\/uploads\/sites\/380\/2020\/05\/crab-spider-fly20-3.jpg\" alt=\"Male Crab Spider with fly\" class=\"wp-image-11565\" srcset=\"https:\/\/uwm.edu\/field-station\/wp-content\/uploads\/sites\/380\/2020\/05\/crab-spider-fly20-3.jpg 700w, https:\/\/uwm.edu\/field-station\/wp-content\/uploads\/sites\/380\/2020\/05\/crab-spider-fly20-3-300x214.jpg 300w\" sizes=\"auto, (max-width: 700px) 100vw, 700px\" \/><\/figure>\n\n\n\n<p><strong>ANTS<\/strong> are unsung (and ineffective) pollinators. Yes, they are all over the flowers, but since they are on foot, it\u2019s hard for them to move pollen from one flower to another (unless it\u2019s a cluster of flowers). Plus, they groom their slick little bodies constantly.<\/p>\n\n\n\n<figure class=\"aligncenter uwm-c-img--center\"><img loading=\"lazy\" decoding=\"async\" width=\"700\" height=\"500\" src=\"https:\/\/uwm.edu\/field-station\/wp-content\/uploads\/sites\/380\/2020\/05\/ant20-1rz.jpg\" alt=\"Ant on flower\" class=\"wp-image-11566\" srcset=\"https:\/\/uwm.edu\/field-station\/wp-content\/uploads\/sites\/380\/2020\/05\/ant20-1rz.jpg 700w, https:\/\/uwm.edu\/field-station\/wp-content\/uploads\/sites\/380\/2020\/05\/ant20-1rz-300x214.jpg 300w\" sizes=\"auto, (max-width: 700px) 100vw, 700px\" \/><\/figure>\n\n\n\n<p><strong>BAG WORM<\/strong> &#8211; This little collection of plant material looks like a case made by a bag worm moth larva called <a href=\"https:\/\/bugguide.net\/node\/view\/1098038\/bgimage\"><em>Psyche casta<\/em><\/a>. The BugLady often sees these on screens and siding and even on leaves, but never before on flowers. Larvae make the shelters, enlarge the shelters as they grow, pupate in the shelters, and the wingless adult females receive suitors in the shelters, and lay their eggs there.<\/p>\n\n\n\n<figure class=\"aligncenter uwm-c-img--center\"><img loading=\"lazy\" decoding=\"async\" width=\"500\" height=\"500\" src=\"https:\/\/uwm.edu\/field-station\/wp-content\/uploads\/sites\/380\/2020\/05\/bagworm20-1rz.jpg\" alt=\"Bagworm\" class=\"wp-image-11567\" srcset=\"https:\/\/uwm.edu\/field-station\/wp-content\/uploads\/sites\/380\/2020\/05\/bagworm20-1rz.jpg 500w, https:\/\/uwm.edu\/field-station\/wp-content\/uploads\/sites\/380\/2020\/05\/bagworm20-1rz-300x300.jpg 300w, https:\/\/uwm.edu\/field-station\/wp-content\/uploads\/sites\/380\/2020\/05\/bagworm20-1rz-150x150.jpg 150w\" sizes=\"auto, (max-width: 500px) 100vw, 500px\" \/><\/figure>\n\n\n\n<p><strong>SYRPHID FLY<\/strong> \u2013 aka Hover or Flower fly. A great group of often-exquisitely-marked bee mimics that feed on pollen and nectar.<\/p>\n\n\n\n<figure class=\"aligncenter uwm-c-img--center\"><img loading=\"lazy\" decoding=\"async\" width=\"700\" height=\"371\" src=\"https:\/\/uwm.edu\/field-station\/wp-content\/uploads\/sites\/380\/2020\/05\/syrphid10-3.jpg\" alt=\"Syrphid fly\" class=\"wp-image-11568\" srcset=\"https:\/\/uwm.edu\/field-station\/wp-content\/uploads\/sites\/380\/2020\/05\/syrphid10-3.jpg 700w, https:\/\/uwm.edu\/field-station\/wp-content\/uploads\/sites\/380\/2020\/05\/syrphid10-3-300x159.jpg 300w\" sizes=\"auto, (max-width: 700px) 100vw, 700px\" \/><\/figure>\n\n\n\n<p><strong>MOSQUITO WITH MITE<\/strong> \u2013 Both male and female mosquitoes feed on nectar \u2013 males exclusively and females as a supplement. This one is being fed upon by the nymph of a water mite that attached when the mosquito was in its aquatic, larval stage.<\/p>\n\n\n\n<figure class=\"aligncenter uwm-c-img--center\"><img loading=\"lazy\" decoding=\"async\" width=\"700\" height=\"500\" src=\"https:\/\/uwm.edu\/field-station\/wp-content\/uploads\/sites\/380\/2020\/05\/mosquito-mite17-4.jpg\" alt=\"Mosquito with Mite\" class=\"wp-image-11569\" srcset=\"https:\/\/uwm.edu\/field-station\/wp-content\/uploads\/sites\/380\/2020\/05\/mosquito-mite17-4.jpg 700w, https:\/\/uwm.edu\/field-station\/wp-content\/uploads\/sites\/380\/2020\/05\/mosquito-mite17-4-300x214.jpg 300w\" sizes=\"auto, (max-width: 700px) 100vw, 700px\" \/><\/figure>\n\n\n\n<p><strong>BUTTERCUP BEETLE<\/strong> <em>Prasocuris vitata<\/em> \u2013 A leaf beetle (<em>Chrysomelid<\/em>) that is a buttercup\/marsh marigold specialist. Check out this previous <a href=\"https:\/\/uwm.edu\/field-station\/bug-of-the-week\/buttercup-beetle\/\">Bug of the Week on the Buttercup Beetle<\/a>.<\/p>\n\n\n\n<figure class=\"aligncenter uwm-c-img--center\"><img loading=\"lazy\" decoding=\"async\" width=\"700\" height=\"500\" src=\"https:\/\/uwm.edu\/field-station\/wp-content\/uploads\/sites\/380\/2020\/05\/buttercup-beetle20-2brz.jpg\" alt=\"Buttercup Beetle\" class=\"wp-image-11570\" srcset=\"https:\/\/uwm.edu\/field-station\/wp-content\/uploads\/sites\/380\/2020\/05\/buttercup-beetle20-2brz.jpg 700w, https:\/\/uwm.edu\/field-station\/wp-content\/uploads\/sites\/380\/2020\/05\/buttercup-beetle20-2brz-300x214.jpg 300w\" sizes=\"auto, (max-width: 700px) 100vw, 700px\" \/><\/figure>\n\n\n\n<p><strong>PLATEUMARIS NITIDA<\/strong> &#8211; The BugLady\u2019s first thought was \u201cwhat\u2019s a Donacia (<a href=\"https:\/\/bugguide.net\/node\/view\/1470040\/bgimage\">a water lily leaf beetle<\/a>) doing in a marsh marigold thicket, far from the nearest water lily?\u201d Then she looked up the second beetle mentioned in the Illinois Wildflower site. It turns out that some members of the genus <em>Plateumaris<\/em> are Donacia look-alikes and marsh marigold is listed as the host plant of at least one species. The beetle\u2019s gleam is due to physics, not pigments. While looking for info about this beetle, the BugLady came across this <a href=\"https:\/\/www.researchgate.net\/publication\/240671564_Feeding_behavior_of_leaf_beetles_Coleoptera_Chrysomelidae\">nicely illustrated paper<\/a> about the feeding behaviors of leaf beetles.<\/p>\n\n\n\n<figure class=\"aligncenter uwm-c-img--center\"><img loading=\"lazy\" decoding=\"async\" width=\"700\" height=\"500\" src=\"https:\/\/uwm.edu\/field-station\/wp-content\/uploads\/sites\/380\/2020\/05\/plateumaris-nitada20-1.jpg\" alt=\"Plateumaris Nitada\" class=\"wp-image-11571\" srcset=\"https:\/\/uwm.edu\/field-station\/wp-content\/uploads\/sites\/380\/2020\/05\/plateumaris-nitada20-1.jpg 700w, https:\/\/uwm.edu\/field-station\/wp-content\/uploads\/sites\/380\/2020\/05\/plateumaris-nitada20-1-300x214.jpg 300w\" sizes=\"auto, (max-width: 700px) 100vw, 700px\" \/><\/figure>\n\n\n\n<p>Also seen were a <a href=\"https:\/\/bugguide.net\/node\/view\/1322782\/bgpage\">plume moth<\/a>, a soldier beetle, several more spider species, and a mining bee, and a clever shelter built by a spider that bent a yellow sepal over and anchored it with silk.<\/p>\n\n\n\n<p>FYI \u2013 BOTW will, as usual, be Closed for June, so that the BugLady can go out and photograph the heck out of the local nature areas. She will post tasteful and timely reruns.<\/p>\n\n\n\n<p>The BugLady<\/p>\n","protected":false},"excerpt":{"rendered":"<p>May is American wetlands month, so we\u2019ll end it in the swamp, in the company of Marsh Marigolds, the flowers that turn newly thawed wetlands a riotous yellow from the last days of April through much of May. Skunk cabbage and pussy willows may whisper the arrival of spring, but marsh marigolds crank up the volume. The BugLady should have started this project two weeks ago when the marsh marigold was at its peak, but the truth is that despite the masses of flowers it produces, she seldom sees many insects on it, and the ones she sees are as likely to be resting as dining.<\/p>\n","protected":false},"author":5995,"featured_media":11572,"comment_status":"closed","ping_status":"closed","sticky":false,"template":"","format":"standard","meta":{"_acf_changed":false,"footnotes":"","uwm_wg_additional_authors":[]},"categories":[8],"tags":[127,238,30,80,9,31,442],"class_list":["post-11559","post","type-post","status-publish","format-standard","has-post-thumbnail","hentry","category-bug-of-the-week","tag-ants","tag-bees","tag-beetles","tag-flies","tag-mites","tag-spiders","tag-worms"],"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\/wildflower-watch-marsh-marigold\/\" \/>\n<meta property=\"og:locale\" content=\"en_US\" \/>\n<meta property=\"og:type\" content=\"article\" \/>\n<meta property=\"og:title\" content=\"Wildflower Watch \u2013Marsh Marigold\" \/>\n<meta property=\"og:description\" content=\"May is American wetlands month, so we\u2019ll end it in the swamp, in the company of Marsh Marigolds, the flowers that turn newly thawed wetlands a riotous yellow from the last days of April through much of May. Skunk cabbage and pussy willows may whisper the arrival of spring, but marsh marigolds crank up the volume. 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