{"id":12977,"date":"2022-05-04T11:40:34","date_gmt":"2022-05-04T16:40:34","guid":{"rendered":"https:\/\/uwm.edu\/field-station\/?p=12977"},"modified":"2022-05-04T11:47:00","modified_gmt":"2022-05-04T16:47:00","slug":"gray-comma-butterfly-the-other-comma","status":"publish","type":"post","link":"https:\/\/uwm.edu\/field-station\/bug-of-the-week\/gray-comma-butterfly-the-other-comma\/","title":{"rendered":"Gray Comma Butterfly \u2013 the Other Comma"},"content":{"rendered":"<p><i>Note: All links below go to external sites.<\/i><\/p>\n<p>Howdy, BugFans,<\/p>\n<p><a href=\"https:\/\/bugguide.net\/node\/view\/1386003\/bgimage\">Gray Commas<\/a> (<em>Polygonia progne<\/em>) are in the Brush-footed butterfly family Nymphalidae \u2013 \u201cbrush-footed\u201d because their front pair of legs is small and \u201cbrush-like\u201d and tucked in close to their body, making them look like four-legged butterflies.<\/p>\n<p><img loading=\"lazy\" decoding=\"async\" class=\"size-thumbnail wp-image-12980 alignleft\" src=\"https:\/\/uwm.edu\/field-station\/wp-content\/uploads\/sites\/380\/2022\/05\/comma-gray21-1rz-150x150.jpg\" alt=\"Gray Comma Butterfly\" width=\"150\" height=\"150\" srcset=\"https:\/\/uwm.edu\/field-station\/wp-content\/uploads\/sites\/380\/2022\/05\/comma-gray21-1rz-150x150.jpg 150w, https:\/\/uwm.edu\/field-station\/wp-content\/uploads\/sites\/380\/2022\/05\/comma-gray21-1rz-300x300.jpg 300w, https:\/\/uwm.edu\/field-station\/wp-content\/uploads\/sites\/380\/2022\/05\/comma-gray21-1rz-768x768.jpg 768w, https:\/\/uwm.edu\/field-station\/wp-content\/uploads\/sites\/380\/2022\/05\/comma-gray21-1rz.jpg 875w\" sizes=\"auto, (max-width: 150px) 100vw, 150px\" \/>These are <a href=\"https:\/\/www.butterfliesandmoths.org\/species\/Polygonia-progne\">butterflies<\/a> with somewhat northern proclivities; they\u2019re found across Canada and the northern part of North America but are mostly missing from our southern tier of states. In <span style=\"text-decoration: underline\">Butterflies of the Great Lakes Region<\/span>, Douglas and Douglas speculate that their original (pre-settlement) habitat was probably sunny areas that opened up within dense woodlands when trees fell over and left a hole in the canopy. Today they\u2019re found in clearings in deciduous and mixed woodlands, along stream edges, and along dirt roads, and also in gardens and yards. Mead, in <span style=\"text-decoration: underline\">Butterflies of the North Woods<\/span>, says that they are \u201c<em>maybe the most widespread of all the anglewings.<\/em>\u201d The (fabulous) Butterflies of Massachusetts website suggests that Gray Commas \u201c<em>may be vulnerable to range contraction as climate warms.<\/em>\u201d<\/p>\n<p>Because of the outlines of their wings, Question Marks and commas (genus <em>Polygonia<\/em>) are called anglewings. There are five anglewings in Wisconsin &#8211; Gray Commas, Eastern Commas and Question Marks are found throughout the state, and Green Commas and Satyr Commas live \u201cUp North.\u201d<\/p>\n<p>They\u2019re called anglewings because of the cut of their jib, and \u201ccomma\u201d because of the silvery punctuation marks on the undersides of their wings. The <a href=\"https:\/\/bugguide.net\/node\/view\/197220\/bgimage\">Gray Comma\u2019s comma<\/a> resembles a Nike swoosh compared to the <a href=\"https:\/\/bugguide.net\/node\/view\/1567724\/bgimage\">Eastern Comma\u2019s<\/a> thickened and hooked mark, and the <a href=\"https:\/\/bugguide.net\/node\/view\/1583855\/bgimage\">Question Mark\u2019s<\/a> question mark.<\/p>\n<p><img loading=\"lazy\" decoding=\"async\" class=\"size-thumbnail wp-image-12979 alignleft\" src=\"https:\/\/uwm.edu\/field-station\/wp-content\/uploads\/sites\/380\/2022\/05\/comma-gray18-9rz-150x150.jpg\" alt=\"\" width=\"150\" height=\"150\" srcset=\"https:\/\/uwm.edu\/field-station\/wp-content\/uploads\/sites\/380\/2022\/05\/comma-gray18-9rz-150x150.jpg 150w, https:\/\/uwm.edu\/field-station\/wp-content\/uploads\/sites\/380\/2022\/05\/comma-gray18-9rz-300x300.jpg 300w, https:\/\/uwm.edu\/field-station\/wp-content\/uploads\/sites\/380\/2022\/05\/comma-gray18-9rz-768x768.jpg 768w, https:\/\/uwm.edu\/field-station\/wp-content\/uploads\/sites\/380\/2022\/05\/comma-gray18-9rz.jpg 875w\" sizes=\"auto, (max-width: 150px) 100vw, 150px\" \/>According to the Missouri Department of Conservation\u2019s online Field Guide, \u201c<em>Congratulations if you can tell the difference between a gray comma and eastern comma! This shows you\u2019ve definitely progressed beyond a \u201cbeginner\u201d level in butterfly identification<\/em>.\u201d By that yardstick, the BugLady hasn\u2019t quite arrived yet, but she\u2019s getting closer. She likes taking their pictures and putting their images up on the monitor, pulling out a field guide, and worrying them a little bit.<\/p>\n<p>Here\u2019s why you have to look twice when you\u2019re identifying anglewings:<\/p>\n<ul>\n<li><a href=\"https:\/\/bugguide.net\/node\/view\/1214968\/bgimage\">Gray Comma<\/a><\/li>\n<li><a href=\"https:\/\/bugguide.net\/node\/view\/1620700\/bgimage\">Eastern Comma<\/a><\/li>\n<li><a href=\"https:\/\/bugguide.net\/node\/view\/1774878\/bgimage\">Question Mark<\/a><\/li>\n<\/ul>\n<p>There are some handy tips <a href=\"https:\/\/wisconsinbutterflies.org\/butterfly\/subfamily\/17-true-brushfoots\">here<\/a> for distinguishing them.<\/p>\n<p><img loading=\"lazy\" decoding=\"async\" class=\"size-thumbnail wp-image-12982 alignleft\" src=\"https:\/\/uwm.edu\/field-station\/wp-content\/uploads\/sites\/380\/2022\/05\/comma-gray21-3arrz-150x150.jpg\" alt=\"Gray Comma Butterfly\" width=\"150\" height=\"150\" srcset=\"https:\/\/uwm.edu\/field-station\/wp-content\/uploads\/sites\/380\/2022\/05\/comma-gray21-3arrz-150x150.jpg 150w, https:\/\/uwm.edu\/field-station\/wp-content\/uploads\/sites\/380\/2022\/05\/comma-gray21-3arrz-300x300.jpg 300w, https:\/\/uwm.edu\/field-station\/wp-content\/uploads\/sites\/380\/2022\/05\/comma-gray21-3arrz-768x768.jpg 768w, https:\/\/uwm.edu\/field-station\/wp-content\/uploads\/sites\/380\/2022\/05\/comma-gray21-3arrz.jpg 875w\" sizes=\"auto, (max-width: 150px) 100vw, 150px\" \/>With a wingspread of about 2 inches, these are nice-sized butterflies, and seeing one with its wings open in the sunlight is a real treat! When they\u2019re sitting on a tree trunk with their wings <a href=\"https:\/\/bugguide.net\/node\/view\/1937383\/bgimage\">closed<\/a>, they can be remarkably-well camouflaged.<\/p>\n<p>Like other anglewings, there are two generations of Gray Commas each year. The second generation emerges in mid-fall, but instead of mating, they overwinter as adults, tucked away in a sheltered spot called a hibernaculum (they may fly briefly during a winter thaw). They emerge in April and May and go about the business of producing the summer generation. Like other anglewings, Gray Commas are \u201cseasonally dimorphic\u201d \u2013 the <a href=\"https:\/\/bugguide.net\/node\/view\/197221\/bgimage\">summer brood<\/a> has darker hind wings, than the <a href=\"https:\/\/bugguide.net\/node\/view\/742721\/bgimage\">winter brood<\/a>.<\/p>\n<p>Gray Commas are jumpy and nervous, and they have lots of attitude. Males scout for receptive females from a perch at the edge of a clearing; they are territorial and will engage with anything that crosses their turf. Females lay eggs singly on the leaves of host plants \u2013 gooseberries (genus <em>Ribes<\/em>), plus the odd currant (also in the genus <em>Ribes<\/em>), plus azalea and elm.<\/p>\n<p>Early spring butterflies (and other insects) must have a way to get warm and stay warm (to this end, they are often hairier than later-season species); Gray Commas often warm up by basking in the sun (they have favorite perches), and they can also generate heat by shivering the muscles in their thorax (muscular thermogenesis).<\/p>\n<p>It\u2019s not often, when the BugLady researches insects, that the dramatic plot twist concerns the insect\u2019s diet. The Gray Comma\u2019s menu looks pretty straightforward on the face of it, but there\u2019s a backstory that the BugLady heard a very long time ago and then forgot. Like other butterflies that emerge early, commas rarely visit flowers, preferring to sip the juices of rotting fruits, carrion, and dung, to visit sap drips, and to glean minerals from damp soil. <a href=\"https:\/\/bugguide.net\/node\/view\/937966\/bgimage\">Caterpillars<\/a> feed on the undersides of gooseberry leaves, and the butterflies readily adopted European gooseberries that were introduced by the Settlers (the caterpillars were considered pests of cultivated gooseberries in some places). Food was plentiful. Life was good.<\/p>\n<p><img loading=\"lazy\" decoding=\"async\" class=\"size-thumbnail wp-image-12981 alignright\" src=\"https:\/\/uwm.edu\/field-station\/wp-content\/uploads\/sites\/380\/2022\/05\/comma-gray21-2rz-150x150.jpg\" alt=\"Gray Comma Butterfly\" width=\"150\" height=\"150\" \/>The Butterflies of Massachusetts website tells us what happened next: \u201c<em>Then, around 1910, an American nurseryman imported thousands of white pine seedlings which were infected with European white pine blister rust, for which Ribes plant species are the alternate hosts. Our native white pine, Pinus strobus was not resistant, and this commercially important species was threatened. To protect the lumber industry, importing or cultivating all currants and gooseberries was banned in most New England states. In the 1920\u2019s and 1930s both native and cultivated Ribes plants were ripped up all across New England and the Great Lakes areas, as well as further west. By 1966 the ban was lifted in many areas, but is still in place in Massachusetts (Cullina 2002: 221-2). The host plants for Gray Comma therefore declined dramatically, as did the butterfly.<\/em>\u201d (Since that was written, limited quantities of Ribes may be planted in Massachusetts, by permit only. All clear in Wisconsin since 1966.)<\/p>\n<p>Fun Fact about <a href=\"https:\/\/bugguide.net\/node\/view\/1578095\/bgimage\">Gray Commas<\/a>: their caterpillars rest below the leaf in a U-shape, hanging on with only their middle set of prolegs (the fleshy, \u201cfalse\u201d legs behind the three pairs of true legs on the thorax). When they\u2019re alarmed, they wave their spiny front and rear ends around, which apparently makes a predator think again.<\/p>\n<p>May is American Wetlands Month! Wetlands support vast numbers of insects as temporary nurseries (for dragonflies and damselflies and more), as permanent homes, and as hunting grounds.<\/p>\n<p>Go outside \u2013 appreciate a wetland!<\/p>\n<p>The BugLady<\/p>\n","protected":false},"excerpt":{"rendered":"<p>Note: All links below go to external sites. Howdy, BugFans, Gray Commas (Polygonia progne) are in the Brush-footed butterfly family Nymphalidae \u2013 \u201cbrush-footed\u201d because their front pair of legs is small and \u201cbrush-like\u201d and tucked in close to their body, &hellip;<\/p>\n","protected":false},"author":30795,"featured_media":12978,"comment_status":"closed","ping_status":"closed","sticky":false,"template":"","format":"standard","meta":{"_acf_changed":false,"footnotes":"","uwm_wg_additional_authors":[]},"categories":[8],"tags":[598,596,597],"class_list":["post-12977","post","type-post","status-publish","format-standard","has-post-thumbnail","hentry","category-bug-of-the-week","tag-eastern-comma","tag-gray-comma-butterfly","tag-polygonia-progne"],"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\/gray-comma-butterfly-the-other-comma\/\" \/>\n<meta property=\"og:locale\" content=\"en_US\" \/>\n<meta property=\"og:type\" content=\"article\" \/>\n<meta property=\"og:title\" content=\"Gray Comma Butterfly \u2013 the Other Comma\" \/>\n<meta property=\"og:description\" content=\"Note: All links below go to external sites. 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