{"id":12860,"date":"2022-03-18T10:31:09","date_gmt":"2022-03-18T15:31:09","guid":{"rendered":"https:\/\/uwm.edu\/field-station\/?p=12860"},"modified":"2022-03-18T10:31:09","modified_gmt":"2022-03-18T15:31:09","slug":"small-blue-butterflies-2","status":"publish","type":"post","link":"https:\/\/uwm.edu\/field-station\/bug-of-the-week\/small-blue-butterflies-2\/","title":{"rendered":"Small Blue Butterflies"},"content":{"rendered":"<p>Greetings, BugFans,<\/p>\n<p>The BugLady has been enjoying the recent \u201ctropical\u201d temperatures (in the high 40\u2019s) and her thoughts have been turning to butterflies. Someone asked her recently what butterflies might be aloft as spring approaches. Along with the <a href=\"https:\/\/uwm.edu\/field-station\/mourning-cloak-revisited\/\">Mourning Cloaks<\/a> and <a href=\"https:\/\/uwm.edu\/field-station\/anglewings\/\">Anglewings<\/a> (Commas and Question Marks), which overwinter as adults and so are all set to go when the air warms, the first butterflies she sees are usually Eastern Tailed-Blues and Spring Azures, which, if the weather stays mild, could grace us by the end of March\/beginning of April. The following is a rerun of an episode from the spring of 2010 (with some new words and pictures).<\/p>\n<p>Today\u2019s episode considers three small, blue \u201clook-alike\u201d butterflies \u2013 the Spring Azure and the Summer Azure, often referred to as the Spring Spring Azure and the Summer Spring Azure, and the Eastern Tailed Blue. The Spring Azures have long been considered to be one large and gloriously diverse species made up of several subspecies. Now they\u2019re thought by many to be a number of full species. For an explanation, see <a href=\"https:\/\/wisconsinbutterflies.org\/butterfly\/species\/53-spring-azure\">this guide <i class=\"fa fa-external-link\"><\/i><\/a>. Besides the Spring Azures, a number of other species of Blues\/Azures occur in Wisconsin.<\/p>\n<p>BugFans who want to finesse identification can always refer to them thoughtfully as the \u201cSpring Azure Complex\u201d and can indulge in a bit of Bug \u201cone-up-man-ship\u201d by lamenting the lack of DNA sequencing on the group. Remember, though, the words of biologist William Keeton, who said that humans are the only organism to whom this taxonomic lumping and splitting and nattering makes any difference. The organisms themselves know who they are &#8211; in this case, they are butterflies in the family Lycaenidae, the Gossamer-wing butterflies, a large group of butterflies that can be found around the globe. The BugLady knows them as tiny bits of sky that flicker through sun-dappled swamps, stream sides, woods openings and edges.<\/p>\n<p><strong>SPRING SPRING AZURES (SpSpAz)<\/strong><\/p>\n<p>SpSpAzs typically emerge early and can survive the frosty nights of mid-spring. Compared to the Summer Spring Azure, the SpSpAz is darker, and its black spots may be larger and more distinct. Both species are sexually dimorphic (\u201ctwo forms\u201d); in this case, the females\u2019 wings have wide black borders and the males\u2019 don\u2019t. Their wingspread is 1\u201d to 1 \u00bc\u201d. Most references say that Wisconsin\u2019s SpSpAz is the species Celastrina ladon (or the subspecies C. ladon ladon). Others point out that because C. ladon\u2019s chief food plant, flowering dogwood, doesn\u2019t grow in Wisconsin, our earliest SpSpAz is likely C. lucia (or C. ladon lucia).<\/p>\n<p><img loading=\"lazy\" decoding=\"async\" class=\"size-medium wp-image-12863 alignright\" src=\"https:\/\/uwm.edu\/field-station\/wp-content\/uploads\/sites\/380\/2022\/03\/azure-spr-spr19-1-300x214.jpg\" alt=\"\" width=\"300\" height=\"214\" srcset=\"https:\/\/uwm.edu\/field-station\/wp-content\/uploads\/sites\/380\/2022\/03\/azure-spr-spr19-1-300x214.jpg 300w, https:\/\/uwm.edu\/field-station\/wp-content\/uploads\/sites\/380\/2022\/03\/azure-spr-spr19-1-768x549.jpg 768w, https:\/\/uwm.edu\/field-station\/wp-content\/uploads\/sites\/380\/2022\/03\/azure-spr-spr19-1.jpg 991w\" sizes=\"auto, (max-width: 300px) 100vw, 300px\" \/><\/p>\n<p>In order to fly in April and May, SpSpAzs overwinter as a pupa\/chrysalis. Adults don\u2019t live long or eat much. They may drink a little nectar or get liquid and minerals from the mud (a behavior called puddling), and males may gather on damp ground in groups. Males patrol for mates in forest openings and edges and along forest trails, sometimes ascending to the tree-tops in the thin sunshine of spring. A female will mate within hours of emerging. She lays her eggs the next day on the flower buds of host plants like maple-leaved viburnum, black cherry, and sumac, and then she dies.<\/p>\n<p><img loading=\"lazy\" decoding=\"async\" class=\"size-medium wp-image-12864 alignleft\" src=\"https:\/\/uwm.edu\/field-station\/wp-content\/uploads\/sites\/380\/2022\/03\/azure-spr-spr21-1-300x214.jpg\" alt=\"\" width=\"300\" height=\"214\" srcset=\"https:\/\/uwm.edu\/field-station\/wp-content\/uploads\/sites\/380\/2022\/03\/azure-spr-spr21-1-300x214.jpg 300w, https:\/\/uwm.edu\/field-station\/wp-content\/uploads\/sites\/380\/2022\/03\/azure-spr-spr21-1-768x549.jpg 768w, https:\/\/uwm.edu\/field-station\/wp-content\/uploads\/sites\/380\/2022\/03\/azure-spr-spr21-1.jpg 865w\" sizes=\"auto, (max-width: 300px) 100vw, 300px\" \/><\/p>\n<p>When her eggs hatch, the caterpillars &#8211; green, conspicuously segmented, and <a href=\"https:\/\/wisconsinpollinators.com\/Caterpillars\/C_SpringAzure.aspx\">covered with white stubble <i class=\"fa fa-external-link\"><\/i><\/a> \u2013 eat the flowers first and then the developing fruits. The flowers they eat tend to be frequented by ants (unsung pollinators of flowers), which discover, care for and protect the caterpillars (<a href=\"https:\/\/bugguide.net\/node\/view\/45799\/bgimage\">here\u2019s an ant on a different species <i class=\"fa fa-external-link\"><\/i><\/a>). In return, the ants harvest honeydew produced by the caterpillars. The larval stage takes about a month, but the resting\/pupal stage is a whopper, lasting from early summer until the next spring.<\/p>\n<p><strong>SUMMER SPRING AZURE (SuSpAz)<\/strong><\/p>\n<p>The second Azure, which succeeds the first chronologically, is the \u201cSummer\u201d Spring Azure (Celastrina neglecta), sometimes listed as a subspecies C. ladon neglecta. If you get one to sit still for you, you may note that the SuSpA has lighter underwings than the SpSpAz, and its black spots are smaller and less distinct (to see an Azure with its wings folded is to miss the point; it is the tops of their wings that give Azures their name). An Azure seen after mid-June is most likely a SuSpAz, but it never hurts to check. SuSpAzs fly from June until the first frosts in parks and open fields as well as wood openings and edges.<\/p>\n<p><img loading=\"lazy\" decoding=\"async\" class=\"alignnone  wp-image-12865\" src=\"https:\/\/uwm.edu\/field-station\/wp-content\/uploads\/sites\/380\/2022\/03\/azure-su-spr18-6r-300x214.jpg\" alt=\"\" width=\"245\" height=\"175\" srcset=\"https:\/\/uwm.edu\/field-station\/wp-content\/uploads\/sites\/380\/2022\/03\/azure-su-spr18-6r-300x214.jpg 300w, https:\/\/uwm.edu\/field-station\/wp-content\/uploads\/sites\/380\/2022\/03\/azure-su-spr18-6r-768x549.jpg 768w, https:\/\/uwm.edu\/field-station\/wp-content\/uploads\/sites\/380\/2022\/03\/azure-su-spr18-6r.jpg 817w\" sizes=\"auto, (max-width: 245px) 100vw, 245px\" \/> \u00a0<img loading=\"lazy\" decoding=\"async\" class=\"alignnone  wp-image-12866\" src=\"https:\/\/uwm.edu\/field-station\/wp-content\/uploads\/sites\/380\/2022\/03\/azure-su-spr19-5rz-300x214.jpg\" alt=\"\" width=\"245\" height=\"175\" srcset=\"https:\/\/uwm.edu\/field-station\/wp-content\/uploads\/sites\/380\/2022\/03\/azure-su-spr19-5rz-300x214.jpg 300w, https:\/\/uwm.edu\/field-station\/wp-content\/uploads\/sites\/380\/2022\/03\/azure-su-spr19-5rz-1024x731.jpg 1024w, https:\/\/uwm.edu\/field-station\/wp-content\/uploads\/sites\/380\/2022\/03\/azure-su-spr19-5rz-768x549.jpg 768w, https:\/\/uwm.edu\/field-station\/wp-content\/uploads\/sites\/380\/2022\/03\/azure-su-spr19-5rz.jpg 1050w\" sizes=\"auto, (max-width: 245px) 100vw, 245px\" \/><\/p>\n<p>Its life cycle is similar to that of the SpSpAz, with the same symbiotic assist from ants. Its larval host plants include later-blooming relatives of the SpSpAz host plants. The pupae of the two species are very similar, and one reference noted that if they are separate species, they separated recently (geologically speaking), perhaps as little as a few thousand years ago. The chrysalis of the SuSpAz does not rouse when the soil warms in spring; it waits until early summer to emerge. There are at least two broods each summer, so SuSpAzs decorate the landscape into the fall.<\/p>\n<p>A Wild Card Azure is the recently-recognized (2005) <a href=\"https:\/\/bugguide.net\/node\/view\/1113261\/bgimage\">Cherry Gall Azure <i class=\"fa fa-external-link\"><\/i><\/a> (CGAz) (C. serotina), which has been recorded in Wisconsin and is said to take up the slack between the decline of the SpSpAz and the emergence of the SuSpAz. The caterpillar of the CGA has adapted to feeding on the nipple galls created by eriophyid mites (of previous BOTW fame) on cherry leaves.<\/p>\n<p><img loading=\"lazy\" decoding=\"async\" class=\" wp-image-12868 alignleft\" src=\"https:\/\/uwm.edu\/field-station\/wp-content\/uploads\/sites\/380\/2022\/03\/e-tailed-blue-11b-300x300.jpg\" alt=\"\" width=\"180\" height=\"180\" srcset=\"https:\/\/uwm.edu\/field-station\/wp-content\/uploads\/sites\/380\/2022\/03\/e-tailed-blue-11b-300x300.jpg 300w, https:\/\/uwm.edu\/field-station\/wp-content\/uploads\/sites\/380\/2022\/03\/e-tailed-blue-11b-150x150.jpg 150w, https:\/\/uwm.edu\/field-station\/wp-content\/uploads\/sites\/380\/2022\/03\/e-tailed-blue-11b-768x768.jpg 768w, https:\/\/uwm.edu\/field-station\/wp-content\/uploads\/sites\/380\/2022\/03\/e-tailed-blue-11b.jpg 776w\" sizes=\"auto, (max-width: 180px) 100vw, 180px\" \/><\/p>\n<p><strong>EASTERN TAILED-BLUE (ETB)<\/strong><\/p>\n<p>The tails of the Eastern Tailed-Blue (Everes comyntas or Cupido comyntas, depending on what book you look at) are not visible in flight &#8211; in fact, the tails for which they are named are fragile, and wear-and-tear renders many Tailed-Blues tail-less. They can still be told from the Azures by the two orange spots on the underside of the hind wing right above the tail (and just for fun, <a href=\"https:\/\/wisconsinbutterflies.org\/butterfly\/subfamily\/12-hairstreaks\">check out some pictures of hairstreaks <i class=\"fa fa-external-link\"><\/i><\/a>). The upper wings of Eastern Tailed-Blues are darker than Azures\u2019 wings &#8211; the top surface of a male\u2019s wings is purplish blue, and a female\u2019s wings are brownish -.<\/p>\n<p>They change seasonally, too; the first brood of summer has brighter males and bluer females than the last. ETBs are common, tiny (they can be half the size of a SuSpAz), sun-loving butterflies of fields, restored prairies, power line rights-of-way, gardens, and other open areas.<\/p>\n<p><img loading=\"lazy\" decoding=\"async\" class=\"wp-image-12869 alignnone\" src=\"https:\/\/uwm.edu\/field-station\/wp-content\/uploads\/sites\/380\/2022\/03\/e-tailed-blue18-11-300x300.jpg\" alt=\"\" width=\"175\" height=\"175\" srcset=\"https:\/\/uwm.edu\/field-station\/wp-content\/uploads\/sites\/380\/2022\/03\/e-tailed-blue18-11-300x300.jpg 300w, https:\/\/uwm.edu\/field-station\/wp-content\/uploads\/sites\/380\/2022\/03\/e-tailed-blue18-11-150x150.jpg 150w, https:\/\/uwm.edu\/field-station\/wp-content\/uploads\/sites\/380\/2022\/03\/e-tailed-blue18-11-768x768.jpg 768w, https:\/\/uwm.edu\/field-station\/wp-content\/uploads\/sites\/380\/2022\/03\/e-tailed-blue18-11.jpg 849w\" sizes=\"auto, (max-width: 175px) 100vw, 175px\" \/> \u00a0<img loading=\"lazy\" decoding=\"async\" class=\"wp-image-12870 alignnone\" src=\"https:\/\/uwm.edu\/field-station\/wp-content\/uploads\/sites\/380\/2022\/03\/e-tailed-blue19-20-300x214.jpg\" alt=\"\" width=\"245\" height=\"175\" srcset=\"https:\/\/uwm.edu\/field-station\/wp-content\/uploads\/sites\/380\/2022\/03\/e-tailed-blue19-20-300x214.jpg 300w, https:\/\/uwm.edu\/field-station\/wp-content\/uploads\/sites\/380\/2022\/03\/e-tailed-blue19-20-1024x731.jpg 1024w, https:\/\/uwm.edu\/field-station\/wp-content\/uploads\/sites\/380\/2022\/03\/e-tailed-blue19-20-768x549.jpg 768w, https:\/\/uwm.edu\/field-station\/wp-content\/uploads\/sites\/380\/2022\/03\/e-tailed-blue19-20.jpg 1113w\" sizes=\"auto, (max-width: 245px) 100vw, 245px\" \/><\/p>\n<p>Adult ETBs have a short proboscis and so feed at flowers with easy-to-reach nectar, and adult males gather at mud puddles. Caterpillars eat the flower buds, flowers, seeds and new leaves of their host plants in the Legume family like yellow sweet clover, alfalfa, vetch, white clover, wild pea, bush clover; and tick-trefoil. As food generalists, they can use a succession of host plants and produce several broods that fly during the summer and well into fall. ETBs overwinter as caterpillars (often in the seed pod of their legume host) and pupate the following spring.<\/p>\n<p><em>The BugLady<\/em><\/p>\n<p>&nbsp;<\/p>\n","protected":false},"excerpt":{"rendered":"<p>Greetings, BugFans, The BugLady has been enjoying the recent \u201ctropical\u201d temperatures (in the high 40\u2019s) and her thoughts have been turning to butterflies. Someone asked her recently what butterflies might be aloft as spring approaches. Along with the Mourning Cloaks &hellip;<\/p>\n","protected":false},"author":28112,"featured_media":12862,"comment_status":"closed","ping_status":"closed","sticky":false,"template":"","format":"standard","meta":{"_acf_changed":false,"footnotes":"","uwm_wg_additional_authors":[]},"categories":[8],"tags":[41,158],"class_list":["post-12860","post","type-post","status-publish","format-standard","has-post-thumbnail","hentry","category-bug-of-the-week","tag-butterflies","tag-caterpillars"],"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\/small-blue-butterflies-2\/\" \/>\n<meta property=\"og:locale\" content=\"en_US\" \/>\n<meta property=\"og:type\" content=\"article\" \/>\n<meta property=\"og:title\" content=\"Small Blue Butterflies\" \/>\n<meta property=\"og:description\" content=\"Greetings, BugFans, The BugLady has been enjoying the recent \u201ctropical\u201d temperatures (in the high 40\u2019s) and her thoughts have been turning to butterflies. 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