  {"id":11610,"date":"2020-06-24T14:16:22","date_gmt":"2020-06-24T19:16:22","guid":{"rendered":"https:\/\/uwm.edu\/field-station\/?p=11610"},"modified":"2020-06-24T14:17:45","modified_gmt":"2020-06-24T19:17:45","slug":"closed-for-june-spectacular-summer-dragonflies","status":"publish","type":"post","link":"https:\/\/uwm.edu\/field-station\/bug-of-the-week\/closed-for-june-spectacular-summer-dragonflies\/","title":{"rendered":"Closed for June \u2013 Spectacular Summer Dragonflies"},"content":{"rendered":"<p>Howdy, BugFans,<\/p>\n<p>This episode originally appeared in 2011 under the title of \u201cConfusing Summer Dragonflies.\u201d They are confusing in that they all have dark patches on their wings \u2013 interspersed with white patches in mature males but not in juvenile males. The word \u201cpruinose\u201d rears its head again, as the abdomens of males of today\u2019s dragonflies develop some degree of \u201choariness,\u201d due to the production of waxy scales, as they age.<\/p>\n<p><a href=\"https:\/\/uwm.edu\/field-station\/wp-content\/uploads\/sites\/380\/2020\/06\/12-spttd-skimmer-juv-male17-1.jpg\"><img loading=\"lazy\" decoding=\"async\" class=\"aligncenter wp-image-11613 size-full\" src=\"https:\/\/uwm.edu\/field-station\/wp-content\/uploads\/sites\/380\/2020\/06\/12-spttd-skimmer-juv-male17-1.jpg\" alt=\"Spotted Skimmer Dragonfly\" width=\"800\" height=\"571\" srcset=\"https:\/\/uwm.edu\/field-station\/wp-content\/uploads\/sites\/380\/2020\/06\/12-spttd-skimmer-juv-male17-1.jpg 800w, https:\/\/uwm.edu\/field-station\/wp-content\/uploads\/sites\/380\/2020\/06\/12-spttd-skimmer-juv-male17-1-300x214.jpg 300w, https:\/\/uwm.edu\/field-station\/wp-content\/uploads\/sites\/380\/2020\/06\/12-spttd-skimmer-juv-male17-1-768x548.jpg 768w\" sizes=\"auto, (max-width: 800px) 100vw, 800px\" \/><\/a><\/p>\n<p>Represented by 103 species in North America, the Skimmer family (Libellulidae) contains our most common and conspicuous dragonflies \u2013 Pennants, Meadowhawks, Gliders, Corporals, Pondhawks, Whitefaces, Saddlebags, Skimmers and the like. According to Sydney Dunkle in Dragonflies through Binoculars, they are colorful but not metallic, often have patterned wings, and their eyes contact each other at the top of their head. Skimmers are often sexually dimorphic, with colorful males and not-so-colorful females.<\/p>\n<p><a href=\"https:\/\/uwm.edu\/field-station\/wp-content\/uploads\/sites\/380\/2020\/06\/12-spttd-skimmer-fe12-2rz.jpg\"><img loading=\"lazy\" decoding=\"async\" class=\"aligncenter wp-image-11612 size-full\" src=\"https:\/\/uwm.edu\/field-station\/wp-content\/uploads\/sites\/380\/2020\/06\/12-spttd-skimmer-fe12-2rz.jpg\" alt=\"Spotted Skimmer Dragonfly\" width=\"800\" height=\"571\" srcset=\"https:\/\/uwm.edu\/field-station\/wp-content\/uploads\/sites\/380\/2020\/06\/12-spttd-skimmer-fe12-2rz.jpg 800w, https:\/\/uwm.edu\/field-station\/wp-content\/uploads\/sites\/380\/2020\/06\/12-spttd-skimmer-fe12-2rz-300x214.jpg 300w, https:\/\/uwm.edu\/field-station\/wp-content\/uploads\/sites\/380\/2020\/06\/12-spttd-skimmer-fe12-2rz-768x548.jpg 768w\" sizes=\"auto, (max-width: 800px) 100vw, 800px\" \/><\/a><\/p>\n<p>A female Skimmer doesn\u2019t have an ovipositor like females of other dragonfly groups so instead of \u201cinserting\u201d her eggs into the water, she jolts them from her abdomen by smacking its tip on the water\u2019s surface above submerged vegetation. Males generally \u201chover-guard\u201d while their ladies are thus engaged, preventing them from being shanghaied by rival males. Widow skimmers, Whitetails and Twelve-spots prefer shallow ponds and lakes, and very slow streams with lots of organic muck on the bottom. Submerged aquatic plants are great, but they don\u2019t care for floating duckweed leaves that coat the water. They are effective predators of mosquitoes and other aerial insects.<\/p>\n<p>Today we take to the air with three big dragonflies that belong to a group called the \u201cKing Skimmers\u201d &#8211; the genus Libellula. Four-spotted and Slaty Skimmers are also in the genus, and Chalk-fronted Corporals (Ladona julia) are sometimes included in the group. Dunkle calls the King Skimmers \u201cthe quintessential dragonflies\u201d \u2013 strong fliers, feisty, territorial, stout-bodied. Compared to the damselflies, these are giants; a few damselflies could easily sit on each of their wings. All have dark eyes; the males are pretty distinctive, but the females can be a bit confusing.<\/p>\n<p>As with most dragonflies, the information sites on the internet are logarithmically outnumbered by the zillions of photography sites that feature the work of happy dragonfly stalkers, and there is a lot of dragonfly merchandise available on the web.<\/p>\n<p>TWELVE-SPOTTED SKIMMERS (Libelula pulchella) are the largest of the three (pulchella means \u201clittle beauty\u201d but their body is about 2\u201d long and their wingspread is 3\u201d). Males, females and juveniles all have 12 dark spots on their wings, and mature males add white spots between the dark (a correspondent of the BugLady\u2019s says they look like checkered flags). They used to be called Ten-spotted Skimmers by people who were counting the light spots instead of the dark ones, but that name didn\u2019t describe the female. The wing spots of female Twelve-spots are similar to those of female Common Whitetails, and they both also have dark abdomens, but if you can get one to sit still, you\u2019ll see a \u201csolid\u201d light\/yellow stripe\u201d along each side of the Twelve-spot\u2019s abdomen.<\/p>\n<p><a href=\"https:\/\/uwm.edu\/field-station\/wp-content\/uploads\/sites\/380\/2020\/06\/12-sptted-skimmer20-4rz.jpg\"><img loading=\"lazy\" decoding=\"async\" class=\"aligncenter wp-image-11614 size-full\" src=\"https:\/\/uwm.edu\/field-station\/wp-content\/uploads\/sites\/380\/2020\/06\/12-sptted-skimmer20-4rz.jpg\" alt=\"Spotted Skimmer Dragonfly\" width=\"800\" height=\"571\" srcset=\"https:\/\/uwm.edu\/field-station\/wp-content\/uploads\/sites\/380\/2020\/06\/12-sptted-skimmer20-4rz.jpg 800w, https:\/\/uwm.edu\/field-station\/wp-content\/uploads\/sites\/380\/2020\/06\/12-sptted-skimmer20-4rz-300x214.jpg 300w, https:\/\/uwm.edu\/field-station\/wp-content\/uploads\/sites\/380\/2020\/06\/12-sptted-skimmer20-4rz-768x548.jpg 768w\" sizes=\"auto, (max-width: 800px) 100vw, 800px\" \/><\/a><\/p>\n<p>The BugLady frequently sees them perched on last year\u2019s weed stalks in her grassy field, far from the waterfront properties where they woo and win female Twelve-spots. When they\u2019re chilly, they face into the sun and raise their abdomens, to maximize exposure.<\/p>\n<p>Males characteristically fly, stop and hover, and then chase off in a different direction, and when disturbed, they will often return to the same sentinel post. They patrol a territory, chasing off dragonflies of all species and psyching out other Twelve-spot males by executing vertical loop-the-loops around them. Some of the Atlantic Coast Twelve-spots migrate in fall.<\/p>\n<p>COMMON WHITETAILS (Libellula (sometimes Plathemis) lydia) are the flashiest of the three. They\u2019re just under 2\u201d long and a little chunky-looking, and the male\u2019s spectacular pruinose, white abdomen (powder blue in younger males) contrasts with his large dark wing spots (just one on each mid-wing). Females can be distinguished from female Twelve-spots by a white\/light line along each side of the abdomen that is broken\/zig-zag, not continuous, and the edges of her dark wing spots are more jagged, too. Juvenile males\u2019 bodies are marked like females, but as they age, the pruinosity covers the abdominal markings.<\/p>\n<p><a href=\"https:\/\/uwm.edu\/field-station\/wp-content\/uploads\/sites\/380\/2020\/06\/c-whitetail-fe12-2.jpg\"><img loading=\"lazy\" decoding=\"async\" class=\"aligncenter wp-image-11615 size-full\" src=\"https:\/\/uwm.edu\/field-station\/wp-content\/uploads\/sites\/380\/2020\/06\/c-whitetail-fe12-2.jpg\" alt=\"Whitetail female Dragonfly\" width=\"800\" height=\"572\" srcset=\"https:\/\/uwm.edu\/field-station\/wp-content\/uploads\/sites\/380\/2020\/06\/c-whitetail-fe12-2.jpg 800w, https:\/\/uwm.edu\/field-station\/wp-content\/uploads\/sites\/380\/2020\/06\/c-whitetail-fe12-2-300x215.jpg 300w, https:\/\/uwm.edu\/field-station\/wp-content\/uploads\/sites\/380\/2020\/06\/c-whitetail-fe12-2-768x549.jpg 768w\" sizes=\"auto, (max-width: 800px) 100vw, 800px\" \/><\/a><\/p>\n<p><a href=\"https:\/\/uwm.edu\/field-station\/wp-content\/uploads\/sites\/380\/2020\/06\/c-whitetail-juv-male12-1rz.jpg\"><img loading=\"lazy\" decoding=\"async\" class=\"aligncenter wp-image-11616 size-full\" src=\"https:\/\/uwm.edu\/field-station\/wp-content\/uploads\/sites\/380\/2020\/06\/c-whitetail-juv-male12-1rz.jpg\" alt=\"Whitetail juvenile dragonfly\" width=\"800\" height=\"572\" srcset=\"https:\/\/uwm.edu\/field-station\/wp-content\/uploads\/sites\/380\/2020\/06\/c-whitetail-juv-male12-1rz.jpg 800w, https:\/\/uwm.edu\/field-station\/wp-content\/uploads\/sites\/380\/2020\/06\/c-whitetail-juv-male12-1rz-300x215.jpg 300w, https:\/\/uwm.edu\/field-station\/wp-content\/uploads\/sites\/380\/2020\/06\/c-whitetail-juv-male12-1rz-768x549.jpg 768w\" sizes=\"auto, (max-width: 800px) 100vw, 800px\" \/><\/a><\/p>\n<p>Dunkle says that adults are attracted to the dark of mud, where they often perch (of the three, they are most often found on the ground), and they often sun themselves on rocks. They are most uncooperative, jumpy photographic subjects. Males fiercely defend a territory about 12 yards long over open water and pond edges. Dominant males display their bright tails; submissive males lower theirs. Females lay their eggs in the shallows where there is a lot of submerged vegetation (the habitat their naiads prefer), and the naiads are tolerant of low dissolved oxygen in the water. If she wants to lay eggs on his prime real estate (up to 1000 eggs in a sitting, repeated every other day), she must mate with the owner. According to Legler in his wonderful Dragonflies of Wisconsin, a naiad that is ready to transform into an adult may crawl as far as 150\u2019 from its watery home before emerging.<\/p>\n<p><a href=\"https:\/\/uwm.edu\/field-station\/wp-content\/uploads\/sites\/380\/2020\/06\/c-whittetail-fe-oviposit15-5.jpg\"><img loading=\"lazy\" decoding=\"async\" class=\"aligncenter wp-image-11618 size-full\" src=\"https:\/\/uwm.edu\/field-station\/wp-content\/uploads\/sites\/380\/2020\/06\/c-whittetail-fe-oviposit15-5.jpg\" alt=\"Whitetail female dragonfly\" width=\"800\" height=\"800\" srcset=\"https:\/\/uwm.edu\/field-station\/wp-content\/uploads\/sites\/380\/2020\/06\/c-whittetail-fe-oviposit15-5.jpg 800w, https:\/\/uwm.edu\/field-station\/wp-content\/uploads\/sites\/380\/2020\/06\/c-whittetail-fe-oviposit15-5-300x300.jpg 300w, https:\/\/uwm.edu\/field-station\/wp-content\/uploads\/sites\/380\/2020\/06\/c-whittetail-fe-oviposit15-5-150x150.jpg 150w, https:\/\/uwm.edu\/field-station\/wp-content\/uploads\/sites\/380\/2020\/06\/c-whittetail-fe-oviposit15-5-768x768.jpg 768w\" sizes=\"auto, (max-width: 800px) 100vw, 800px\" \/><\/a><\/p>\n<p>The exquisite WIDOW SKIMMER (Libellula luctuosa) is the BugLady\u2019s favorite of the three. Widows are so named because they oviposit without the protection of their mates (one source reports that luctuosa means sorrowful and compares their wing color to mourning crepe). They perch down in the tall grasses and fly up unexpectedly as the BugLady explores, spotting her long before she spots them.<\/p>\n<p><a href=\"https:\/\/uwm.edu\/field-station\/wp-content\/uploads\/sites\/380\/2020\/06\/widow-skimmer19-4aarz.jpg\"><img loading=\"lazy\" decoding=\"async\" class=\"aligncenter wp-image-11621 size-full\" src=\"https:\/\/uwm.edu\/field-station\/wp-content\/uploads\/sites\/380\/2020\/06\/widow-skimmer19-4aarz.jpg\" alt=\"Widow Skimmer Dragonfly\" width=\"800\" height=\"571\" srcset=\"https:\/\/uwm.edu\/field-station\/wp-content\/uploads\/sites\/380\/2020\/06\/widow-skimmer19-4aarz.jpg 800w, https:\/\/uwm.edu\/field-station\/wp-content\/uploads\/sites\/380\/2020\/06\/widow-skimmer19-4aarz-300x214.jpg 300w, https:\/\/uwm.edu\/field-station\/wp-content\/uploads\/sites\/380\/2020\/06\/widow-skimmer19-4aarz-768x548.jpg 768w\" sizes=\"auto, (max-width: 800px) 100vw, 800px\" \/><\/a><\/p>\n<p>They\u2019re just a bit bigger than Common Whitetails but, to the BugLady\u2019s eye, they look sleeker. In both sexes, the base of the wing is brown (in the Common Whitetail, the dark patch is toward the middle). Males have big bluish-white spots next to the brown, fading to clear-ish patches at the wing tips and may have a blue tinge\/pruinosity on the abdomen. The center of the female\u2019s abdomen is a black stripe, bordered on each side by broad, gold stripes that merge at the thorax like an inverted V. Juveniles start out looking like females, and the juvenile male&#8217;s abdomen gradually changes color.<\/p>\n<p><a href=\"https:\/\/uwm.edu\/field-station\/wp-content\/uploads\/sites\/380\/2020\/06\/widow-skimmer-juv-male07-13rz.jpg\"><img loading=\"lazy\" decoding=\"async\" class=\"aligncenter wp-image-11620 size-full\" src=\"https:\/\/uwm.edu\/field-station\/wp-content\/uploads\/sites\/380\/2020\/06\/widow-skimmer-juv-male07-13rz.jpg\" alt=\"Widow Skimmer Dragonfly\" width=\"800\" height=\"571\" srcset=\"https:\/\/uwm.edu\/field-station\/wp-content\/uploads\/sites\/380\/2020\/06\/widow-skimmer-juv-male07-13rz.jpg 800w, https:\/\/uwm.edu\/field-station\/wp-content\/uploads\/sites\/380\/2020\/06\/widow-skimmer-juv-male07-13rz-300x214.jpg 300w, https:\/\/uwm.edu\/field-station\/wp-content\/uploads\/sites\/380\/2020\/06\/widow-skimmer-juv-male07-13rz-768x548.jpg 768w\" sizes=\"auto, (max-width: 800px) 100vw, 800px\" \/><\/a><\/p>\n<p>When there aren\u2019t many Widows around, males each defend their own territories (up to 250 square yards), but the territories move daily. Defense of their home turf can be a contact sport. With overcrowding, a dominant male emerges and he gets all the ladies. In dense populations, the male will guard his female as she lays eggs; if she gets raided by an intruder, he will discard his rival\u2019s reproductive material and replace it with his own.<\/p>\n<p><a href=\"https:\/\/uwm.edu\/field-station\/wp-content\/uploads\/sites\/380\/2020\/06\/widow-skimmer-fe16-4.jpg\"><img loading=\"lazy\" decoding=\"async\" class=\"aligncenter wp-image-11619 size-full\" src=\"https:\/\/uwm.edu\/field-station\/wp-content\/uploads\/sites\/380\/2020\/06\/widow-skimmer-fe16-4.jpg\" alt=\"Widow Skimmer Dragonfly\" width=\"800\" height=\"572\" srcset=\"https:\/\/uwm.edu\/field-station\/wp-content\/uploads\/sites\/380\/2020\/06\/widow-skimmer-fe16-4.jpg 800w, https:\/\/uwm.edu\/field-station\/wp-content\/uploads\/sites\/380\/2020\/06\/widow-skimmer-fe16-4-300x215.jpg 300w, https:\/\/uwm.edu\/field-station\/wp-content\/uploads\/sites\/380\/2020\/06\/widow-skimmer-fe16-4-768x549.jpg 768w\" sizes=\"auto, (max-width: 800px) 100vw, 800px\" \/><\/a><\/p>\n<p>Besides the Legler and Dunkle books, the BugLady recommends Dragonflies of the North Woods by Kurt Mead, Dragonflies and Damselflies of the East, by Paulson, <em>and the Stokes Beginner\u2019s Guide to Dragonflies.<\/em><\/p>\n<p><em>The BugLady<\/em><\/p>\n","protected":false},"excerpt":{"rendered":"<p>Howdy, BugFans, This episode originally appeared in 2011 under the title of \u201cConfusing Summer Dragonflies.\u201d They are confusing in that they all have dark patches on their wings \u2013 interspersed with white patches in mature males but not in juvenile &hellip;<\/p>\n","protected":false},"author":19040,"featured_media":11614,"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-11610","post","type-post","status-publish","format-standard","has-post-thumbnail","hentry","category-bug-of-the-week"],"yoast_head":"<!-- This site is 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content=\"https:\/\/uwm.edu\/field-station\/bug-of-the-week\/closed-for-june-spectacular-summer-dragonflies\/\" \/>\n<meta property=\"og:site_name\" content=\"Field Station\" \/>\n<meta property=\"article:published_time\" content=\"2020-06-24T19:16:22+00:00\" \/>\n<meta property=\"article:modified_time\" content=\"2020-06-24T19:17:45+00:00\" \/>\n<meta property=\"og:image\" content=\"https:\/\/uwm.edu\/field-station\/wp-content\/uploads\/sites\/380\/2020\/06\/12-sptted-skimmer20-4rz.jpg\" \/>\n\t<meta property=\"og:image:width\" content=\"800\" \/>\n\t<meta property=\"og:image:height\" content=\"571\" \/>\n\t<meta property=\"og:image:type\" content=\"image\/jpeg\" \/>\n<meta name=\"author\" content=\"Cheryl L Totty\" \/>\n<meta name=\"twitter:card\" content=\"summary_large_image\" \/>\n<meta name=\"twitter:label1\" content=\"Written by\" \/>\n\t<meta name=\"twitter:data1\" content=\"Cheryl L Totty\" \/>\n\t<meta name=\"twitter:label2\" content=\"Est. reading time\" \/>\n\t<meta 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