Red Admiral butterflies hold a special place in the BugLady\u2019s heart (along with the \u201cickybug\u201d of recent BOTW fame); Red Admirals were an important \u201centry level\u201d bug during the BugLady\u2019s childhood (more about that in a sec). This is a complete overhaul of a way-too-short episode that appeared in October of 2008.<\/p>\n\n\n\n
Red Admirals (Vanessa atalanta<\/em>) belong to the largest butterfly family, the Nymphalidae or Brush-footed butterflies. Their antennae are very \u201cknobbed,\u201d and their two front legs are covered with bristles and reduced in size (so they have, effectively, only two pairs of walking legs). There are two broods of RAs per summer in most of the north, and there are two \u201cforms\u201d\u2014a slightly smaller and less flashy winter form and a larger, more intensely-colored summer form.<\/p>\n\n\n\n They are strong, fast, somewhat erratic flyers with a wingspread of two inches, plus-or-minus, and distinctly-colored upper wing surfaces, but an RA that\u2019s sitting with its wings folded is pretty well camouflaged. At a quick glance, the only butterflies that might be mistaken for a Red Admiral are (possibly) the Painted Lady, and the Milbert\u2019s Tortoiseshell, a butterfly noted for population swings, but one that has been absent from the BugLady\u2019s vistas for so long that she doesn\u2019t even have a digital picture of one<\/a>.<\/p>\n\n\n\n RAs have population eruptions and they wander (and nobody really knows why), and so, to varying degrees, do the other Vanessas\u2014the Painted Lady, American Lady, and the West Coast Lady. The Painted Lady (of previous BOTW fame) is said to be the most widely distributed butterfly globally and is found in temperate regions of four continents plus Central America (and scientists do think they know why Painted Lady\u2019s roam). The American Lady is considered \u201csomewhat migratory,\u201d and as its name suggests, the West Coast Lady is found from the Pacific through eastern Colorado.<\/p>\n\n\n\n The RA\u2019s range is only a little smaller than the Painted Lady\u2019s, and within that range it\u2019s found in many habitats\u2014suburbs, parks, gardens, wooded edges and trails, around wetlands, bottomlands, damp fields, and ditches\u2014anywhere it can be close to the various species of nettles that are its caterpillar\u2019s food plants. Most sources restrict the caterpillars to nettles, but a few add to the list thistles, willows, and\/or members of the plant family Cannabaceae (yes, that plant family), a family that, the BugLady was surprised to discover, is primarily made up of hackberries and hops. Adults are seen nectaring on flowers, but they prefer non-floral calories from fermenting fruit, animal scat, and sap oozes on tree trunks.<\/p>\n\n\n\n Males are said to defend territories in clearings and semi-sunny edges in the late afternoon and to scout for females from perches that they revisit. The subject of whether the males are truly territorial or simply chase everything until they determine its species and gender is somewhat up in the air (butterfly eyesight\u2014not 20:20). Intruders get chased upwards in a spiral and out over the treetops.<\/p>\n\n\n\n Females fly slowly and purposefully in search of host plants. Butterflies scratch a leaf\u2019s surface with raspy spots at the bottom of their tarsi and then sample (smell\/sense\/taste) the chemistry. If the RA recognizes it, she will lay an egg on the top surface of a host plant leaf. A caterpillar<\/a> folds a leaf around itself and shelters inside, leaving the leaf to feed or to form a larger tent. The larval stage lasts about a month; the caterpillar makes a pupal case<\/a> by sewing several leaves together and hanging inside it, head down (pictures of all stages are at http:\/\/entnemdept.ufl.edu\/creatures\/bfly\/red_admiral.htm<\/a>).<\/p>\n\n\n\n Wandering RAs started showing up in numbers in the second week in May (along with some Painted Ladies), but, well, there\u2019s some question about that, too. In the more southerly parts of their range, both adults and pupae hibernate. Ebner, in Butterflies of Wisconsin<\/em> (1970) says that,\u201d a few individuals may overwinter as adults in Wisconsin, emerging in the balmy days of late April and May.\u201d RAs are known to overwinter as adults as far north as New York. Whether they are newly-awakened or newly-arrived, our April-May RAs initiate the two broods. Brood #1, the larger, showier summer brood will be coming out by the start of July. They produce the winter form, seen from late August through the first frosts. From what the BugLady reads, the winter crew is non-reproductive (like the Gen. 5 Monarch butterflies) and they pack away fat reserves that allow them to migrate or to hibernate. Whatever their winter strategy, they become reproductively mature the following spring.<\/p>\n\n\n\n This was the Bug Lady\u2019s natal butterfly \u2013 her favorite insect as a kid. If she stood for a while on the lawn, a red admiral would fly over and sit on her out-stretched hand and sometimes eat a little salty sweat as she admired it.<\/p>\n\n\n\n As always, the BugLady recommends Door 3, repentance.<\/p>\n\n\n\n The BugLady<\/em><\/p>\n\n\n\n And, on a dragonfly note\u2014if you see a milky strand at the water’s surface in a wetland near you, and if you’re lucky, it could be the egg strand of a baskettail dragonfly.<\/p>\n","protected":false},"excerpt":{"rendered":" Red Admiral butterflies<\/strong> (Vanessa atalanta<\/em>) belong to the largest butterfly family, the Nymphalidae or Brush-footed butterflies. There are two broods of RAs per summer in most of the north, and there are two \u201cforms\u201d—a slightly smaller and less flashy winter form and a larger, more intensely-colored summer form.<\/p>\n","protected":false},"author":845,"featured_media":0,"comment_status":"closed","ping_status":"closed","sticky":false,"template":"","format":"standard","meta":{"_acf_changed":false,"footnotes":"","uwm_wg_additional_authors":[]},"categories":[8],"tags":[41],"class_list":["post-1828","post","type-post","status-publish","format-standard","hentry","category-bug-of-the-week","tag-butterflies"],"yoast_head":"\n