{"id":6490,"date":"2008-05-14T00:00:44","date_gmt":"2008-05-14T05:00:44","guid":{"rendered":"https:\/\/uwm.edu\/field-station\/?p=6490"},"modified":"2017-06-25T11:42:05","modified_gmt":"2017-06-25T16:42:05","slug":"ichneumon-wasp","status":"publish","type":"post","link":"https:\/\/uwm.edu\/field-station\/bug-of-the-week\/ichneumon-wasp\/","title":{"rendered":"Ichneumon Wasp (Family Ichneumonidae)"},"content":{"rendered":"

Hi, BugFans,<\/p>\n

First off, this is not Everywasp, the yellow and black gal most people visualize when they hear the word. In fact, there are blue-black mud daubers, metallic green cuckoo wasps, and orangey ichneumons. Wasps belong to the order Hymenoptera (membrane wings), which includes the ants, bees and wasps and a few hangers-on like sawflies and horntails. Some species are social, living communally with strict caste systems, but most are not. Hymenopterans have two membranous wings (royal ants are the only ones that get to fly, just once in their lives).<\/p>\n

\"ichneumon-1\"<\/a><\/p>\n

They tend to have long, jointed antennae and a narrow \u201cwaist\u201d connecting the thorax and abdomen. Stingers are modified ovipositers—workers don\u2019t mate, but many species do not sting. Hymenopterans have a \u201ccomplete metamorphosis,\u201d which means that eggs hatch into larvae that rest as pupae and emerge as adults that do not resemble the preceding stages and may occupy a different habitat, have different kinds of mouthparts and eat a different diet than the larva did. Hymenopterans are considered the \u201cmost evolved\u201d insects.<\/p>\n

Ichneumon Wasps<\/h3>\n

Ichneumon wasps are members of a large and very confusing family with over 3,000 species north of Mexico. It belongs to the subfamily Ophionidae. Ichneumons frequently have a white or yellow band on their antennae and they may be \u201ctwitchy.\u201d Their long, often-curved abdomen may be \u201cflattened.\u201d Some ichneumons have impressive-looking \u201cstingers,\u201d which are actually ovipositers<\/em> (egg-depositers to you classical language scholars.). One author reports getting a healthy sting while escorting an Ophion ichneumon<\/em> from the house manually.<\/p>\n

The adults drink nectar and water. Ichneumons lay their eggs on moth or butterfly caterpillars or in the larvae of their distant relatives, the horntails and sawflies. Spiders and other insects may also be hosts. Their parasitic larvae feed internally or externally on their hosts and ultimately emerge as adults from the host\u2019s pupa, (which sounds to the Bug Lady like a magician\u2019s slight-of-hand). The host does not survive. Ichneumons are considered important control of pest insects.<\/p>\n

Giant Ichneumon Wasp<\/h3>\n

One of the Bug Lady\u2019s favorite insects is the Giant Ichneumon Wasp (genus Megarhyssa<\/em>), a sizable wasp with a sizable (3+ inches) ovipositor that she curls up over her body at rest. A male Megarhyssa<\/em>, about the size of a damselfly, flew into the BugLady\u2019s car one day and stayed long enough for a portrait. The female lays her eggs in the tunnels made by horntail larvae in the rotten wood deep in a dead tree. She finds the larvae by landing on the tree trunk and laying her antennae against the bark. When she senses the movement of a horntail within, she precision-bores into the chamber, using the sharp tip of the ovipositor, until she can lay an egg on the horntail larva. Her larva lives as an external parasite on the horntail; the full-grown ichneumon larva abandons its dying host and pupates in the tunnel; the adult wasp has to chew its way out.<\/p>\n

[metaslider id=6502]<\/p>\n

And, Ichneumon<\/em> comes from the Greek word for hunter or tracker.<\/p>\n

Wowsers!<\/p>\n

 
\nThe Bug Lady<\/em><\/p>\n","protected":false},"excerpt":{"rendered":"

Ichneumon wasps<\/strong> are members of a large and very confusing family with over 3,000 species north of Mexico. Ichneumons frequently have a white or yellow band on their antennae and they may be \u201ctwitchy.\u201d Some ichneumons have impressive-looking \u201cstingers,\u201d which are actually ovipositers. Ichneumons lay their eggs on moth or butterfly caterpillars or in the larvae of their distant relatives. The adults drink nectar and water. <\/p>\n","protected":false},"author":3666,"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":[91],"class_list":["post-6490","post","type-post","status-publish","format-standard","hentry","category-bug-of-the-week","tag-wasps"],"yoast_head":"\nField 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\/ichneumon-wasp\/\" \/>\n<meta property=\"og:locale\" content=\"en_US\" \/>\n<meta property=\"og:type\" content=\"article\" \/>\n<meta property=\"og:title\" content=\"Ichneumon Wasp (Family Ichneumonidae)\" \/>\n<meta property=\"og:description\" content=\"Ichneumon wasps are members of a large and very confusing family with over 3,000 species north of Mexico. 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