![\"Diving](\"https:\/\/uwm.edu\/field-station\/wp-content\/uploads\/sites\/380\/2024\/04\/beetle-dytiscid-hydaticus-aruspex22-1.webp\")
<\/a><\/figure>\n\n\n\nThe BugLady found this PREDACEOUS DIVING BEETLE (Hydacticus aruspex<\/em>) (probably) in shallow water that was so plant-choked that the beetle had trouble submerging.\u00a0Diving beetles are competent swimmers, tucking their two front pairs of legs close to their body and stroking with powerful back legs.\u00a0When they submerge, they carry a film of air with them to breathe, stored under the hard, outer wing covers (elytra). They can fly, too, though they mostly take to the air at night.<\/p>\n\n\n\n As both larvae and adults, Predaceous diving beetles are aquatic and carnivorous, dining on fellow aquatic invertebrates.\u00a0Larvae (called water tigers) grab their meals with curved mouthparts and inject digestive juices that soften the innards, making them easy to sip out (generic water tiger<\/a>).\u00a0They eat lots of mosquito larvae. Adults grab their prey and tear pieces off. Not for the faint of heart.\u00a0 \u00a0<\/p>\n\n\n\n Hydacticus aruspex<\/em>\u00a0(no common name) is one of five genus members in North America and is found across the continent.\u00a0It comes in both a striped and a non-striped<\/a> form. It overwinters as an adult, under the ice, and romance blossoms in spring. More information about Predaceous diving beetles<\/a>.\u00a0<\/p>\n\n\n\n These spectacular OBLIQUE-WINGED KATYDIDS (probably) were climbing around on Arrow Arum in a wetland that the BugLady frequents.\u00a0Katydids are famous singers whose ventriloquistic calls may be heard day and night (though older ears may strain to hear them \u2013 test your hearing<\/a>). They \u201csing\u201d via \u201cstridulation\u201d \u2013 friction \u2013 in their case, by rubbing\u00a0the rigid edge of one forewing against a comb-like \u201cfile\u201d on the other (the soft, second set of wings is only for flying, and they do that well).\u00a0They hear with slit-like tympana on their front legs.\u00a0Most Katydids are vegetarians, but a few species are predaceous.<\/p>\n\n\n\n Oblong-winged Katydids (Amblycorypha oblongifolia<\/em>) are \u201cFalse katydids\u201d (here\u2019s a True katydid<\/a>) in the Round-headed katydid genus. They are found in woods, shrubs, and edges throughout the eastern US, often in \u201cdamp-lands,\u201d often on brambles, roses, and goldenrods.\u00a0The dark, mottled triangle on the top of the male\u2019s thorax is called the \u201cstridulatory field\u201d \u2013 a rough area that is rubbed to produce sound.\u00a0Oblong-winged katydids have a large stridulatory field.\u00a0<\/p>\n\n\n\n Katydids, both in color and in texture, are remarkably camouflaged \u2013 except when they\u2019re not. Here\u2019s an awesome color wheel of katydids<\/a>.\u00a0<\/p>\n\n\n\n More information about the large katydids (including the origin of their name).<\/a><\/p>\n\n\n\n The BugLady came across this cute little MOTH FLY (Clytocerus americanus<\/em>) (probably) on a day that she couldn\u2019t take an in-focus shot on a bet!\u00a0Fortunately,\u00a0bugguide.net<\/a>\u00a0contributors did better [ one<\/a> , two<\/a> ]. Despite their name, Moth flies are moths, not flies or weird hybrids. They are tiny (maybe 1\/8\u201d) and hairy, and are weak fliers, and until she saw this one, the only Moth flies she had ever seen were indoors, in the bathroom (where they earn another of their names – \u201cdrain flies\u201d).\u00a0Species that live outside are, like this one was, often found near wetlands.\u00a0<\/p>\n\n\n\n There are only one or two species in the genus\u00a0Clytocerus<\/em>\u00a0in North America, and they have strongly-patterned wings and very hairy antennae.\u00a0Not much is known about their habits.\u00a0According to Wikipedia, adult\u00a0Clytocerus americanus<\/em>\u00a0feed on \u201cfungal mycelia and various organisms which inhabit wet to moist environments. Larvae are assumed to be detritivores<\/em>.\u201d<\/p>\n\n\n\n Find out more about moth flies here.<\/a>\u00a0<\/p>\n\n\n\n MASON WASP \u2013 This is what happens when the BugLady buys garden stakes!\u00a0After various small, solitary wasps populate the empty interiors with eggs, the BugLady can\u2019t possibly stick them into the ground!\u00a0<\/p>\n\n\n\n As their name suggests, female Mason wasps use mud to construct chambers in preexisting holes to house both their eggs and the cache of small invertebrates that their their eventual larvae will eat. <\/p>\n\n\n\n The Canadian Mason Wasp (Symmorphus canadensis<\/em>) suspends an egg from the chamber roof or wall by a thread and then adds 20 or more moth or leaf mining beetle larvae before partitioning it off with a wall of mud and working on the next cell<\/a>.\u00a0She leaves a \u201cvestibule\u201d at the end of the tunnel\/plant stake between the final chamber and the door plug.\u00a0<\/p>\n\n\n\n Heather Holm, in her sensational\u00a0Wasps: Their Biology, Diversity, and Role and Beneficial Insects and Pollinators of Native Plants, discusses the hunting strategy of genus members: \u201cSymmorphus wasps hunt leaf beetle larvae (Chrysomela); these beetles have glands in their abdominal segments and thorax that emit pungent defensive compounds.\u00a0These compounds are derived from the plants that the larvae consume… In addition to using visual cues to find their prey, it is likely that Symmorphus wasps use olfactory means to find the beetle larvae.\u00a0Symmorphus males have been observed lunging at Chrysomela larvae, mistaking the larvae for adult females\u00a0<\/em>[female mason wasps]\u00a0that, after capturing and handling prey, smell of the offensive compounds<\/em>.<\/p>\n\n\n\n Here are two previous BOTWs about mason wasps, each a different genus than the Canadian Mason wasp [ one<\/a> , two<\/a> ].<\/p>\n\n\n\n The BugLady<\/em><\/p>\n\n\n Note: Most links leave to external sites. Howdy, BugFans, Bugs without bios \u2013 those humble (but worthy) bugs about whom little information is readily available.\u00a0Today\u2019s bugs check those boxes as species, but they have something in common – their lifestyles …<\/p>\n","protected":false},"author":32664,"featured_media":14761,"comment_status":"closed","ping_status":"closed","sticky":false,"template":"","format":"standard","meta":{"_acf_changed":false,"footnotes":"","uwm_wg_additional_authors":[]},"categories":[8],"tags":[607,793,795,789,614,275,609,794,792,791,790,788,91],"class_list":["post-14727","post","type-post","status-publish","format-standard","has-post-thumbnail","hentry","category-bug-of-the-week","tag-bugs","tag-canadian-mason-wasp","tag-chrysomela-larvae","tag-diving-beetles","tag-insects","tag-katydids","tag-larvae","tag-leaf-beetle-larvae","tag-mason-wasp","tag-moth-fly","tag-oblique-winged-katydids","tag-predaceous-diving-beetle","tag-wasps"],"yoast_head":"\n<\/a><\/figure>\n\n\n\n<\/a><\/figure>\n\n\n\n<\/a><\/figure>\n\n\n\n<\/a><\/figure>\n\n\n\n<\/a><\/figure>\n\n\n\n