{"id":5813,"date":"2010-08-02T11:41:13","date_gmt":"2010-08-02T16:41:13","guid":{"rendered":"https:\/\/uwm.edu\/field-station\/?p=5813"},"modified":"2017-06-02T16:30:46","modified_gmt":"2017-06-02T21:30:46","slug":"hairy-rove-beetle","status":"publish","type":"post","link":"https:\/\/uwm.edu\/field-station\/bug-of-the-week\/hairy-rove-beetle\/","title":{"rendered":"Hairy Rove Beetle (Family Staphylinidae)"},"content":{"rendered":"

Howdy, BugFans,<\/p>\n

The BugLady was faced with an entomological conundrum recently. One the one hand, the beetle in front of her was marked similarly to a burying beetle (of previous BOTW fame). On the other hand, it was longer and slimmer than your average burying beetle and, more importantly, it could easily outrun the BugLady, who can generally move faster than a burying beetle. A little research on bugguide.net<\/a> revealed it to be a Hairy Rove Beetle (HRB), a beetle whose habitat smells roughly the same as a Burying beetle\u2019s habitat. Although the two may hang out in or under the same corpses, the burying beetle attends to the dead, while a rove beetle\u2019s business is (mainly) with the living.<\/p>\n

Hairy Rove Beetle<\/h3>\n

Hairy Rove Beetles are in the rove beetle family Staphylinidae, a family that has graced the earth for upwards of 200 million years. Rove beetles haven\u2019t wasted those 200,000,000 years—they comprise the second largest beetle family (after the weevil family) with 46,000+ species (a hotly-contested number). There are just under 3,000 species in North America. With 400 new species being described and classified annually, some suggest that there are a bundle of yet-to-be-discovered rove beetles, mostly tropical. <\/p>\n

[metaslider id=5815]<\/p>\n

References describe their mouthparts with phrases like \u201cstout mandibles\u201d and \u201cneedle-like\u201d and their bite as \u201cpainful.\u201d Their antennae lack the clubs that adorn the ends of a burying beetle\u2019s antennae. Where most beetles\u2019 elytra<\/em> (the hard wing covers that protect their membranous flying wings) are about the same length as their abdomens, rove beetles have dramatically-shortened elytra (burying beetles\u2019 elytra are somewhat-shortened). Most rove beetles have standard flying wings that are simply tucked up into a smaller space. The HRB (Creophilus maxillosus<\/em>) maxes out at around an inch, but most rove beetles are much smaller. Their short elytra allow them a lot of flexibility, and they sometimes run around with abdomens raised, resembling earwigs.<\/p>\n

HRBs, aka Gray and black rove beetles, can be found during temperate months in woods east of the Mississippi and also across The Pond. There they mostly hide out under stuff—dead bark, rocks, leaf litter, dung and carrion. Most rove beetles are carnivores or scavengers as both adults and larvae, but a few species eat mushrooms and plant materials. HRBs eat carrion and also (as one source puts it) the \u201cnutrient-packed\u201d maggots and other larvae that inhabit carcasses.<\/p>\n

They come equipped with defenses at both ends. HRBs produce a cocktail of chemicals, most with names longer than the HRB itself, that is dispensed in a fine mist both irritates and offends. The chemicals are known repellants of ants, which are common rove beetle enemies (though some rove beetles have symbiotic relationships with ants and even live in ant hills).<\/p>\n

HRBs in the News:<\/p>\n