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Insect and Spider Identification: Wheel Bug?

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Forum: Insect and Spider IdentificationReplies: 6, Views: 35
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fozzi
Blairstown, NJ

October 15, 2012
7:49 AM

Post #9305765

I'm pretty sure this is a wheel bug, but can anyone tell me what the red protuberance is? As I was photographing him , I tried moving him with a leaf to get a better shot, and the insect moved the red things in and out.

Thumbnail by fozzi
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Flapdoodle
Minot, ND

October 15, 2012
11:56 AM

Post #9306108

Yes, this most definitely is a wheel bug (Arilus cristatus).

themoonhowl

themoonhowl
Prairieville, LA
(Zone 9a)

October 15, 2012
2:33 PM

Post #9306286

I think the protuberances are scent sacs...

http://bugguide.net/node/view/701135/bgimage
fozzi
Blairstown, NJ

October 15, 2012
3:14 PM

Post #9306321

Thank you both for your help.

themoonhowl

themoonhowl
Prairieville, LA
(Zone 9a)

October 15, 2012
3:22 PM

Post #9306326

You are most welcome
Flapdoodle
Minot, ND

October 16, 2012
12:09 AM

Post #9306686

The red protuberances are mites, either phoretic ('hitchhiking) or parasitic; not scent glands.

themoonhowl

themoonhowl
Prairieville, LA
(Zone 9a)

October 16, 2012
8:00 AM

Post #9306941

Sorry, Id'ing as "scent sacs" came from an article...and the same info is included in a number of other articles also.

"Scent sacs: Garman (1916) and Froeschner (1944) noted that wheel bugs, when captured, extrude (with little provocation) a pair of bright, orange-red scent sacs near the apex of the venter. These sacs give off a pungent scent. "

http://livingwithinsects.wordpress.com/2012/07/22/wheel-bug-scent-glands/

http://www.freshfromflorida.com/pi/enpp/ento/entcirc/ent143.pdf

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