Eurycotis

Eurycotis is a genus of cockroaches. Cockroaches of this genus often have the capability to secrete an unpleasant smell when threatened. Both sexes have a large gland in the rear part of the abdomen capable of secreting a milky, acidic fluid as either an oozing liquid, or up to a three foot spray. ...
Found on http://en.wikipedia.org/wiki/Eurycotis

Eurycotis

(from the article `orthopteran`) ...glands that produce irritating fluids or repugnant odours. The disagreeable smell of some cockroaches, especially when disturbed, is well known. ...
Found on http://www.britannica.com/eb/a-z/e/54
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