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Entomology (Study of Bugs)/Identification of an insect



I have a question about an insect I found in Chatham, Ontario in the early evening of August 16 - we found this little guy crawling around the lawnmower while hosing down the machine.
It has a really interesting marking on its back that captured our attention, and it was moving around very quickly.
We are curious about it being a tick, although it only has 6 legs and is rather large - approximately 1 cm from front to back.

Dear David - This is a nymph of a stink bug (Hemiptera/Heteroptera: Pentatomidae. It appears to be that of a spined soldier bug, Podisus maculiventris, a predatory species that can be a valuable asset in the garden, see and for images and more detailed information.

Hope this helps,

Entomology (Study of Bugs)

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Ed Saugstad


Will accept most questions in general entomology, including those related to medical entomology, taxonomy, ecology, arthropod surveillance, and pest management. If you are requesting a 'mystery bug' identification, PLEASE either attach an image to your question, or post an image on a web page (such as Flickr) so that I can look at it, as verbal descriptions frequently are insufficient for a definitive identification.


21 years in the U.S. Army as a medical entomologist; duties varied from surveillance of pest populations (including mosquitoes, cockroaches, ticks, and stored products pests) to conducting research on mosquito-virus ecological relationships and mosquito faunal studies. Ten years as a civilian analyst for the Department of Defense, primarily on distribution of vector-borne diseases worldwide. Limited experience on surveillance of agricultural insects in North Dakota and Indiana.

Entomological Society of America, West Virginia Entomological Society, Society for Vector Ecology, National Speleological Society, West Virginia Association for Cave Studies.

American Journal of Public Health, Contributions of the American Entomological Institute, Japanese Journal of Sanitary Zoology, Journal of Economic Entomology, Mosquito News, and Mosquito Systematics.

B.S. in entomology from North Dakota State University in 1963, M.S. in entomology from Purdue University in 1967.

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