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Entomology (Study of Bugs)/Flying biting insect Southeastern Pennsylvania

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Question
Black with white stripes
Black with white strip  

Mystery bug
Mystery bug  
Could you help me identify these bugs and give ways to best minimize their nuisance. Thank you

Answer
Dear Dave - The mosquito does look more like Aedes albopictus (Asian tiger mosquito) than any other mosquito species likely to be encountered in your area. As you likely already know, these are container breeders that will exploit just about any water container, natural (tree holes, etc.) or man-made (discarded tires, etc.) that will hold water for 10 days or so without going dry. Therefore, the best thing you can do is keep your premises free of such potential larval sites, and encourage your neighbors to do the same.
  The other insect appears to be Delphinia picta, a fly in the family Ulidiidae. It is not considered a serious pest; their larvae feed on decomposing vegetable matter, including rotting fruit laying on the ground. See http://tinyurl.com/cjmzb8b for more detailed information on this species.

Hope this helps,
Saugy

Entomology (Study of Bugs)

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Ed Saugstad

Expertise

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.

Experience

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.

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

Publications
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.

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

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