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The horse flies and deer flies of Canada and Alaska (Diptera: Tabanidae)
By Teskey H.J.
The insects and arachnids of Canada, Pt. 16. Ottawa: Agriculture Canada. 381 pp., 1990
Cite: 487880 with citation markup [cite:487880]


Teskey Publication
This is an outstanding work with excellent keys, descriptions and illustrations. Includes virtually all the taxa likely to occur or be encountered in Canada and the northern half of the U.S.

 
thanks, John
far from being an expert, that was exactly my impression -- imagine my surprise seeing this great [and free!] source nowhere among BG ref. entries...
i've added it to the fam. page immediately

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