TABANIDAE OF NEW HAMPSHIRE 
By R. L. Blickle' 
University of New Hampshire 
Many species of Tabanidae are of economic importance 
in the state as pests of man and of livestock. In general, 
the species of the genus Tahamis are more important as 
regards livestock, while those of the genus Chrysops are 
irritating to man. The following horseflies, listed in order 
of their appearance during the summer, are of economic 
importance; Tabanus lasiopthalmics, T. typhus, T. lineola, 
T. trispilus, T. aurilimhus, and T. sidcifrons. Along the 
coast T. nigrovittatus in mid-summer and T. actaeon in 
late summer have been numerous enough at times to be 
important. Other species present at the same time as those 
mentioned above, though not numerous, contribute to the 
losses attributed to horseflies. The deerflies, although very 
numerous, do not irritate the cattle or cause as much loss 
of blood as do the larger horseflies. The deerflies are im- 
portant as pests of man in recreational areas and in tracts 
where lumbering operations are being conducted. Those 
species causing discomfort to man because of their abund- 
ance are: Chrysops initis, C. sordida, C. carbonaria, and 
C. excitans in early summer. C. lateralis, C. striata, C. 
univittata, and C. vittata are important along the seashore 
and causes more discomfort to many than any other species 
of Tabanidae. 
The list of species and subspecies is based mainly on 
material in the University of New Hampshire collection. 
Incorporated in the collection are the specimens donated 
by the late S. A. Shaw. Mr. Shaw was an active collector 
of insects, especially Diptera, from 1890 until 1934. Other 
collectors contributing to the collection have been: R. L. 
Blickle, J. G. Conklin, W. F. Fiske, A. G. Humes, P. R. 
Lowry, W. J. Morse, H. W. Smith and C. M. Weed. Ad- 
ditional records were obtained from the Museum of Com- 
T^iblished with the permission of the Director as Scientific Contribu- 
tion Xo. 156 of the New Hampshire Agricultural Experiment Station. 
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