AUTHORSHIP 
This publication is the work of various specialists in their individual 
fields of entomological research. Their responsibilities were as fol- 
lows: F. C. Craighead, introductory and control sections, Coleoptera 
(in part), and general supervision of the entire publication; M. W. 
Blackman, Scolytidae and Platypodidae; J. V. Schaffner, Jr., Hymen- 
optera (in part) and Lepidoptera; P. B. Dowden and William Middle- 
ton, Hymenoptera; J. N. Knull, Buprestidae (in part); W. L. Baker, 
P.W. Oman, and T. J. Parr, sucking insects; R. A. St. George, Coleop- 
tera (in part); H. J. MacAloney, Coleoptera (in part) ; T. E. Snyder, 
termites; R. T. Webber, Diptera; N. D. Wygant, Orthoptera; L. E. 
Yeager, Lamellicornia; S. F. Potts, spray formulas; and R. C. Brown, 
beneficial insects. 
J. V. Schaffner, Jr., also rendered valuable assistance by his critical 
review of the entire compilation. 
II 
