THE LEPTURINI OF AMERICA NORTH OF MEXICO 
Part I 
INTRODUCTION 
This paper presents the results of a study of the tribe Lepturini of the 
family Cerambycidae in America, north of Mexico. It attempts a revision 
of the genera and species, with keys, illustrations, and descriptions sufficient 
to enable the species to be determined satisfactorily, and an arrangement 
based upon their strongest affinities. 
This group of beetles is composed almost entirely of wood-boring 
species, whose larvae excavate tunnels in the trunks, limbs, or stumps of 
both deciduous and coniferous trees. Little is known about the habits of 
many of the species; but it is believed that most of them breed in dead 
wood; some are known to live in decaying wood, and a few attack living 
trees. . Many of the species are abundant in our Canadian forests and it 
is desirable that more exact information should be obtained concerning 
their biology and their precise relationships to the trees in which they 
breed. This study is presented in the hope that it may assist in the deter- 
mination of the genera and species of this rather difficult group and also 
thereby influence a closer study of their bionomics. 
The large amount of material in the Canadian National collection, 
including an extensive collection of European species, has formed the basis 
for this study; but, in addition, the writers have studied the collections in 
the Q.S. National Museum and the Casey collection at Washington; the 
Leconte collection at Cambridge, Mass.; the Horn collection at the 
Philadelphia Academy of Sciences; and that of Mr. J. N. Knull at Harris- 
burg, Pa. They have examined the collections of Mr. H. W. Wenzel and 
Mr. Frank Mason of Philadelphia and, through the kindness of many 
correspondents, have had before them many other collections and examples 
of rare species. 
The number of specimens examined, as recorded under each species, 
usually refers to the material in the Canadian National collection, and to 
the collections sent in for special study. 
No attempt has been made to record all the locality records given in 
literature. In so many cases the records were obviously taken from incor- 
rect determinations that it seemed more useful to state the general distri- 
bution from the most reliable information available at the time. 
The writers wish to express their grateful appreciation for the help 
they have received so generously from many entomologists. Particularly 
helpful has been the assistance of Dr. S. A. Rohwer and Mr. W. S. Fisher, 
of the U.S. National Museum, Washington, D.C.; Mr. J. N. Knull and 
Mr. A. B. Champlain, Harrisburg, Pa.; Mr. Nathan Banks, Agassiz 
Museum, Cambridge, Mass.; Mr. H. C. Fall, Tyngsboro, Mass.; Mr. 
H. P. Boding, Mobile, Ala.; Mr. C. A. Frost, S. Framingham, Mass,; Mr. 
Warren Knaus, McPherson, Kan.; Mr. Charles Liebeck, Philadelphia; 
Mr. L. L. Buchanan, Biological Survey, Washington, D.C.; Dr. E. C. 
