AUTHOR 8 ABSTRACT OF THIS PAPER ISSUED BY 

 THE BIBLIOGRAPHIC SERVICE, NOVEMBER 17 



ZEUGOPHORA SCUTELLARIS (SUFFR.) 



B. H. GRAVE 

 Knox College, Galesburg, III. 



TWELVE FIGURES 



The literature upon the beetles of the genus Zeugophora, 

 except for descriptions of species, is very meagre. The life 

 history of only one species is known and there are no published 

 figures of the larvae and pupae of any species. Kaltenbach, 

 however, gives a good brief description of the larva of Z. flavi- 

 coUis. 



The observations recorded in this paper were begun in the 

 fall of 1912 at the University of Wyoming. The work was 

 continued during the year but was interrupted the following 

 June. After an interval of two years new material was secured 

 which permitted completion of the work under laboratory 

 conditions. 



During my stay at the University of Wyoming I became 

 interested in some larvae which were feeding upon the leaves 

 of the cottonwoods which border the walks of the University 

 campus. The leaves were badly discolored and as much as one- 

 third or one-half of the green tissue of many of them had been 

 destroyed' by these larvae. It was for the purpose of identifying 

 the beetle that I began the study of its life history which is briefly 

 as follows: 



LIFE HISTORY OF ZEUGOPHORA SCUTELLARIS 



During the summer months the larvae work in the leaves 

 beneath the epidermis, eating out the pulp and causing blacken- 

 ing of the parts affected. As stated above, a large part of the 

 chlorophyl-bearing tissue may be destroyed in this way by the 

 end of summer, thus rendering the leaf ineffective as a starch- 



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JOURNAL OF MORPHOLOGY, VOL. 30, NO. 1 



