University of Massachusetts Amherst ScholarWorks@UMass Amherst Masters Theses 1911 - February 2014 1953 The Yellow-headed Spruce Sawfly in Maine. Edward John Duda University of Massachusetts Amherst Follow this and additional works at: https://scholarworks.umass.edu/theses Duda, Edward John, "The Yellow-headed Spruce Sawfly in Maine." (1953). Masters Theses 1911 - February 2014. 2871. Retrieved from https://scholarworks.umass.edu/theses/2871 This thesis is brought to you for free and open access by ScholarWorks@UMass Amherst. It has been accepted for inclusion in Masters Theses 1911 - February 2014 by an authorized administrator of ScholarWorks@UMass Amherst. For more information, please contact
[email protected]. i']■])'■: Y MID W-HEADED SPRUCE I) 0 D A -19 5 3 IMORR -LD 3234 iM268 1953 D344 ✓ A**-*- The Yellow-headed Spruce Sawfly in Maine Edward J. Dnda l?-1‘I^ x~ I'M ; Thesis submitted in partial fulfillment of the requirements for Degree of Master of Science. University of Massachusetts Amherst, Massachusetts June, 1953* To Mother < This thesis is dedicated in memory of Jennie E. Duds beloved mother and very dear friend, who has always been my inspiration. ACKNOWLEDGEMENTS The author is greatly indebted to H. B. Peirson, State Entomol¬ ogist of Maine who made the development of this problem possible* It was through hie generous efforts that the writer was permitted to use informa¬ tion that had been obtained while under the employ of the Maine Forest Service* Indebtedness is also expressed to The F. A* Bartlett Tree Expert Company of Stamford, Connecticut who so generously granted the author leave from his present duties to complete this work* The writer also wishes to make acknowledgements to J* F* Hanson, Assistant Professor of Entomology, University of Massachusetts, under whose direction this work was done) to W* B* Becker and R* P* Holdsworth who also, as members of the thesis committee, critically read this thesis and offered helpful suggestions) to R* W* Nash and A* E.