Volume 23, Number 4 - Winter 1990 (1990)

PDF

Abundance and Identification of the Leafmining Guild on Apple in the Mid-Atlantic States
M. W. Brown

PDF

Use of a Monitoring System to Evaluate Pesticide Efficacy and Residual Activity Against Two Pine Root Weevils, Hylobius Pales and Pachylobius Picivorus (Coleoptera: Curculionidae), in Christmas Tree Farms
Lynne K. Rieske and Kenneth F. Raffa

PDF

The Thimbleberry Gallmaker, Diastrophus Kincaidii, (Hymenoptera: Cynipidae), in the Great Lakes Region
Kenneth J. Kraft and Frederic H. Erbisch

PDF

Siphonaptera Records and Host Associations From the Central and Eastern Upper Peninsula of Michigan
William C. Scharf, Patrick E. Lederle, and Thomas A. Allan

PDF

Ecology and Host Associations of Histiogaster Arborsignis (Acari: Acaridae) in the Great Lakes Region, Particularly in the Huron Mountains of Northern Michigan
Barry M. OConnor

PDF

Life Cycles of Leuctra Duplicata and Ostrocerca Prolongata in an Intermittent Streamlet in Quebec (Plecoptera: Leuctridae and Nemouridae)
P. P. Harper

PDF

Determination of Frequency and Distribution of Hessian Fly (Diptera: Cecidomyiidae) Biotypes in the Northeastern Soft Wheat Region
B. H. Chen, J. E. Foster, P. L. Taylor, J. E. Araya, and C. Kudagamage

PDF

Occurrences of Eumorpha Fasciata, Hyles Gallii, Sphinx Franckii and S. Vashti (Lepidoptera: Sphingidae) in Illinois
Everett D. Cashatt, George L. Godfrey, and James R. Wiker

PDF

A Further Note on Glenosticta Pictifrons (Hymenoptera: Sphecidae) in Michigan
Mark F. O'Brien