Volume 11, Number 2 - Summer 1978 (1978)
Peer-Review Articles
Description of the Nymph of Centroptilum Walshi (Ephemeroptera: Baetidae), with Biological Notes
Edward A. Bergman and William L. Hilsenhoff
Mating Flights of Ephoron Album (Ephemeroptera: Polymitarcidae) in Michigan
Kenneth J. Kraft, D. Kent Johnson, and Richard H. Sypniewski
A Modified Method for Reading Midges (Diptera: Chironomidae)
Peter G. Meier and Henry C. Torres
A New Species of Podapolipid Mite, and a Redescription of Tetrapolipus Blattae (Oudemans) (Acarina: Podapolipidae)
Robert W. Husband
A Local Replacement of Bombus Ternarius by Bombus Terricola in Northern Wisconsin (Hymenoptera: Apidae)
James D. Thomson
Phenotypic Expression in the Paper Wasp Polistes Fuscatus (Hymenoptera: Vespidae)
Bonnie K. MacLean, Leland Chandler, and David B. MacLean
Cereal Leaf Beetle (Coleoptera: Chrysomelidae) Influence of Seeding Rate of Oats on Populations
J. A. Webster, D. H. Smith, and S. H. Gage