A review of the North and Central American species of Paravilla Painter (Diptera--Bombyliidae) av Hall, Jack Clayton

Wasps of the genus Trypoxylon subgenus Trypargilum in North America Hymenoptera, Sphecidae av Coville, Rollin E.

An introduction to the study of insects av Borror, Donald J. 1907-

Table of contents only

Biosystematic studies of Ceylonese Wasps, XVIII a monograph of the Philanthidae (Hymenoptera : Sphecoidea) av Krombein, Karl V.

Plant diseases and vectors ecology and epidemiology

How to know the beetles av Arnett, Ross H. Jr

Adult and immature Tabanidae (Diptera) of California av Middlekauff, Woodrow Wilson, 1913-

A comparative study of the genital segments and the genital chamber in female Trichoptera av Nielsen, Anker

Cytotaxonomy of the Lygaeidae (Hemiptera-Heteroptera) av Ueshima, Norihiro

Common larvae of Chironomidae (Diptera) from New York State streams and rivers with particular reference to the fauna of artificial substrates av Simpson, Karl W.