IN THIS ISSUE
Date of Publication: March 1970
| Spring moth activity in relation to locality, temperature, and air pressure | C.L. Selman and H.E. Barton | |
| Review: The moths of North America, North of Mexico. Fasc. 21. Sphingoidea by Ronald W. Hodges | W. Hovanitz | |
| Ecological and distributional notes on Erebia discoidalis | J.H. Masters | |
| A new subspecies of Euphydryas from Wyoming | C.D. Ferris | |
| Euphydryas editha gunnisonensis, a new subspecies from Western Colorado | F. Martin Brown | |
| Review: Butterflies of Trinidad and Tobago by Malcolm Barcant | W. Hovanitz | |
| A field captured scale-deficient mutant of Anthocaris sara | E.J. Dornfeld | |
| Revision of the Nearctic genus Philtraea | J.S. Buckett |
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