12 April 1985
Vol 228, Issue 4696

About The Cover

“Fur” (technically pile) on thorax of moth, Orthosia rubescens. Such fur allows noctuid winter moths to maintain thoracic temperatures above 30°C during flight at near freezing temperatures in late winter. It consists of modified scales (that color Lepidoptera wings), elongated to near 2 millimeters to serve as insulation. See page 177. [Bernd Heinrich, University of Vermont, Burlington 05405]