Preliminary Studies of Sugars and Amino Acids in the Honeydews of Five Species of Coccids Feeding on Citrus in California1

Abstract

Deposits of crystalline or syrupy honeydews (or mannas) on plants have attracted attention since ancient times. (See Braun, 1938, for a review of early literature.) Essig (1942) points out that the “manna of the Wilderness” of Biblical accounts was honeydew produced by the coccid Trabutina mannipara (Ehr.), feeding on Tamarix trees.