Description: English: Plate 42. DescriptionBinomial in textModern accepted name. 1, 1a, 1b, 1c. Large Emerald: egg, caterpillars and chrysalis. Geometra papilionariaunchanged. 2, 2a. Essex Emerald: eggs, caterpillar and chrysalis. Euchloris smaragdariaThetidia smaragdaria. Date: 1909. Source: The Moths of the British Isles, Second Series. Author: Richard South.