A collection of six morphometric measurements (forewing length, body length, thorax length, thorax width, abdomen length, and abdomen width) relating to the 177 macro-moth species sampled by two Rothamsted Insect Survey (RIS) light traps (Bentley Wood and Porton Down III) from 33 days across 2017 (11-14 & 31 May; 1, 14-21 & 25-27 June; and 1-11, 17-18, and 24-26 July). Full details about this dataset can be found at https://doi.org/10.5285/3a813bd9-59ae-476e-a170-ab83fe1587b2
