Supplementary Data 4: Head, proboscis, antenna and body measurements and aspect-ratio values of amber Dualulidae and compression Aneuretopsychina

Measurements are in millimeters. The symbol "‒" denotes an unknown value or the designation is inapplicable.The Proboscis Aspect Ratio is the ratio of length to the width of proboscis. The PL/HL Ratio is the ratio of length of proboscis to the head length. The PL/HL Ratio is the ratio of the length of proboscis to the length of the insect body. The insect body length excludes the antennae and proboscis but includes abdominal terminalia.