Data for: A new genus of Protopsyllidiidae (Hemiptera, Sternorrhyncha) from the Middle Jurassic of northeastern China

This dataset contains the data supporting the manuscript entitled “A new genus of Protopsyllidiidae (Hemiptera, Sternorrhyncha) from the Middle Jurassic of northeastern China”. The dataset includes specimen images, measurement spreadsheets, Supplementary Table 1, and source image files used for the figures. The physical fossil specimens examined in this study are deposited in the fossil insect collection of the Key Laboratory of Insect Evolution and Environmental Changes, College of Life Sciences, Capital Normal University, Beijing, China (CNUB), under specimen numbers CNU-PSY-LB2026020PC and CNU-PSY-NN2026021.