Figure 1 from: Kasparek M (2018) Taxonomic revision proves Trachusa pubescens (Morawitz, 1872) sensu lato to be a complex of allopatric and sympatric species in South-Eastern Europe and Western Asia (Hymenoptera, Apoidea, Anthidiini). ZooKeys 764: 111-144. https://doi.org/10.3897/zookeys.764.24581

Figure 1 Measurements taken for the morphometric analysis. Note that the measurements were taken from positions in which both points of reference become equidistant from the lens of the microscope. This is not necessarily the perspective shown in the drawing.