Front cover:

Cover: Micro-computed tomography image of a middle-barred minor (Lepidoptera: Noctuidae). In this issue, Rühr & Lambertz show that a thin layer of gold atoms on the surface of a sample makes even delicate integumental structures such as setae, wings and wing scales accessible via micro-computed tomography. The method is applicable for a wide variety of not only biological surfaces.

This study focuses on the variability of expression of the bone modeling patterns of the maxilla in an ontogenetic series of European ancestry. Digital maps were created to visualize potential changes across time. The bone modeling patterns were found to be fairly constant through time. Bone resorption varies in the size of its fields, but not in location.

Loops of Henle in the developing kidney navigate according to long-range cues, apparently emanating from mature collecting ducts or their associated stroma.