Abstract
The egg, prelarva, larva, and nymph of Allothrombium lerouxi Moss are described. The chaetotaxy of the larva is discussed, and a key is given for separation of the six Allothrombium species known from the larval stage. On the basis of larval morphology, the closest affinity of A. lerouxi apparently is to the Palaearctic A. fuliginosum (Hermann).