- External morphology
Chiseled lateral palps. Shallow concave indention on aboral edge. Size 33.6 mm x 25 mm
While the size and uniquely arched oral groove greatly resembles Aspericardis lehmeri, the unique edge morphology clearly puts this occlupanid in its own genus. In addition, the dential processes of Acerlatus madisoniae are squared-off, instead of rounded. Discovered and described by FORC occlupanologist M. Taylor, who found it clinging to a bag of potatoes at a Walmart in Champaign, Illinois. It shares this host organism with a number of similarly-proportioned occlupanids, notably A. lehmeri and Serrategula kartoffelensis.