Larval Morphology of Megaporus Brinck, 1943 (Coleoptera: Dytiscidae): Descriptions of M. Hamatus (Clark, 1862) and M. Gardnerii (Clark, 1862) and Phylogenetic Considerations

The larvae of the Australian endemic species Megaporus gardnerii (Clark, 1862) and M. hamatus (Clark, 1862) are described and illustrated for the first time, with detailed morphometric and chaetotaxic analyses of the cephalic capsule, head appendages, legs, last abdominal segment, and urogomphi. We explore implications for understanding the evolution of larval morphological traits amongst selected Sternopriscina genera. A parsimony analysis...