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Abstract
The main objective of the study is to describe in detail morphological structures on the mandibular molae of different larval Ephemeroptera. Therefore, representative samples of species of 80 genera from 28 families have been investigated by scanning electron microscopy. Six basic types of molar surface are differentiated. The respective types of molae differ in the cuticular structures of individual ridges. Relationships between the molar type, feeding categories, and phylogenetic position of individual taxa are discussed. The functional significance of various microstructures on the molar surfaces is explained.
Acknowledgements
I would like to thank to Prof. T. Soldán and Dr. A. Staniczek for valuable advice and comments on the project. My sincere thanks are due also to the Deutsche Forschungsgemeinschaft (DFG) for a travel scholarship allowing me to present this contribution at the International Joint Meeting on Ephemeroptera and Plecoptera 2008 in Stuttgart, Germany. This study was financially supported by the Grant Agency of the Czech Republic (Project No. 206/08/1389).