The nymphs of aquatic species (also called naiads), such as dragonflies, have gills and other modifications for an aquatic existence.
2
提供了蜉蝣目中国所有已知15科稚虫的检索表,并对重要检索特征进行了详细图示。
The larval key to 15 families of Ephemeroptera from China are provided. All important characters used in the key are illustrated in detail in order to facilitate using.