The proboscidial papillae are one of the major identification characters in Glyceridae. Due to their small size, light microscopy very often does not show their full details. Therefore, the proboscidial papillae of five European species of the Glyceridae are described using scanning
electron microscopy. All five species show typical papillae with species-specific structurcs. Glycera tridactyla can be distinguished from G. alba by the size and structure of the respective "fingernail papillae". Thus, the proboscidial papillae provide a reliable character for
species identification when studied by scanning electron microscopy.
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