Abstract
The larval exuviae of six Cicadidae species (Graptopsaltria nigrofuscata, Meimuna opalifera, Platypleura kaempferi, Tanna japonensis, Hyalessa maculaticollis, Cryptotympana facialis) distributed in the urban areas of Kanagawa Prefecture were morphologically studied based on the specimens collected in 2012-2013, and a key to species is proposed. To clarify the distinction points in the key, the morphometrical study was done on body, antennae, foreleg femora and postclypeus. We recognized the useful character states in shape, ratios and number of antennomeres, shape of fore femur and length/width of postclypeus. In general, these 6 species were separated into three groups by the number of antennomeres. Graptopsaltria nigrofuscata and H. maculaticollis have 7 antennomeres and are identified by the ratios of 2nd and 3rd antennomeres length, foreleg femora, and length/width of postclypeus. Meimuna opalifera and T. japonensis have 8 antennomeres and are identified by the ratios of 3rd and 4th antennomeres length and length/width of postclypeus. Platypleura kaempferi and G. fasialis have 9 antennomeres and are easily distinguished by the body size.
