Diagnostic characters of Pyrrhalta formosanensis sp. nov. A antenna, male B antenna, female C aedeagus, dorsal view D ditto, left-side view E ditto, ventral view F ditto, right-side view G apex of tibia of middle leg, male H abdominal ventrite VIII I spermatheca J gonocoxae K abdominal ventrite V, male L abdominal ventrite V, female M tarsi of middle leg, male.