Key to species of Parabeloniscus

1. Each lateral margin of the scutum with a conspicuous protuberance.............................................. 2

- Lateral margin of the scutum without conspicuous protuberance, only with granules................................ 3

2. Pedipalpal femur ventrally with four setiferous tubercles; free tergite III of male with a median spine..... P. corneus sp. nov.

- Pedipalpal femur ventrally with five setiferous tubercles; free tergite III of male without median spine........ P. nipponicus

3. Carapace with an enlarged setiferous tubercle on each side of front margin, free tergite III of male with a median spine................................................................................................. P. caudatus

- Carapace with more than one small setiferous tubercle on each side of front margin, free tergite III of male without median spine..................................................................................... P. shimojanai