Fig. 1

Photos of studied species taken in an indoor aquarium. a Male P. himantegus himantegus; b female P. h. himantegus; c male Paratanakia himantegus chii; d female P. h. chii. [Photos were taken by Dr. Yun-Ching Chang and Mr. Ta-Ching Chang]
Photos of studied species taken in an indoor aquarium. a Male P. himantegus himantegus; b female P. h. himantegus; c male Paratanakia himantegus chii; d female P. h. chii. [Photos were taken by Dr. Yun-Ching Chang and Mr. Ta-Ching Chang]