First regional record of two Mugilogobius Smitt (Gobiiformes: Gobiidae) from Penghu (Pescadores Islands), Formosan Strait

During an investigation of the freshwater crustacean fauna of Penghu Island, we collected Mugilogobius cavifrons (Weber, 1909) and Mugilogobius chulae (Smith, 1932). These species represent the second and third additions of Mugilogobius species diversity in Penghu and an addendum to their respective species distribution in the Formosan Strait. Herein, we give detailed descriptions of their morphology, sensory canal and papillae patterns, and fresh colorations and comparisons of the two species with their relatives on the adjacent island of Taiwan.