New Records of Gemmaecaputia corrugata (Monogenea: Chauhaneidae) from Sphyraena forsteri (Sphyraenidae) off Yomitan Town, Okinawa-jima Island, Southern Japan

Abstract

Gemmaecaputia corrugata Tripathi, 1959 (Monogenea: Chauhaneidae), the type-species of Gemmaecaputia Tripathi, 1959, is redescribed from the gills of Sphyraena forsteri Cuvier, 1829 (Sphyraenidae) off Yomitan Town, Okinawa-jima island, Southern Japan, as a new country record. Sphyraena forsteri represents a new host record for this monogenean. The cox1 phylogenetic tree showed that G. corrugata and Pseudochauhanea macrorchis Lin, Liu, and Zhang, 2001 (Chauhaneidae) formed a sister group, but the 28S rDNA phylogenetic tree indicates that G. corrugata is nested in a clade comprised of Chauhaneidae and Protomicrocotylidae.