Neue marine Cyclopoida Gnathostoma (Crustacea, Copepoda) von Puerto Rico. Amsterdam Expeditions to the West Indian Islands, Report 57

In the flat littoral of the coast of Puerto Rico (West Indies) at the reef of Cayo Enrique a few Cyclopoida Gnathostoma were collected in colonies of the corallimorpharian Ricordea florida Duch & Mich., which belong to the subfamilies Pterinopsyllinae and Euryteinae. These are the following species: Pterinopsyllus insularis n. sp., Euryte grata n. sp. and Ancheuryte notabilis n. g., n. sp. Pterinopsyllus insularis differs from the till now known species of the genus by the number of segments of the first antenna, as well as in the form and armature of P 5. A differential diagnosis and a key for the genus is added. Because of striking differences in the structure of antenna 1 and P 5, a new genus Pterinopsyllotus is established for Pterinopsyllus giesbrechti Wilson, 1973. Euryte grata belongs to a group of the genus, which shows a furca that is about four times as long as wide. It differs from comparable species in particular by the proportions of the terminal segment of Enp. 4 and moreover in the structure of the maxilliped. An identification key is provided. Ancheuryte notabilis differs clearly by the shape of the genital segment and the 2-segmented P 5 from the known Euryte species. Therefore it appears advisable to place this species in a separate genus. The diagnosis of the subfamily Euryteinae is completed. The three new species are characterized and figured in detail.