Stephonyx, a new, widespread genus of lysianassoid Amphipoda

  title={Stephonyx, a new, widespread genus of lysianassoid Amphipoda},
  author={James K. Lowry and Helen Stoddart},
A new genus, Stephonyx, is established for six species of scavenging lysianassoid amphipods currently included in the genus Euonyx. Stephonyx is distinguished from other lysianassoid genera by a combination of characters which include the structure of the mandibular molar, the structure of the spine-teeth on maxilla 1, and a chelate gnathopod 1. Species of Euonyx are considered to be commensals of echinoderms with modified mouthparts in which the mandibular molar is lost, the lacinia mobilis is… CONTINUE READING