Family LYCAEOPSIDAE Chevreux, 1913

Lycaeopsis themistoides

© Copyright from Zeidler 1978: fig. 21.

Museums

Regional Maps

Introduction

The Lycaeopsidae are a monotypic family with only two species. Both species occur in Australian waters and both appear to be associated with siphonophores (Laval 1980). Vinogradov et al. (1982) provided a key to species.

Diagnosis

Head deeper than long; anteroventral margin rounded; rostrum absent; eyes occupying most of lateral surface of head. Body laterally compressed. Antenna 1 longer than antenna 2; peduncle 1- or 2-articulate; peduncular article 1 shorter than or subequal to article 2; calceoli absent. Mandible molar absent; palp present or absent. Maxilla 1 inner plate absent; palp absent. Maxilla 2 inner plate absent. Gnathopod 1 simple; carpus shorter than propodus. Pereopod 3 carpus shorter than propodus. Pereopod 5 shorter than, subequal to, or longer than pereopod 6; basis without posteroventral lobe; carpus linear. Pereopod 6 longer than pereopod 7; basis expanded. Pereopod 7 basis slightly expanded or linear. Uropod 2 inner ramus subequal to, or longer than outer ramus. Uropod 3 sexually dimorphic; biramous.

General References

Chevreux, E. 1913. Sur quelques intéressantes espèces d'amphipodes provenant des parages de Monaco et des pêches pélagiques de la Princesse-Alice et de l'Hirondelle II en Méditerranée. Bulletin de l'Institut Océanographique Monaco 262: 1-26

Laval, P. 1980. Hyperiid amphipods as crustacean parasitoids associated with gelatinous zooplankton. Oceanography and Marine Biology Annual Reviews 18: 11-56

Vinogradov, M.E., Volkov, A.F. & Semenova, T.N. 1982. Amphipoda — Hyperiidea of the World Ocean. Nauka Leningrad U.S.S.R. Opred. po Faune S.S.S.R 132: 1-491 [in Russian]

Zeidler, W. 1978. Hyperiidea (Crustacea: Amphipoda) from Queensland waters. Australian Journal of Zoology Supplementary Series 59: 1-93

Zeidler, W. 1998. Pelagic amphipods (Crustacea: Amphipoda: Hyperiidea) collected from eastern and south-eastern Australian waters by the CSIRO vessel "Warreen" during the years 1938–1941. Records of the South Australian Museum (Adelaide) Monograph Series 4: 1-143

History of changes