New species and records of Asellota from the Indian Ocean (Crustacea: Peracarida: Isopoda) Author Kensley, B Author Schotte, M text Journal of Natural History 2002 36 1421 1461 journal article 1464-5262 Hansenium expansum sp. nov. (gure 14) Type material. HOLOTYPE : USNM 253205 , 3.1 mm , sta JR-33 A, Nosy Bé , Madagascar , 1 m , 15 January 1964 . PARATYPES : USNM 253206 , two 2.8–3.1 mm , four ovigerous 2.9–3.0 mm, four juveniles , same data as holotype ; USNM 253207 , two 2.8 mm , three, sta JR-29 A, Nosy Bé , Madagascar , 1.5 m , 11 January 1964 . Other material. ZMUC , two, one ovigerous, one, sta CRU-1893, coral from Murogo Reef , Zanzibar , 14 m , 20 September 1995 ; ZMUC , four, two ovigerous, two, ve juveniles, sta CRU-1926, Murogo Reef , Zanzibar , 9 m , 20 September 1995 . Diagnosis. Rostrum basally wider than long, tapering to truncate anterior margin. Pleotelson 1.2 times wider than midlength, lateral margin with single tooth. Eyes reniform. Pereopod 1 in male, carpus with lateral surface expanded into broad subcircular lobe bearing fringe of setae; propodus with proximal region of posterior margin expanded into broad setose lobe bearing single articulated robust seta, distinctly oVset from rest of palm, latter with four low triangular teeth; dactylus with row of 12 short serrate setae on posterior margin. Operculum of female shield-shaped, 1.5 times longer than greatest width. FIG. 14. Hansenium expansum sp. nov. : (A) male dorsal view; (B) male pereopod 1; (C) female pereopod 1; (D) male pleopod 2; (E) female opercular pleopod 2. Etymology. The speci c name refers to the expanded nature of the carpus of pereopod 1 in the male.