Quadrella serenei

Galil, 1986

Carapace globose, constricted behind postorbital teeth. Antero-lateral borders inflated. Epibranchial tooth minute, rounded. Frontal lobes triangular, acute; V-shaped median sulcus, deeper than submedian indentation. Lateral teeth not jutting as far forward as submedian pair. Supraorbital angle tuberculate, distalmost tubercle largest. Postorbital tooth long, acute. Infraorbital tooth conical, almost as prominent as lateral teeth.
Interantennular septum stout, rounded. Anterior edge of buccal frame sinuous, imperceptibly notched medially; notched lips at termination of exhalant canals. Exognath of exterior maxillipeds hourglass-shaped; tooth at anterior margin rounded. Margin of ischium of endognath with minute tubercles on posterior half; merus with distal exterior angle extended, distal internal angle obliquely cut, inner margin rounded.
Frontal edge of ischium of cheliped with several rounded tubercles; merus, about four-fifths carapace length, with row of raised tubercles anteriorly, successively larger and more acuminate distally. Carpus rounded. Chela swollen, microscopically granulate.
First ambulatory leg less than twice carapace length; propodus, longer than dactyl, with 16 cornute spines on posterior margin. On posterior margin of first ambulatory dactyl 13 triangular teeth, imperceptibly diminishing in size proximally; on internal margin, slightly above triangular teeth, row of 14 cornute spines; on anterior border of dactyl irregular rows of short setae. Apical dactylar tooth acuminate, curved, cornute. Propodus of fourth ambulatory leg stout, only slightly longer than dactyl, posterior margin armed with 10 spines. On posterior margin of fourth ambulatory dactyl 14 triangular teeth, on internal border 15 spines. (Galil, 1986b)

Type locality: Fort Dauphin, Madagascar.
Range: Kenya (Serène, 1984, Castro, 1999a); Seychelles (Serène, 1977, Galil, 1986b, Castro, 1999a); Madagascar - Fort-Dauphin (Serène, 1975), Fort-Dauphin and south coast (Serène, 1984, Galil, 1986b), Fort-Dauphin, south coast and Nosy Bé (Castro, 1999a); Réunion (Castro, 1999a); ?Mauritius (Ward, 1942b, Michel, 1964); Cargados Carajos (Rathbun, 1911, Galil, 1986b, Castro, 1999a); Chagos Archipelago (Castro, 1999a); Nicobar Islands (Galil, 1986b, Castro, 1999a); Japan - Nanki Shirahama (Castro, 1999a); Vanuatu (Castro, 1997a, Castro, 1999a); Marquesas Islands - (Monod, 1979, Serène, 1975), Fatu Hiva (Castro, 1997b), Tahuata (Castro, 1997b), Tahuata, Fatu Hiva, Eiao and Nuku Hiva (Castro, 1999a); 10-466 m.

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