Macrophthalmus quadratus

A. Milne Edwards, 1873

Short horny ridge present on inner margin, or on inner surface near inner margin, of merus of cheliped; lower orbital border with small number of large triangular protuberances occupying at least one fifth of the margin; inner surface of palm of chela with mat of hair; outer surface of palm and index with row of granules near to and subparallel with lower margin. (Davie 1997)

Carapace surface covered with small rounded granules except in a smooth area including gastric, cardiac, and intestinal regions; front deflexed, slightly constricted between bases of ocular peduncles, with proximal halves of lateral margins granular, bilobed distally, median furrow deep; lateral margins straight and slightly convergent, 3 antero-lateral teeth, of which the first 2 are large and the third is small. Ocular peduncles short and stout, cornea extending to centre of external orbital angle. Central region of epistome straight. Merus of third maxilliped subequal to ischium. Merus of male cheliped with a short horny ridge (musical crest) near inner margin; palm short and high, outer face very closely covered with small rounded granules, inner face covered by thick short hair, without granules, tubercles or spines beneath hair; immovable finger straight, cutting edge with a long, low crenulated tooth, occupying most of the length; cutting edge of dactylus proximally with a small quadrangular tooth, distally with a row of conical granules. Meri of ambulatory legs with short thick hair along upper margins; upper margin of propodus of third pereiopod with thick hair. (Türkay 1995)

Type locality: New Caledonia.
Range: Thailand - Phuket (Komai et al., 1995); Taiwan; New Caledonia (A. Milne Edwards, 1873, Tesch, 1915).

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