Portunus anceps (de Saussure 1857)

Portunus anceps (De Saussure, 1857)

Lupea anceps De Saussure, 1857:502.

Portunus (Portunus) anceps.—Williams, 1984:387, fig. 302.

MATERIAL.—Manning 1971 Collection: Sta ASC-22, McArthur Point 1 male [8.0].

Smithsonian 1976 Collection: Sta 8–76, McArthur Point: 2 males [10.5–11.7],1 ovig. female [11.4].

Other Collections: Ascension Island: 1 dry female [12.0] (BMNH).—Olson (1970), McArthur Point, sandy bottom tide pool: 2 males [7.3–10.7], 1 female [10.1].

COLOR.—Background color off-white, carapace with some brown mottling; lateral spine of carapace with brown spot at midlength; cheliped with brown spot dorsally at distal two-thirds, smaller spot distally; carpus, propodus, and basal third of dactylus of cheliped each with brown spot; merus, carpus, and propodus of walking legs with brown spot near midlength; distal segment of fifth leg white.

SIZE.—Carapace lengths of males,7.3–1 1.7 mm; of females, 10.1–12.0 mm; of ovigerous female, 11.4 mm.

HABITAT.—In protected tide pool with coarse sand bottom.

DISTRIBUTION.—Western Atlantic from Bermuda and North Carolina to Brazil; central Atlantic from Ascension; usually in shallow water, to 20 meters.