Upogebia marina Coêlho 1973

Upogebia marina Coêlho, 1973

Upogebia (Upogebia) sp. C. Coêlho and Ramos. 1972:163.

Upogebia (Upogebia) marina Coêlho, 1973b:345.—Coêlho and Rattacaso, 1988:385.

Upogebia marina.—Coêlho and Ramos-Porto, 1987:36.

MATERIAL EXAMINED.—VENEZUELA: USNM 251405, 1 , Turpialito, ∼20 km E of central Cumaná, soft mud over shell mush, faint H2S odor, inside pier, 24°C, 35 ppt, M.L. Jones, C-78-2, 17 Jan 1978; USNM 251406, 1 , Laguna Grande on outer peninsula, opposite Cumaná, from coarse sand and rocks, 24°C, 35 ppt, M.L. Jones, C-78-3-1, 17 Jan 1978.

BRAZIL: Alagoas: MZUSP 8955, 1 (ovig.), 09°15′S, 35° 14′W, Askaroa sta 21, 9 Sep 1965.

DIAGNOSIS.—Projections to either side of rostrum ending in small acute spine. Postocular spine present. Abdominal sternites unarmed. T subrectangular. Carpus of cheliped with 2 strong spines on distomesial margin. Merus of P2 bearing 1 proximal mesioventral spine and 1 subdistal dorsal spine; that of P3 and P4 spineless.

DESCRIPTION.—Rostrum triangular, slightly downcurved; tip exceeding eyestalks in normal position by about width of cornea; dorsal pair of strong subapical spines followed on each side by 3 remote spines; posteriorly divergent lateral ridge bearing crest of 12 or more spines, strongest on process lateral to rostrum and decreasing posteriorly. Shoulder lateral to cervical groove unarmed. Postocular spine present.

Abdominal sternites unarmed.

T subrectangular, transverse proximal ridge confluent with inconspicuous lateral ridge at each side.

Eyestalk stout, deepest at about midlength, slightly concave dorsally, noticeably convex ventrally, almost horizontal in repose; prominent terminal cornea narrower than diameter of stalk.

A1 peduncle reaching to base of terminal article of A2 peduncle, its proximal 2 articles together slightly longer than terminal article.

A2 peduncle with about its length extending beyond tip of rostrum; article 2 bearing obsolescent subdistal ventral spine; scale moderate, oval.

Mxp3 bearing epipod.

Epistomial projection broadly rounded in lateral view, bearing small spine on anterodorsal aspect.

Chelipeds slender. Coxa unarmed. Ventral margin of ischium bearing 1 spine. Merus with row of 2–5 small spines on ventral margin; single subdistal dorsal spine reaching level of postocular spine. Carpus trigonal, shallow longitudinal groove laterally, without spine at anterior ventrolateral corner; mesiodorsal crest of 8 small spines behind prominent dorsal spine on anterior margin partly obscured by setae, and 2–3 short stout spines obscured by setae on anterodorsal margin mesial to articulation with propodus; strong spine near middle of anteromesial margin, slightly smaller spine dorsal to it, and strong slender spine at distoventral corner. Chl about 3 times chh; spineless dorsal and mesiodorsal ridges present; small distomarginal spine below lateral and mesial dactylar condyles, small spine on distal margin of palm ventral to mesial condyle; mesial surface unarmed, but low transversely arcuate ridge near proximomesial corner. Fixed finger much shorter than dactyl and more slender, slightly downcurved in middle and tapering to slender tip, 4–7 teeth on proximal prehensile edge. Dactyl longitudinally ridged and setose; corneous tip preceded on prehensile edge by unarmed interval and strong tooth closing against tip of fixed finger, then a more or less sinuous crenulate crest increasing to strong tooth at its proximal and greatest height, toothless section basally; curved extensor surface bearing about 2–3 small tubercles proximally.

P2 reaching to about distal of palm; carpus with obsolescent distodorsal spine and subdistal ventral spine; merus with slender subdistal dorsal spine and strong proximal mesioventral spine; coxa unarmed. Ischium and merus of P3 and P4 spineless, except coxa of P3 with broad low spine lateral to gonopore.

U with blunt spine on protopod above base of mesial ramus; lateral ramus with mesial rib bearing obsolete spine proximally.

MEASUREMENTS (in mm).—Ovigerous , acl 5.2, cl 7.2, chl 4.1, chh 1.3.

TYPE LOCALITY.—Station SALD 1730, 21 m depth in littoral of Piauí, Brazil.

KNOWN RANGE.—Venezuela, this paper, and Brazil from Piauí to Sergipe (Coêlho and Ramos-Porto, 1987; Coêlho and Rattacaso, 1988).

HABITAT.—Calcareous algae, reefs, sand, including estuaries (Coêlho and Ramos-Porto, 1987; Coêlho and Rattacaso, 1988).