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Alpheus proseuchirus De Man 1908

Comprehensive Description

provided by Smithsonian Contributions to Zoology
Alpheus proseuchirus De Man, 1908

Alpheus proseuchirus De Man, 1908:111 [type locality: 2 Siboga stations in and near entrance to Teluk Kuandang, north coast of Celebes, Indonesia; 72 and 75 meters]; 1911:407, pl. 22: fig. 96.—A.H. and D.M. Banner, 1981:233.

DIAGNOSIS.—(Edwardsii Group). Body not unusually compressed or setose; rostrum sharp, reaching nearly as far as distal margin of 1st antennular segment, flat dorsally, sharply delimited from adrostral furrows; carapace without median tooth or tubercle on gastric region or strong paired teeth overhanging posterior ends of adrostral furrows, anterior margin mesial to orbital hood unarmed, transversely concave, meeting rostral margin at more than right angle, orbital hoods unarmed, adrostral furrows deep and narrow; 2nd antennular segment twice as long as wide; basal antennal segment (basicerite) armed with very small spine; antennal scale with lateral margin slightly concave, distolateral spine distinctly overreaching distal margin of tapered blade; 1st pereopods with merus armed with acute distal tooth on inferior flexor margin; major chela 3 times as long as wide, dactyl not double-ended, palm with “saddle” proximal to adhesive plaque, shoulder proximal to “saddle” broadly acute and slightly overhanging “saddle,” shoulder on opposite margin proximal to fixed finger rather weak; minor chela 4 times as long as wide in male, 4 times as long as wide in female, fingers subequal in length to palm in male, nearly 1 times as long in female, “balaeniceps” in male only; 2nd pereopod with proximal carpal article 1 times as long as 2nd; 3rd pereopod with dactyl simple, subspatulate, propodus bearing 7 spines on flexor margin, carpus slightly produced distally on extensor margin, merus unarmed, ischium with movable spine; maximum carapace length to base of rostrum about 8 mm.

RANGE.—Philippines and Indonesia; 22–134 meters.

*64. Alpheus pustulosus A.H. and D.M. Banner, 1968

Alpheus pustulosus A.H. and D.M. Banner, 1968:143, fig. 2 [type locality: south of Hong Kong; 21°N, 114°E; 55–73 meters; mud and sand]; 1981:233.

DIAGNOSIS.—(Brevirostris Group). Body not unusually compressed or setose; rostrum not reaching as far as distal margin of 1st antennular segment, strongly but bluntly carinate in midline, carina not extending far posteriorly, base not abruptly delimited from adrostral furrows; carapace without median tooth or tubercle on gastric region or paired teeth overhanging posterior ends of adrostral furrows, anterior margin transverse or concave and unarmed mesial to orbital hood, curving directly onto rostral margin, region not unusually flattened, orbital hoods unarmed, adrostral furrows deep anteriorly; 2nd antennular segment 2 times as long as wide; basal antennal segment (basicerite) armed with sharp ventrolateral tooth not nearly reaching level of tip of stylocerite; antennal scale with lateral margin very slightly concave, distolateral spine not unusually stout, slightly overreaching distal margin of blade; 1st pereopods with merus armed with small distal tooth on inferior flexor margin; major chela compressed, 4 times as long as wide, dactyl not double-ended, bearing very short plunger defined only proximally, palm without teeth either side of dactylar articulation, sculpture limited to flattened margin proximal to fixed finger and shallow depression extending proximally from fixed finger on one lateral surface, surface obscurely pustulate; minor chela about 8 to 9 times as long as wide, dactyl slightly shorter than palm, “balaeniceps” in male; 2nd pereopod with proximal carpal article as long as 2nd; 3rd pereopod with dactyl simple, subspatulate, propodus bearing 7 or 8 spinules on flexor margin, carpus and merus unarmed, ischium with small movable spine; maximum carapace length more than 7 mm.

MATERIAL.—PHILIPPINES. Southeastern Visayan Sea near Guintaoan Island; 11°16′45″N, 123°55′45″E; 130 m; green mud; 3 Apr 1908 (1112–1132); 12′ Agassiz beam trawl, 3 mud bags: 1 male [7.2].

RANGE.—Known from only two localities, both in the Philippines, in addition to the type locality in the northern South China Sea south of Hong Kong; 55–134 meters.

MATERIAL.—PHILIPPINES. Off Tawitawi, Sulu Archipelago: sta 5159; 5°11′50″N, 119°54′E; 18 m; coarse sand; 21 Feb 1908 (1008–1010); 9′ Johnston oyster dredge: 1 male [10.1] holotype (USNM 205666) 1 ovig female [12.8].

TYPE LOCALITY.—Off Tawitawi, Sulu Archipelago, Philippines, as cited above.

RANGE.—Known only from the pair of specimens from the type locality.
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bibliographic citation
Chace, Fenner Albert, Jr. 1997. "The Caridean shrimps (Crustacea:Decapoda) of the Albatross Philippine Expedition, 1907-1910, Part 7: Families Atyidae, Eugonatonotidae, Rhynchocinetidae, Bathypalaemonidae, Processidae, and Hippolytidae." Smithsonian Contributions to Zoology. 1-106. https://doi.org/10.5479/si.00810282.381.1