Alpheus paradentipes Coutière 1905

Alpheus paradentipes Coutière, 1905

Alpheus paradentipes Coutière, 1905:880, pl. 74: fig. 17 [type locality: Miladummadulu and Male atolls, Maldive Islands].—A.H. Banner, 1953:72, fig. 23, 24.

DIAGNOSIS.—(Macrocheles Group). Body not unusually compressed or setose; rostrum acute, not reaching nearly as far as distal margin of 1st antennular segment, carina low and short, base not abruptly delimited from adrostral furrows; carapace without median tooth or tubercle on gastric region, without paired acute teeth overhanging posterior ends of adrostral furrows, anterior margin concave and unarmed mesial to orbital hood, meeting rostrum at nearly right angle, region slightly flattened, rostral hoods armed with spines overreaching rostrum, adrostral furrows short, not deep; 2nd antennular segment nearly 3 times as long a wide; basal antennal segment (basicerite) armed with distinct lateral tooth not nearly reaching level of tip of stylocerite; antennal scale with lateral margin concave, distolateral spine elongate, far overreaching distal margin of tapered blade, but not especially stout; major cheliped with chela somewhat compressed, about 3 times as long as wide, dactyl directed somewhat toward ventral side of chela, not double-ended, palm with strong, carinate tooth each side of dactylar articulation, carina supporting tooth on mesial side of articulation interrupted by transverse incision, without longitudinal carina near margin proximal to fixed finger, without “saddle” or distal sinus on palm proximal to adhesive plaque, with nearly rectangular shoulder on margin proximal to fixed finger, minor chela nearly 5 times as long as wide, fingers about as long as palm, dactyl not “balaeniceps” in either sex, palm with strong tooth on each side at dactylar articulation; 2nd pereopod with proximal carpal article about 1 times as long as 2nd; 3rd pereopod with dactyl biunguiculate, propodus bearing about 8 pairs of spines on flexor margin, carpus distally produced on extensor margin, merus with strong distal tooth on flexor margin, ischium unarmed; maximum carapace length to base of rostrum probably about 4 mm.

RANGE.—Eastern Africa to Hawaii; offshore to a depth of at least 170 meters, sometimes living in sponges.

*58. Alpheus paralcyone Coutière, 1905

Alpheus paralcyone Coutière, 1905:895, pls. 80, 81: fig. 34 [type locality: 4 localities in the Maldive and Laccadive islands].—D.M. and A.H. Banner, 1982:113, fig. 30.—A.H. and D.M. Banner, 1983:57, fig. 8.

A[lpheus] Providencei Coutière, 1908:208 [type locality: Providence Island, Seychelles; 91–143 meters].

Crangon laysani Edmondson, 1925:17, fig. 3 [type locality: Laysan Island, Hawaii].

DIAGNOSIS.—(Crinitus Group). Body neither unusually compressed nor densely setose; rostrum represented by minute angle protruding but little beyond anterior margin of carapace, distinct, low median carina extending posteriorly to base of orbital hoods, rostral base not abruptly delimited from adrostral furrows; carapace without median tooth or tubercle posterior to base of rostrum and without paired teeth overhanging posterior ends of adrostral furrows, anterior margin faintly sinuous, unarmed, and somewhat flattened mesial to orbital hoods, orbital hoods unarmed, adrostral furrows shallow; 6th abdominal somite tridentate on posterior margin; 2nd antennular segment (basicerite) armed with sharp ventrolateral tooth not reaching level of tip of stylocerite; antennal scale with lateral margin concave in proximal , distolateral spine stout, far overreaching distal margin of narrowly tapered blade; 1st pereopods with merus bearing distal tooth on inferior flexor margin; major chela broadly oval in cross section, 2 times as long as wide, dactyl slightly curved in longitudinal plane, not double-ended, bearing short, truncated plunger, palm without sculpture; minor chela 3 to 4 times as long as wide, dactyl of male slightly longer than palm and wide, but not “balaeniceps,” in proximal of length, of female subequal to palm in length and very slender; 2nd pereopod with proximal carpal article less than as long as 2nd; 3rd pereopod with dactyl variably biunguiculate, propodus bearing 9 spines on flexor margin, carpus with both margins distally produced and 1 to 4 spines on flexor margin, merus bearing acute distal tooth on flexor margin, ischium bearing movable spine; maximum carapace length to base of rostrum about 7 mm.

MATERIAL.—PHILIPPINES. Southwest of Manila Bay, Luzon: sta 5108; 14°05′05″N, 120°19′45″E; 24 m; coral; 15 Jan 1908 (0834–0835); 9’ Albatross-Blake beam trawl, mud bags (dredging cable fouled on gin block; trawl not dragged on bottom): 1 ovig female [4.9]. Davao Gulf, Mindanao: sta 5249; 7°06′06″N, 125°40′08″E; 42 m; coral, sand; 18 May 1908 (1102–1109); 6′ Johnston oyster dredge: 1 male [3.3]; sta 5250; 7°05′07″N, 125°39′45″E; 42 m; coral, sand; 18 May 1908 (1124–1127); 6′ Johnston oyster dredge: 1 male [3.7]. Off Jolo Island, Sulu Archipelago: sta 5145; 6°04′30″N, 120°59′39″E; 42 m; coral sand, shells; 15 Feb 1908 (1344–1359); 12′ Agassiz beam trawl, mud bag: 1 male [4.7]; sta 5555; 5°51′15″N, 120°58′35″E; 62 m; coarse sand; 18 Sep 1909 (1109–1113); 6′ McCormick trawl: 1 ovig female [5.3]. Near Siasi, Sulu Archipelago: sta 5146; 5°46′40″N, 120°48′50″E; 44 m; coral sand, shells; 16 Feb 1908 (1011–1031); 12′ Agassiz beam trawl, mud bag: 1 ovig female [4.2]; sta 5147; 5°41′40″N, 120°47′10″E; 38 m; coral sand, shells; 16 Feb 1908 (1127–1147); 12′ Agassiz beam trawl, mud bag: 1 male [4.2].

RANGE.—Madagascar to Indonesia, Philippines, Japan, Australia, and Pacific islands to Hawaii; immediate subtidal to 165 meters.

*59. Alpheus pareuchirus pareuchirus Coutière, 1905

Alpheus pareuchirus Coutière, 1905:906, pl. 84: fig. 43. [type locality: Male Atoll, Maldive Islands].

Alpheus pareuchirus var. Leucothea De Man, 1911:420, pl. 23: fig. 102 [type locality: the type series came from 6 different Siboga stations in the Sulu Archipelago and Indonesia].

Alpheus pareuchirus pareuchirus.—D.M. and A.H. Banner, 1982: 276, fig. 85a–k.

DIAGNOSIS.—(Edwardsii Group). Body not unusually compressed or setose; rostrum prominent, not reaching as far as distal margin of 1st antennular segment, dorsal carina strong, blunt, not extending posteriorly beyond limits of orbital hoods, 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 mesial to orbital hoods unarmed, meeting rostral margin at about right angle, orbital hoods unarmed, adrostral furrows reasonably deep; 2nd antennular segment almost twice as long as wide; basal antennal segment (basicerite) armed with sharp ventrolateral tooth not reaching level of tip of stylocerite; antennal scale with lateral margin slightly concave, distolateral spine overreaching narrowly tapering blade; 1st pereopods with merus armed with acute distal tooth on inferior flexor margin; major chela somewhat compressed, nearly 2 times as long as wide, dactyl slightly curved in longitudinal plane, not double-ended, bearing short, truncated plunger, palm without longitudinal carina near margin proximal to fixed finger, with “saddle” proximal to adhesive plaque, shoulder proximal to “saddle” bluntly acute and overhanging “saddle,” shoulder on margin proximal to fixed finger very low and obtuse; minor chela nearly 3 times as long as wide, dactyl nearly as long as palm, “balaeniceps” in male only; 2nd pereopod with proximal carpal article slightly shorter or slightly longer than 2nd; 3rd pereopod with dactyl simple, propodus bearing 9–14 spines on flexor margin, carpus distally produced on extensor margin, merus unarmed, ischium with movable spine; maximum carapace length to base of rostrum about 10 mm.

MATERIAL.—PHILIPPINES. Near Siasi, Sulu Archipelago; sta 5147; 5°41′40″N, 120°47′10″E; 38 m; coral sand, shells; 16 Feb 1908 (1127–1147); 12′ Agassiz beam trawl, mud bag: 1 ovig female [4.2].

RANGE.—Red Sea, Madagascar, Seychelles, Maldives, Thailand, Indonesia, Philippines, Australia, and Caroline Islands; in depths of more than 3 meters.

*60. Alpheus parvirostris Dana, 1852

Alpheus parvi-rostris Dana, 1852a:22 [type locality: Balabac Strait]; 1852b:551.

Alpheus parvirostris.—Dana, 1855, pl. 35: fig. 3.—D.M. and A.H. Banner. 1982:185, fig. 56.—A.H. and D.M. Banner, 1983:60, fig 9.

Alpheus lineifer Miers, 1875:343 [type locality: Samoa Islands].

Alpheus euchiroides Nobili, 1906:257 [type locality: Marutea, Tuamotu Archipelago].

Alpheus braschi Boone, 1935:131, fig. 10, pl 34 [type locality: Pago Pago, Samoa Islands].

DIAGNOSIS.—(Edwardsii Group). Body not unusually compressed or setose; rostrum slender, sharp, nearly or quite reaching level of distal margin of 1st antennular segment, dorsal carina blunt, not extending posteriorly beyond orbital hoods, base not abruptly delimited from adrostral furrows; carapace without median tooth or tubercle on gastric region, without paired teeth overhanging posterior ends of adrostral furrows, anterior margin between rostrum and orbital hood unarmed, produced anteriorly to form flattened, convex prominence, orbital hoods unarmed, adrostral furrows moderately deep anteriorly; 2nd antennular segment fully 1 times as long as wide; basal antennal segment (basicerite) strong, considerably overreaching stylocerite; antennal scale with lateral margin rather decidedly sinuous, distolateral spine fairly stout, considerably overreaching distal margin of narrow blade; 1st pereopods with merus armed with strong, sharp distal tooth on inferior flexor margin; major chela somewhat compressed, about 2 times as long as wide, dactyl not noticeably curved in longitudinal plane, not double-ended, bearing well-developed plunger directed proximally, palm without longitudinal carina near margin proximal to fixed finger, with “saddle” proximal to adhesive plaque in form of distinct but narrow oblique groove with rounded proximal and distal shoulders; minor chela about 3 times as long as wide, fingers slightly shorter than palm, not “balaeniceps” in either sex; 2nd pereopod with proximal carpal article considerably longer than 2nd; 3rd pereopod with dactyl simple, propodus bearing about 10 spines on flexor margin, carpus with both margins projecting distally as acute teeth; merus with acute distal tooth on flexor margin; ischium with movable spine, maximum carapace length to base of rostrum no more than 6 mm.

MATERIAL.—PHILIPPINES. Southwest of Manila Bay, Luzon: sta 5108; 14°05′05″N, 120°19′45″E; 24 mm; coral; 15 Jan 1908 (0834–0835); 9′ Albatross-Blake beam trawl, mud bag (dredging cable fouled on gin block; trawl not dragged on bottom): 1 major cheliped.

RANGE.—Red Sea, eastern and South Africa to Japan, Philippines, Indonesia, and Australia to the Tuamotu Archipelago but not Hawaii; abundant on reef flats in dead coral, occasionally in living coral and sponges, to a depth of 32 meters.

MATERIAL.—PHILIPPINES. Southwest of Manila Bay, Luzon: sta 5108; 14°05′05″N, 120°19′45″E; 24 m; coral; 15 Jan 1908 (0834–0835); 9′ Albatross-Blake beam trawl, mud bag (dredging cable fouled on gin block; trawl not dragged on bottom): 2 males [3.3, 3.8].

RANGE.—Apparently known previously only from the ovigerous female holotype without the major cheliped, from a depth of 36 meters, off Pulau Salebabu in the northern Molucca Sea, southeast of Mindanao.

*62. Alpheus polyxo De Man, 1909

Alpheus Polyxo De Man, 1909a: 108 [type locality: Banda anchorage, Moluccas, Indonesia; 18–36 meters].

Alpheus polyxo.—D.M. and A.H. Banner, 1982:274, fig. 84.

DIAGNOSIS.—(Edwardsii Group). Body not unusually compressed or setose; rostrum sharply acute, reaching to about distal margin of 1st antennular segment, dorsal carina high, rounded, extending posteriorly onto anterior gastric region, 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 between rostrum and orbital hood unarmed, incised, orbital hood unarmed but projecting subrectangularly in mesial part, adrostral furrows well-marked; 2nd antennular segment about 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 concave, distolateral spine not unusually stout, distinctly overreaching tapered blade; 1st pereopods with merus armed with small distal tooth on inferior flexor margin; major chela somewhat compressed, fully twice as long as wide, dactyl not noticeably curved in longitudinal plane, not double-ended, having very short, truncated plunger well defined only proximally, palm without prominent longitudinal carina near margin proximal to fixed finger, with “saddle” proximal to adhesive plaque, proximal shoulder blunt, overhanging “saddle,” shoulder proximal to fixed finger strong, slightly projecting but not acute; minor chela 3 to 4 times as long as wide, fingers shorter than or equal to palm in length, dactyl “balaeniceps” in male only; 2nd pereopod with proximal carpal article twice as long as 2nd; 3rd pereopod with dactyl biunguiculate, propodus with about 10 spines on flexor margin, carpus with distal flexor margin bluntly produced distally, merus unarmed, ischium with small movable spine; maximum carapace length to base of rostrum about 11 mm.

MATERIAL.—PHILIPPINES. Southwest of Manila Bay, Luzon: sta 5109; 14°03′45″N, 120°16′30″E; 18 m; coral; 15 Jan 1908 (1026–1038); 9′ Albatross-Blake beam trawl (trawl immediately torn on coral): 1 female [6.2]. Off Romblon Island, Sibuyan Sea: sta 5179; 12°38′15″N, 122°12′30″E; 68 m; hard sand; 24.3°C; 25 Mar 1908 (1049–1104); 12′ Agassiz beam trawl, 3 mud bags: 1 male [6.7] 1 ovig female [10.0]. Near Siasi, Sulu Archipelago: sta 5147; 5°41′40″N, 120°47′10″E; 38 m; coral sand, shells; 16 Feb 1908 (1127–1147); 12′ Agassiz beam trawl, mud bag: 1 male [6.2] 1 female [8.9].

RANGE.—Madagascar, Philippines, Indonesia, and Australia; in subtidal dead coral to 130 meters.