Alpheus facetus de Man 1908

Alpheus facetus De Man, 1908

Alpheus facetus De Man, 1908:100 [type locality: off Djedan, Kepulauan Aru, Indonesia; 5°23'S, 134°41′E; 18 meters].—D.M. and A.H. Banner, 1982:62, fig. 14; 1985:17.

DIAGNOSIS.—(Sulcatus Group). Body not unusually compressed or setose; rostrum acute, nearly reaching level of distal margin of 1st antennular segment, dorsal carina blunt, widening slightly posteriorly and extending to near midlength of carapace, base not abruptly delimited from adrostral furrows; carapace without median tooth or tubercle on gastric region or paired large acute teeth overhanging posterior ends of adrostral furrows, anterior margin between rostrum and orbital hood forming flattened, convex prominences, orbital hood bearing marginal spine directed anteromesiad, adrostral furrows wide and shallow; 2nd antennular segment nearly 1 times as long as wide; basal antennal segment (basicerite) armed with acute tooth reaching level of tip of rostrum but not quite as far as end of stylocerite; antennal scale with lateral margin nearly straight, distolateral tooth not unusually strong, but distinctly overreaching distal margin of tapered blade; anterior pereopods with merus armed with small acute distal tooth on inferior flexor margin; major chela slightly compressed, from less than 2 to more than 3 times as long as wide, dactyl lying in longitudinal plane of palm, not double-ended, bearing rather strong plunger directed proximally, making virtually no angle with opposable margin of dactyl on distal side of plunger, palm without teeth either side of dactylar articulation, without “saddle” proximal to adhesive plaque but often with paired oblique ridges on central part of palm; minor chela about 4 times as long as wide, fingers about as long as palm, dactyl not “balaenicipes” in either sex; 2nd pereopod with proximal carpal article about twice as long as 2nd; 3rd pereopod with dactyl simple, propodus bearing about 11 spines on flexor margin, carpus with distal angles slightly projecting, merus unarmed, ischium bearing movable spine; maximum carapace length to base of rostrum about 10 mm.

RANGE.—Western Indian Ocean, Thailand, Viet Nam, Philippines, Indonesia, Japan, Australia, and Caroline Islands; intertidal to 30 meters.

30. Alpheus foresti A.H. and D.M. Banner, 1981

Alpheus foresti A.H. and D.M. Banner, 1981:229, fig. 4 [type locality: southwest of Manila Bay, Philippines; 14°02.7′N, 120°20.3′E; 200 meters].—D.M. and A.H. Banner, 1985:17.

DIAGNOSIS.—(Edwardsii Group?). Body not unusually compressed or setose; rostrum reaching nearly as far as distal margin of 1st antennular segment, flattened dorsally, margins abruptly delimited from and overhanging adrostral furrows; carapace without median tooth or tubercle on gastric region or strong paired acute teeth overhanging posterior ends of adrostral furrows, anterior margin mesial to orbital hoods unarmed, meeting rostral margin in concave curve, orbital hood unarmed, 2nd antennular segment twice as long as wide; basal antennal segment (basicerite) apparently armed with small, acute ventrolateral tooth not nearly reaching level of tip of stylocerite; antennal scale with lateral margin nearly straight, distolateral spine wide, overreaching or falling short of distal margin of blade; 1st pereopods with merus armed with acute distal tooth on inferior flexor margin; major chela considerably compressed, nearly 3 times as long as wide, dactyl lying in longitudinal plane of palm, not double-ended, plunger not separated from terminal tooth, palm with ill-defined notch representing “saddle” proximal to adhesive plaque, subrectangular shoulder on margin proximal to fixed finger followed distally by 2nd prominence; minor chela 6 times as long as wide, dactyl subequal to palm in length, not “balaeniceps” in either sex; 2nd pereopod with proximal carpal article considerably longer than 2nd; 3rd pereopod with dactyl subspatulate, propodus without spines on flexor margin, carpus without strong projection distally from either extensor or flexor margins, merus unarmed, ischium with movable spine; maximum carapace length to base of rostrum about 16 mm.

RANGE.—Southwest of Manila Bay, Luzon, Philippines, and off southwestern Celebes, Indonesia; 134 to 200 meters.

*31. Alpheus frontalis H. Milne Edwards, 1837

Alpheus frontalis H. Milne Edwards, 1837:356 [type locality: Australia].—D.M. and A.H. Banner, 1982:99, figs. 231,m, 25.

Alpheus latifrons A. Milne-Edwards, 1873:87 [type locality: Upolu, Western Samoa].

Betaeus utricola Richters, 1880:164, pl. 17: figs. 34, 35 [type locality: Mauritius].

DIAGNOSIS.—(Crinitus Group). Body neither unusually compressed nor densely setose; rostrum obsolescent, rostral carina rounded, extending posteriorly to base of eyes, base not abruptly delimited from adrostral furrows; carapace without median tooth or tubercle on gastric region and without flattened teeth overhanging posterior ends of adrostral furrows, anterior margin extending as vaulted shelf-like projection between orbits, adrostral furrows rather deep; 2nd antennular segment nearly 3 times as long as wide; basal antennal segment (basicerite) bearing small acute ventral tooth; antennal scale with lateral margin sinuous, distolateral spine strong, overreaching distal margin of blade; 1st pereopods with merus unarmed distally on flexor margin; major chela broadly oval in cross section, about 2 times as long as wide, dactyl lying nearly in longitudinal plane of palm, not double-ended, bearing well-developed but distally truncate plunger, palm without obvious sculpture of any kind; minor chela slightly less than 2 times as long as wide in males, 3 as long as wide in females, dactyl broadly “balaeniceps” in male, about 3 as long as palm, unmodified in female, about as long as palm; 2nd pereopod with proximal carpal article fully twice as long as 2nd; 3rd pereopod with dactyl simple, propodus bearing about 9 spines on flexor margin, carpus terminating in acute tooth on flexor margin, blunt tooth on extensor margin, merus unarmed, ischium with movable spine; maximum overall carapace length about 16 mm.

MATERIAL.—PHILIPPINES. Port Matalvi, Luzon [15°29′N, 119°56′E]; 23 Nov 1908; electric light: 1 female [5.3]. Varadero Bay, Mindoro [13°30′N, 12°59′E]; surface; 22–23 Jul 1908 (2000–0200); dip net from gangplank with electric light: 2 males [5.2, 5.3]. Sablayan Anchorage, western Mindoro [120°50′N, 120°46′E]; surface; 12 Dec 1908 (1900–2030); dip net, electric light 1 female [7.5].

RANGE.—Red Sea and eastern Africa to Japan, Philippines, Indonesia, Australia, across Pacific to the Society Islands, but not Hawaii; low tide to 130 meters (all four of the Albatross specimens were found swimming at the surface under an electric light).

MATERIAL.—PHILIPPINES. Grande Island, Subic Bay, Luzon [14°46′N, 120°14′E]; 2–6 m; scattered clumps of coral; 8 Jan 1908 (1300–1730); dynamite: 1 ovig female [5.0].

RANGE.—Kenya, Malaya, Indonesia, Philippines, and central Pacific islands.