dcsimg

Synalpheus laticeps Coutière 1905

Comprehensive Description

provided by Smithsonian Contributions to Zoology
Synalpheus laticeps Coutière, 1905

Synalpheus laticeps Coutière, 1905:874, pl. 72: fig. 11 [type locality: Male Atoll, Maldive Islands].—A.H. and D.M. Banner, 1966b:68, fig. 23.—D.M. and A.H. Banner, 1979:243, fig. 4e-i.—A.H. and D.M. Banner, 1983:100.

DIAGNOSIS.—Rostrum not reaching level of distal margin of 1st antennular segment, narrower at base than orbital teeth; 6th abdominal somite not projecting posteriorly either side of base of telson, posterior margin unarmed mesially; telson with dorsolateral spines small but distinct, anterior pair situated anterior to midlength of telson, posterior angles acute, slightly projecting; stylocerite overreaching 1st antennular segment; basal antennal segment (basicerite) with ventrolateral tooth overreaching stylocerite, dorsal tooth long, spinose, not accompanied by 2nd, proximal tooth; antennal scale with blade narrow, rarely vestigial; major chela with movable finger not appreciably overreaching fixed finger, palm terminating in subrectangular angle at level of articulation with movable finger; minor chela without patterned row of setae on extensor margin of movable finger, both fingers broadened, excavate, and terminating in 1 or more distal teeth; 2nd pereopod with 5 carpal articles; 3rd pereopod with dactyl biunguiculate, extensor tooth slightly longer and, usually, less stout than flexor tooth, segment neither excavate nor swollen on flexor margin, merus unarmed, maximum carapace length to base of rostrum probably about 4 mm.

RANGE.—Western Indian Ocean, Maldive Islands, Thailand, southern Philippines and Indonesia; in depths of less than 7 meters.

*110. Synalpheus neomeris (De Man, 1897)

Alpheus neomeris De Man, 1897:734 [part; type locality: Mergui Archipelago, Burma].

Synalpheus Gravieri Coutière, 1905:870, pl. 70: fig. 2 [type locality: the type series was recorded from 4 atolls in the Maldive Islands, Djibouti, and “mer de Chine”].

Synalpheus miscellaneus De Man, 1909a:118 [type locality: off northeastern point of Timor, Indonesia; 27–54 meters].

Synalpheus neomeris.—D.M. and A.H. Banner, 1975:357, fig. 22.—A.H. and D.M. Banner, 1983:101.—D.M. and A.H. Banner, 1985:51.

DIAGNOSIS.—Rostrum not overreaching 1st antennular segment, usually faintly upturned, narrower at base than orbital teeth; 6th abdominal somite not projecting posteriorly either side of base of telson, posterior margin unarmed mesially; telson with all dorsolateral spines situated in posterior of telson in mature specimens, posterior angles subrectangular, stylocerite overreaching 1st antennular segment; basal antennal segment (basicerite) not overreaching stylocerite, dorsal tooth acute or spinose, not accompanied by 2nd, proximal tooth; antennal scale with well-developed blade; major chela with movable finger not appreciably overreaching fixed finger, palm terminating in blunt to acute tooth at level of articulation with movable finger; minor chela without patterned row of setae on extensor margin of movable finger, each finger terminating in single tooth; 2nd pereopod with 5 carpal articles, 3rd pereopod with dactyl biunguiculate, extensor tooth less than as long and less than as stout at base as flexor tooth, segment neither excavate or swollen on flexor margin, merus without acute distal fixed tooth but armed with 1 or more stout movable spines on flexor margin; uropod with transverse articulation on lateral branch; maximum carapace length to base of rostrum about 11 mm.

MATERIAL.—PHILIPPINES. Bohol Strait, east of Cebu: sta 5413; 10°10′35″N, 124°03′15″E [77 m]; 24 Mar 1909 (1134–1140); 6′ McCormick: 4 [3.4–4.8]. 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: 2 [3.4, 10.0]; sta 5253; 7°04′48″N, 125°39′38″E; 51 m; coral; 18 May 1908 (1347–1358); 6′ Johnston oyster dredge: 4 [4.5–7.0]; sta 5254; 7°05′42″N, 125°39′42″E; 38 m; sand, coral; 18 May 1908 (1426–1431); 6′Johnston oyster dredge: 6 [4.5–7.3]. Off Jolo Island, Sulu Archipelago: sta 5137, 6°04′25″N, 120°58′30″E; 37 m; sand, shells; 14 Feb 1908 (0955–1015); 12′ Agassiz beam trawl, 2 mud bags: 1 [5.1]; sta 5141; 6°09′N, 120°58′E; 53 m; coral sand; 15 Feb 1908 (0847–0905); 12′ Agassiz beam trawl, mud bag: 2 [4.1, 5.1], 1 ovig [5.1]; sta 5145; 6°04′30″N, 120°59′30″E; 42m; coral sand, shells; 15 Feb 1908 (1344–1359); 12′ Agassiz beam trawl, mud bag: 3 [2.9–3.1]; sta 5555; 5°51′15″N, 120°58′35″E; 62 m; coarse sand; 18 Sep 1909 (1109–1113); 6′ McCormick: 1 [5.9]; sta 5557; 5°51′30″N, 121°01′00″E; 24 m; 18 Sep 1909 (1458–1503); 6′ McCormick: 2 [9.0, 10.2], 1 ovig [10.2]. 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: 4[8.1–10.6], 1 ovig [10.4]; sta 5148; 5°34′40″N, 120°47′30″E; 31 m; coral, shells; 16 Feb 1908 (1307–1325); 12′ Agassiz beam trawl, mud bag: 1 [2.0]. Off Tawitawi, Sulu Archipelago: sta 5151; 5°24′40″N, 120°27′15″E; 44 m; coarse sand, shells; 18 Feb 1908 (1307–1327); 12′ Agassiz beam trawl, mud bag: 1 ovig [4.5]; sta 5154; 5°14′50″N, 119°58′45″E; 22 m; coral sand; 19 Feb 1908 (1035–1050); 12′ Agassiz beam trawl, mud bag: 4 [2.5–9.3], 2 ovig [6.3, 9.3]; sta 5165; 4°58′20″N, 119°50′30″E [17m]; coral; 24 Feb 1908 (1319–1323); 9′ Johnston oyster dredge: 1 [8.7].

RANGE.—Suez Canal, Red Sea, eastern Africa, Persian Gulf, Thailand, Japan, Philippines, Indonesia, and Australia; shallow subtidal to 250 meters, commonly associated with alcyonarians, sometimes with sponges.

MATERIAL.—PHILIPPINES. Off Jolo Island, Sulu Archipelago: sta 5139; 6°06′N, 121°02′30″E; 37 m; coral sand; 14 Feb 1908 (1313–1317); 12′ Agassiz beam trawl, mud bag: 2 [3.8, 4.2], 1 ovig [4.2]; sta. 5142; 6°06′10″N, 121°02′40″E; 38 m; coral sand and shells; 15 Feb 1908 (1033–1044); 12′ Agassiz beam trawl, mud bag: 7 [2.5–3.6].

RANGE.—Red Sea to Japan, Philippines, Indonesia, and Australia; shallow subtidal to 70 meters.
license
cc-by-nc-sa-3.0
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