Acanthephyra brevicarinata Hanamura, 1984

Hendrickx, Michel E. & Ríos-Elósegui, Daniela, 2014, Distribution of Acanthephyra brevicarinata Hanamura, 1984 and A. brevirostris Smith, 1885 (Crustacea: Decapoda: Caridea: Acanthephyridae), in Pacific Mexico, Zootaxa 3765 (6), pp. 593-599 : 594-596

Acanthephyra brevicarinata Hanamura, 1984

Acanthephyra brevicarinata . — Hanamura, 1983: 53, 54 (nomen nudum).

Acanthephyra brevicarinata Hanamura, 1984: 65 , figs. 1, 2; Chace, 1986: 18 (key), figs. 2d, 4d, 6c, 8c; Hendrickx & Estrada- Navarrete, 1989: 113 (list); 1996: 105: figs. 64, 65; Hendrickx, 1993: 318, table 25; 2003: 230, table 2; 2013: 444; Hendrickx & Wicksten, 2004: 140; Hendrickx & García-Guerrero, 2007: 31 –35 (larvae description).

Material examined. CICIMAR 8405, St. 17 (24º25’0”N; 112º50’30”W), Jun 4, 1984, 1 F (CL 24.81 mm), Isaacs- Kidd mid water trawl, 300 m (EMU 5559).

TALUD III, St. 10A (23º44’18”N; 107º38’36”W), Aug 18, 1991, 1 OF (CL 21.1 mm), AD, 968 m (EMU 5459A); St. 14B (24º39’12”N; 108º37’54”W), Aug 19, 1991, 1 M (CL 23.73 mm), AD, 1198 m (EMU 4429); St. 17 (24º32’54”N; 108º51’36”W), Aug 19, 1991, 1 F (CL 18.92 mm), AD, 770 m (EMU 4426); St. 20A (25º12’36”N; 109º6’3”W), Aug 24, 1991, 1 F (CL 19.9 mm), AD, 966 m (EMU 4428); St. 24A (25º45’12”N; 109º46’54”W), Aug 24, 1991, 2 F (CL 17.53–18.38 mm), AD, 1043 m (EMU 5459B).

TALUD IV, St. 19 (24º15’18”N; 108º24’6”W), Aug 25, 2000, 2 M (CL 20.59–28.35 mm), BS, 1245 m (EMU 5521A); St. 20 (24º27’24”N; 108º35’16”W), Aug 25, 2000, 1 M (CL 28.54 mm), BS, 1500–2000 m (EMU 5521B); St. 26 (24º56’24”N; 109º5’36”W), Aug 26, 2000, 2 OF (CL 22.25–22.72 mm), BS, 1200–1274 m (EMU 5546), same station 1 juvenile, BS, 1200–1274 m (EMU 5531); St. 27 (24º59’0”N; 109º12’6”W), Aug 26, 2000, NS (CL 11.7 mm), BS, 1605–1620 m (EMU 5521C); St. 33 (25º45’54”N; 109º48’6”W), Aug 27, 2000, 1 OF (CL 21.79 mm), BS, 1060–1090 m (EMU 5521D); St. 34 (25º40’41”N; 109º54’24”W), Aug 27, 2000, 1 F (CL 16.21 mm), BS, 1240 m (EMU 5521E); St. 35 (25º53’59”N; 110º11’17”W), Aug 27, 2000, 1 F (CL 16.53 mm), BS, 2000–2100 m (EMU 5521F).

TALUD V, St. 5 (22º0’57”N; 106º40’0”W), Dec 13, 2000, 2 M (CL 24.3–24.34 mm), BS, 1515–1620 m (EMU 5545A); St. 14 (23º16’20”N; 107º40’45”W), Dec 14, 2000, 1 OF (CL 22.22 mm), 2 M (CL 19.16–23.18 mm), BS, 2080–2140 m (EMU 5522A); St. 19 (24º16’24”N; 108º24’18”W), Dec 15, 2000, 1 M (CL 25.66 mm), BS, 1180– 1200 m (EMU 5522B); St. 20 (24º14’45”N; 108º35’18”W), Dec 15, 2000, 2 M (CL 25.15–25.56 mm), BS, 1470– 1525 m (EMU 5532).

TALUD VI, St. 4 (22º0’51”N; 106º34’42”W), Mar 13, 2001, 1 F (CL 24.78 mm), BS, 1190–1250 m (EMU 5545B); St. 15 (23º14’42”N; 107º30’0”W), Mar 15, 2001, 1 M (CL 27.8 mm), 1230 m, mid water trawl (EMU– 9620); St. 19 (24º16’23”N; 108º24’19”W), Mar 15, 2001, 1 F (CL 21.47 mm), 1 OF (CL 21.63 mm), BS, 1160– 1200 m (EMU 5970A); St. 20 (24º14’48”N; 108º35’11”W), Mar 15, 2001, 1 F (CL 20.9 mm), BS, 1250–1440 m (EMU 5970B); St. 26 (24º56’17”N; 109º6’39”W), Mar 16, 2001, 1 M (CL 15.87 mm), BS, 1190–1270 m (EMU 5970C).

TALUD VII, St. 4 (22º3’18”N; 106º34’42”W), Jun 5, 2001, 1 M (CL 20.61 mm), 1 F (CL 15.78 mm), 1 OF (CL 22.02 mm), BS, 1190 m (EMU 5544A); St. 5 (22º0’24”N; 106º39’54”W), Jun 5, 2001, 1 M (CL 8.09 mm), 3 F (CL 10.36–19.72 mm), 1 OF (CL 22.34 mm), BS, 1490–1520 m (EMU 5969B); St. 13B (23º30’18”N; 107º44’0”W), Jun 6, 2001, 3 M (CL 12.51–23.95 mm), 1 F (CL 14.9 mm), BS, 1400–1450 m (EMU 5544B); St. 19 (24º16’12”N; 108º23’42”W), Jun 7, 2001, 1 F (CL 16.11 mm), 2 OF (CL 21.91–23.79 mm), BS, 1160–1180 m (EMU 5544C); St. 20 (24º14’48”N; 108º35’12”W), Jun 7, 2001, 1 M (CL 24.97 mm), BS, 1480–1520 m (EMU 5969A), same station 1 M (CL 9.07 mm), 2 F (CL 8.36–8.64 mm), BS, 1480–1520 m (EMU 6036); St. 27 (25º1’30”N; 109º12’0”W), Jun 8, 2001, 1 M (CL 14.87 mm), 1 F (CL 16.12 mm), BS, 1580–1600 m (EMU 5969C); St. 33B (26º6’30”N; 110º6’42”W), Jun 9, 2001, 1 F (CL 8.91 mm), BS, 1260–1300 m (EMU 5969D); St. 34B (26º5’30”N; 110º10’30”W), Jun 9, 2001, 2 M (CL 20.02–20.97 mm), 5 F (CL 8.17–19.87mm), BS, 1500– 1520 m (EMU 5969E).

TALUD VIII, St. 9 (25º1’48”N; 110º6’54”W), Apr 17, 2005, 2 M (CL 16.81–19.53 mm), 1 F (CL 20.34 mm), BS, 1650 m (EMU 8193); St. 10 (24º58’12”N; 110º16’6”W), Apr 17, 2005, 1 OF (CL 20.28 mm), BS, 1500 m (EMU 7267); St. 15 (25º23’6”N; 110º18’24”W), Apr 18, 2005, 1 OF (CL 22.26 mm), BS, 2000 m (EMU 7286); St. 21 (26º2’18”N; 110º37’6”W), Apr 19, 2005, 1 M (CL 16.28 mm), 3 F (CL 9.8–19.49 mm), BS, 1380 m (EMU 8234); St. 22 (26º3’42”N; 110º21’18”W), Apr 19, 2005, 5 M (CL 15.36–22.1 mm), 2 F (CL 13.39–17.3 mm), BS, 2200 m (EMU 8159).

TALUD IX, St. 2 (24º38’42”N; 109º17’36”W), Nov 11, 2005, 1 F (CL 11.6 mm), 1 OF (CL 20.8 mm), BS, 2331–2394 m (EMU 8245); St. 3 (24º32’52”N; 109º29’4”W), Nov 11, 2005, 2 M (CL 16.63–23.96 mm), 1 F (CL 16.51 mm), BS, 1454–1620 m (EMU 8231); St. 14 (25º31’30”N; 110º7’24”W), Nov 15, 2005, 3 M (CL 13.97– 22.58 mm), 3 F (CL 13.97–21.56 mm), BS, 2010–2244 m (EMU 8225); St. 20B (25º58’7”N; 110º40’4”W), Nov 14, 2005, 2 M (CL 21.14–26.56 mm), BS, 1229–1343 m (EMU 8221); St. 22 (26º3’42”N; 110º20’36”W), Nov 14, 2005, 2 F (CL 8.38–18.97 mm), 1 OF (CL 21.68 mm), BS, 2214–2309 m (EMU 8256).

TALUD X, St. 6 (28º1’34”N; 112º17’25”W), Feb 10, 2007, 1 F (CL 18.4 mm), BS, 1037–1043 m (EMU 8192); St. 9 (27º52’51”N; 112º15’53”W), Feb 10, 2007, 1 M (CL 17.0 mm), 1 F (CL 12.5 mm), 1 OF (CL 19.9 mm), BS, 1205– 215 m (EMU 8189B); St. 15 (27º40’24”N; 111º39’54”W), Feb 15, 2007, 1 F (CL 18.2 mm), 3 OF (CL 19.33–22.46 mm), BS, 1528–1530 m (EMU 8189A); St. 17 (27º8’0”N; 111º44’10”W), Feb 12, 2007, 2 M (CL 17.1–17.9 mm), 1 F (CL 12.5 mm), BS, 1289–1326 m (EMU 8039A), same station 1 F (CL 8.5 mm) (EMU 8039B); St. 19 (27º13’30”N; 111º36’8”W), Feb 12, 2007, 1 M (CL 11.02 mm), 5 F (CL 9.38–18.89 mm), 2 OF (CL 21.35–22.06 mm), BS, 1786–1816 m (EMU 8040).

TALUD XII, St. 3 (16°54’35”N; 100°44’10”W), Mar 28, 2008, 4 M (CL 11.68–18.61 mm), 3 F (CL 7.06– 17.88 mm), BS, 1380–1456 m (EMU 9931); St. 5 (16º58’17”N; 100º55’12”W), Mar 28, 2008, 2 M (CL 15.01– 16.64 mm), BS, 1925–1977 m (EMU 8593); St. 8 (17º4’9”N; 101º39’16”W), Mar 29, 2008, 4 M (CL 21.36– 24.44mm), BS, 1880–1940 m (EMU 8591); St. 9 (17º10’15”N; 101º37’23”W), Mar 28, 2008, 1 M (CL 15.23 mm), 3 F (CL 12.05–16.77 mm), 1 OF (CL 25.05 mm), BS, 1392–1420 m (EMU 8488); St. 10 (17º11’18”N; 101º28’30”W), Mar 29, 2008, 4 M (CL 11.5–16.62 mm), 1 OF (CL 21.08 mm), BS, 1180–1299 m (EMU 8490); St. 13 (17°45’16”N; 102°00’29”W), Mar 30, 2008, 3 M (CL 15.17–25.15 mm), 4 F (CL 10.89–23.99 mm), BS, 1199– 1100 m (EMU 9932); St. 15 (17º25’33”N; 102º7’20”W), Mar 30, 2008, 6 M (CL 12.83–24.38 mm), 1 F (CL 14,0 2 mm), 2 OF (CL 24.27–24.67 mm), 2 NS (CL 11.8–14.38 mm), BS, 2080–2125 m (EMU 8487); St. 23 (18º33’43”N; 103º57’45”W), Apr 1, 2008, 2 OF (CL 22.11 mm), 2 NS (CL 10.85–13.75 mm), BS, 1058–1088 m (EMU 8592); St. 24 (18°28’00”N; 104°14’10”W), Apr 1, 2008, 7 M (CL 14.48–27.72 mm), 5 F (CL 10.15– 18.4mm), 1 OF (CL 23.24 mm), 1 NS (11.04 mm), BS, 1535–1542 m (EMU 9933); St. 25 (18º26’45”N; 104º16’10”W), Apr 1, 2008, 2 M (CL 16.7–26.36 mm), 1 OF (CL 17.53 mm), 1 NS (CL 12.25 mm), BS, 1858– 1879 m (EMU 8489); St. 26 (18º32’27”N; 104º28’21”W), Apr 1, 2008, 5 M (CL 10.44–21.22 mm), 3 F (CL 13.42–18.83mm), 2 OF (CL 19.74–21.99 mm), 2 NS (CL 6.78–10.06 mm), BS, 2121–2165 m (EMU 8486); St. 28 (18°50’19”N; 104°34’14”W), Apr 2, 2008, 1 M (CL 18.44 mm), 2 F (CL 10.82–15.33 mm), BS, 1101–1106 m (EMU 9934); St. 29 (19°19’37”N; 105°26’20”W), Apr 2, 2008, 1 M (CL 24.82 mm), BS, 1609–1643 m (EMU 9935); St. 30 (19º22’30”N; 105º16’18”W), Mar 26, 2008, 1 M (CL 28.25 mm), 1 F (CL 21.76 mm), 1 OF (CL 22.21 mm), 1 NS (CL 24.7 mm), BS, 1350–1380 m (EMU 8594).

TALUD XIII, St. 34 (26º3’54”N; 110º20’6”W), Jan 15, 2009, 1 F (CL 17.87 mm), BS, 2103 m (EMU 8896).

TALUD XV, St. 2 (23°12’02”N; 111°20’50”W), Aug 4, 2012, 1 F (CL 15.57 mm), BS, 1118–1150 m (EMU 9888A); St. 9 (24º25’12”N; 112º52’48”W), Jul 30, 2012, 1 OF (CL 25.23 mm), BS, 1425–1494 m (EMU 9892); St. 10 (24º20’42”N; 112º44’48”), Jul 29, 2012, 1 F (CL 15.5 mm), BS, 2088–2125 m (EMU 9888C); St. 13 (25º02’12”N; 112º54’06”W), Jul 30, 2012, 1 F (CL 21.14 mm), BS, 1210–1245 m (EMU 9888D).

Previous distribution. “Dowd Tablemount” (type locality; 13°28’N; 119°49’W), about 820 nautical miles off the west coast of the Baja California Peninsula ( Hanamura, 1984); Guaymas Basin (“Albatross” St. 3010, 27º23’45”N; 111º25’W) ( Chace, 1986); off the coast of Sinaloa ( Hendrickx & Estrada-Navarrete, 1996) and in the SE Gulf of California, off Sinaloa and Nayarit ( Hendrickx, 2003; Hendrickx & García-Guerrero, 2007); in the Gulf of California, off Mazatlán (22°47’N; 106°52’W), Sinaloa, and off Guaymas (26°45’N; 111°02’W), Sonora; off Bahía Magdalena (24°23’N; 112°17’W), SW tip of the Baja California Peninsula ( Hendrickx & Wicksten 2004).

New records. Off the West coast of the Baja California Peninsula, from off Isla Magdalena (25°02’N; 112°54’W) to a locality off Todos Santos (23°12’N; 111°20’W). Central and northern Gulf of California, with northernmost limit at 28°01’N; 112°17’W. SW coast of Mexico, from off Tenacatita, Jalisco (19°22’N; 105°16’W), to off Acapulco, Guerrero (16°58’N; 100°55’W).

General distribution. Including the new records cited in this contribution, Acanthephyra brevicarinata is now known from a large portion of the Pacific coast of Mexico, from 25°02’N, on the west coast of Baja California and 28°01’N, in the Gulf of California, to 16°58’N; off the SW coast of Mexico. Eastern Pacific, off Mexico and far out to sea (about 820 nautical miles) (ca 13°28’N; 119°49’W) (Fig. 1).

Remarks. Number of specimens of A. brevicarinata obtained in the sampling gear varied from 1 to a maximum of 14 (TALUD XII St. 24). The total number of specimens reported herein is 203. Of these, 12 could not be sexed. The rest consists of 84 males and 107 F (F:M, 1.27:1), of which 34 (32%) are ovigerous. The material examined included mostly large to medium–size specimens, and this might be related to the use of a relatively large mesh size (ca 2.0 cm internal lining net). Size (CL) in A. brevicarinata varied from 6.78 to 28.54 mm in males (average, 19.25± 5.18 mm), from 16.11 to 24.81 mm in non–ovigerous females (average, 8.22± 4.05 mm), and from 17.53 to 25.23 mm (average, 22.66± 1.97 mm) in ovigerous females.