Lestrigonus schizogeneios ( Stebbing, 1888 )

Gasca, Rebeca & Hendrickx, Michel E., 2021, Pelagic amphipods (Crustacea: Amphipoda: Hyperiidea) in western Mexico. 3 Family Lestrigonidae, Zootaxa 4974 (1), pp. 169-187 : 178-179

Lestrigonus schizogeneios ( Stebbing, 1888)

Hyperia schizogeneios Stebbing, 1888: 1391 , pl. 168.

Hyperia promontorii Stebbing, 1888: 1385 pl. 166.

Hyperia zebui Stebbing, 1888: 1394 .

Lestrigonus schizogeneios — Bowman, 1973: 39; Siegel-Causey, 1992: 175 (key), 184; Vinogradov et al., 1996: 381 (key), 382, fig. 162; Zeidler, 2004: 32 (key), 33; Brusca & Hendrickx, 2005: 150 (list); García Madrigal, 2007: 150 (list); Lavaniegos & Hereu, 2009: 139–142 (passim), 142 (tab.1), 146 (tab. 2), 151 (Appendix 1); Valencia & Giraldo, 2009: 268 (tab. 1); 2011: 1492 (tab. 1); Lavaniegos, 2014: 1‒10 (passim), 4 (tab. 1), 10 (tab. 4), figs. 1, 4, 5; 2017: 13‒25 (passim), 18 (tab. 2), figs. 7, 8, 11; Gómez-Gutiérrez et al., 2014: 1019 (tab. 3).

Lestrigomus schizogeneios — Lavaniegos, 2017: 19.

Material examined. 38M, 43F, in 19 localities ( Fig. 6 ). TALUD I. St. 6 ( 23°15’54”N, 107°31’12”W), December 12, 1989, 3M, 4F, BO, from surface to ca. 200 m (TD, 1550 m) (ICML-EMU-12800A) . TALUD III. St. 6 ( 23º17’54”N, 107º30’18”W), August 18, 1991, 2F, BS, from surface to 996‒1148 (ICML-EMU-12800B); St. 10B ( 23°43’24”N, 107°39’06”W), August 18, 1991, 1M, I-K, from surface to 630 m (TD, ca. 900 m) (ICML-EMU-12800C) ; St. 19 ( 25°12’00”N, 109°07’00”W), August 20, 1991, 1M, 3F, I-K, surface to 410 m (TD, 920 m) (ECO-CH-Z-10392); St. 19B ( 25°18’24”N, 109°18’36”W), August 20, 1991, 4M, 4F, I-K, from surface to 600 m (TD, 1890 m) (ICML-EMU-12800D). TALUD IV St. 7 ( 22°00’22”N, 106°49’18”W), August 23, 2000, 3F, MN, from surface to 500 m (TD, 1970 m) (ICML-EMU-12801A) ; St. 15 ( 23°23’30”N, 107°47’48”W), August 24, 2000, 13F, MN, from surface to 1500 m (TD, 2350 m) (ICML-EMU-12801B) ; St. 29 ( 24°57’48”N, 109°37’00”W), August 27, 2000, 1M, 3F, MN, from surface to 1280 m (TD, 2080 m) (ICML-EMU-12801C) . TALUD V. St. 5 ( 22°00’57”N, 106°40’00”W), December 13, 2000, 2M, 2F, MN, from surface to ca. 1400 m (TD> 1600 m) (ECO-CH-Z-10393) . TALUD VI. St. 7 ( 22°21’39”N, 107°01’42”W), March 14, 2001, 16M, 3F, MN, from surface to 1305 m (TD, 2100 m) (ICML-EMU-12802A) ; St. 22 ( 24°17’34”N, 108°50’25”W), March 15, 2001, 1M, MN, from surface to 1410 m (TD, 1760 m) (ICML-EMU-12802B) ; St. 29 ( 25°16’24”N, 109°24’54”W), March 16, 2001, 1F, MN, from surface to 1440 m (TD, 2080 m) (ICML-EMU-12802C) . TALUD VII, St. 15B ( 23°25’06”N, 107°47’31”W), June 7, 2001, 3M, 1F, MN, from surface to 1425 m (TD, 2320 m) (ICML-EMU-12803A) ; St. 36 ( 25°42’37”N, 110°04’35”W), June 9, 2001, 2F, MN, from surface to 1390 m (TD, 2400 m) (ICML-EMU-12803B) . TALUD XI. St. 6A ( 16°58’00”N, 100°57’00”W), June 7, 2007, 4M, MN, from surface to 1400 m (TD, 1960 m) (ICML-EMU-12804A) . TALUD XII. St. 4 ( 16°59’39”N, 100°58’07”W), March 28, 2008, 1F, MN, from surface to 1200 m (TD, 1995 m) (ICML-EMU- 12804B) ; St. 15C ( 17°27’51”N, 102°10’43”W), March 31, 2008, 1M, MN, from surface to 1530 m (TD, 1880 m)

(ICML-EMU-12804C); St. 28B ( 18°56’00”N, 104°59’57”W), April 2, 2008, 2F, MN, from surface to 1425 m (TD, 2041 m) (ICML-EMU-12804D) .

Distribution. Cosmopolitan ( Vinogradov et al. 1996). In the eastern Pacific from off the Columbia River, off western Baja California, and in the Gulf of California, Mexico ( Siegel-Causey 1982, García Madrigal 2007).

Remarks. Siegel-Causey (1982) reported this species as a common inhabitant in the northern, central and southern Gulf of California. From 0 to 200 m depth ( Vinogradov et al. 1996, García Madrigal 2007). Gasca et al. (2012) found it among the most abundant species in the Mexican tropical Pacific area linked to the California Current conditions.

Figures

FIGURE 6. Localities where Lestrigonus schizogeneios was captured during this survey. x 2, x 3: two or three samples at same localities in different cruises.