Paraphronima gracilis Claus, 1879

Gasca, Rebeca & Hendrickx, Michel E., 2021, Pelagic amphipods (Crustacea: Amphipoda: Hyperiidea) in western Mexico. 6. Superfamily Vibilioidea. Families Paraphronimidae and Vibiliidae, Zootaxa 5071 (4), pp. 563-578 : 565-566

Paraphronima gracilis Claus, 1879

Paraphronima gracilis Claus, 1879: 7 (65)‒8 (66), pl. 1, figs. 4‒5; Siegel-Causey, 1982: 139 (key), 143; Vinogradov et al., 1996: 314‒316, fig. 126; Zeidler, 2003: 89 (key), 89‒91, fig. 37A; Brusca & Hendrickx 2005: 149 (list); García Madrigal, 2007: 143 (list); Guillén Pozo, 2007: 20 (key), 39, fig. 9, 149 (tab. 40), 178‒179 (passim); Lavaniegos & Hereu, 2009: 142 (tab. 1), 146 (tab. 2), 151 (appendix 1); Gasca et al., 2012: 126 (tab. 1); Valencia et al. 2013: 51 (tab. 1); Lavaniegos, 2014: 3‒7 (passim), 4 (tab. 1), 10 (tab. 4); 2017: 18‒24 (passim), 18 (tab. 2); 2021: 9.

Paraphronima edwardsi Bovallius, 1885: 12 .

Material examined. 9M, 10F from six localities ( Fig. 1 ). TALUD III. St. 3B (22°36’36”N, 106°35’54”W), August 17, 1991, 1F, IK from surface to 275 m ( TD, 1585 m) (ICML-EMU-12833-A); St. 19 (25°12’00”N, 109°07’00”W), August 20, 1991, 2F, I-K, surface to 410 m ( TD, 920 m) (ICML-EMU-12833-B); St. 25A1 (25°51’00”N, 109°57’00”W), August 21, 1991, 1M, IK from surface to 200 m ( TD, ca. 1320 m) (ICML-EMU-12833-C); St. 19B (25°18’24”N, 109°18’36”W), August 20, 1991, 1M, 2F, IK from surface to 600 m ( TD, 1890 m) (ICML-EMU- 12833-D). TALUD IV, St. 7 (22°00’22”N, 106°49’18”W), August 23, 2000, 6M, MN from surface to 500 m ( TD, 1970 m) (ICML-EMU-12834-A); St. 15 (23°23’30”N, 107°47’48”W), August 24, 2000, 2F, MN from surface to 1500 m ( TD, 2350 m) (ICML-EMU-12834-B). TALUD V. St. 5 (22°00’57”N, 106°40’00”W), December 13, 2000, 2M, 3F, MN from surface to ca 1400 m ( TD > 1600 m) (ECO-CH-Z-10548) .

Distribution. Cosmopolitan in tropical and subtropical water, including the Mediterranean Sea ( Vinogradov et al. 1996). In the eastern Pacific it ranges from the west coast of the Baja California Peninsula (north to 27°38’14”N) to Michoacán, including the Gulf of California, Mexico, and off Panama and Ecuador (García Madrigal 2007, Guillén Pozo, 2007, Valencia et al. 2013).

Remarks. Found mostly to 500 m depth ( Vinogradov et al. 1996), but García Madrigal (2007) recorded it from 1230‒1800 m.

Figures

FIGURE 1. Localities where Paraphronima crassipes Claus, 1879, and P. gracilis Claus, 1879 were captured during this survey.