identifier	taxonID	type	CVterm	format	language	title	description	additionalInformationURL	UsageTerms	rights	Owner	contributor	creator	bibliographicCitation
03E787AAFFE9AD29FF5C48E905C9FEC7.text	03E787AAFFE9AD29FF5C48E905C9FEC7.taxon	http://purl.org/dc/dcmitype/Text	http://rs.tdwg.org/ontology/voc/SPMInfoItems#GeneralDescription	text/html	en	Cranocephalus scleroticus (Streets 1878)	<div><p>Cranocephalus scleroticus (Streets, 1878)</p><p>Oxycephalus scleroticus Streets, 1878 (1879): 281‒283, pl. 2, fig. 3a, b, c.</p><p>Cranocephalus scleroticus .— Bovallius, 1890: 95‒97, pl. IV, figs. 7‒9; Brusca, 1981: 13 (list), 32 (key), 45, fig. 22b, d, f; Siegel-Causey, 1982: 343‒344; Vinogradov et al., 1996: 532‒534, fig. 230; García Madrigal, 2007: 156 (list); Gasca, 2009: 89 (tab. 1); Lavaniegos &amp; Hereu, 2009: 152 (appendix); Gasca et al., 2012: 126 (tab. 1), 127‒136 (passim); Valencia &amp; Giraldo, 2012: 1493 (tab. 1); Valencia et al., 2013: 52 (tab. 1); Zeidler, 2016: 96‒99 (passim), figs. 47‒48.</p><p>Cranocephalus goesi Bovallius, 1890: 21, fig. 5, 32, fig. 53, 38, fig. 72, 95‒97, pl. IV, figs. 7‒9.</p><p>Oxycephalus typhoides Claus, 1879: 49 .</p><p>Material examined. 2M, 1F in three localities (Fig. 1).</p><p>TALUD III. St. 19 (25°12’00”N, 109°07’00”W), August 20, 1991, 1M, I-K, surface to 410 m (TD, 920 m) (ICML-EMU-12944-A); St. 19B (25°18’24”N, 109°18’36”W), August 20, 1991, 1F, I-K from surface to 600 m (TD, 1890 m) (ICML-EMU-12944-B). TALUD VII. St. 36 (25°42’37”N, 110°04’35”W), June 9, 2001, 1M, MN from surface to 1390 m (TD, 2400 m) (ECOSUR-10557) .</p><p>Distribution. Circumtropical, from 40°N to 40°S. In the eastern Pacific from Alaska to Colombia (Vinogradov et al. 1996, García Madrigal 2007, Valencia &amp; Giraldo 2012, this study).</p><p>Remarks. The only female collected in this study (7 mm length) features the rounded head as illustrated in Shih &amp; Chen (1995).</p><p>According to Siegel-Causey (1982), C. scleroticus was very rare in the Gulf of California, where it was found only in the northern Gulf. Records in our study are all from the southern Gulf (Fig. 1). Lavaniegos &amp; Hereu (2009) reported this species from the Mexican portion of the California Current.</p></div>	https://treatment.plazi.org/id/03E787AAFFE9AD29FF5C48E905C9FEC7	Public Domain	No known copyright restrictions apply. See Agosti, D., Egloff, W., 2009. Taxonomic information exchange and copyright: the Plazi approach. BMC Research Notes 2009, 2:53 for further explanation.		MagnoliaPress via Plazi	Gasca, Rebeca;Hendrickx, Michel E.	Gasca, Rebeca, Hendrickx, Michel E. (2022): Pelagic amphipods (Crustacea: Amphipoda: Hyperiidea) in western Mexico. 7 Superfamily Platysceloidea. Family Oxycephalidae. Zootaxa 5105 (2): 219-236, DOI: 10.11646/zootaxa.5105.2.3
03E787AAFFE8AD29FF5C4CA404DDFB83.text	03E787AAFFE8AD29FF5C4CA404DDFB83.taxon	http://purl.org/dc/dcmitype/Text	http://rs.tdwg.org/ontology/voc/SPMInfoItems#GeneralDescription	text/html	en	Glossocephalus milneedwardsi Bovallius 1887	<div><p>Glossocephalus milneedwardsi Bovallius, 1887</p><p>Glossocephalus Milne-Edwardsi Bovallius, 1887: 35 .</p><p>Glossocephalus milneedwardsi .— Brusca, 1981: 12 (list), 32 (key), 45, fig. 22a, b; Siegel-Causey, 1992: 345‒346; Vinogradov et al., 1996: 529, fig. 229; García Madrigal, 2007: 156 (list); Guillén Pozo, 2007: 18 (key), 106‒108, fig. 37; Valencia &amp; Giraldo, 2009: 268 (tab. 1); Gasca, 2009: 89 (tab. 1); Lavaniegos &amp; Hereu, 2009: 142 (tab. 1), 152 (appendix); Gasca et al., 2012: 126 (tab. 1); Zeidler, 2016: 86‒89 (passim), figs. 41‒42, 89 (key); Violante-Huerta et al., 2021: 81 (tab. 1).</p><p>Elsia indica Giles, 1890: 250‒251 .</p><p>Material examined. 1M in one locality (Fig. 1).</p><p>TALUD IV. St. 22 (24°17’20”N, 108°50’30”W), August 26, 2000, 1M, MN from surface to 1325 m (TD, ca. 1800 m) (ICML-EMU-12945) .</p><p>Distribution. Circumtropical, from 30°N to 40°S; Mediterranean and Red Seas (Vinogradov et al. 1996). In the eastern Pacific from California to the Galapagos Islands (García Madrigal 2007, this study).</p><p>Remarks. Only two species of Glossocephalus are known to date, and the male reported herein fits well with the characteristics of G. milneedwardsi, including the typical eyes of this species.</p><p>Another rare species in the Gulf of California, reported by Siegel-Causey (1992) from both the northern and southern Gulf, but only in the southern Gulf in our study (Fig. 1). Lavaniegos &amp; Hereu (2009) reported this species from the Mexican portion of the California Current .</p></div>	https://treatment.plazi.org/id/03E787AAFFE8AD29FF5C4CA404DDFB83	Public Domain	No known copyright restrictions apply. See Agosti, D., Egloff, W., 2009. Taxonomic information exchange and copyright: the Plazi approach. BMC Research Notes 2009, 2:53 for further explanation.		MagnoliaPress via Plazi	Gasca, Rebeca;Hendrickx, Michel E.	Gasca, Rebeca, Hendrickx, Michel E. (2022): Pelagic amphipods (Crustacea: Amphipoda: Hyperiidea) in western Mexico. 7 Superfamily Platysceloidea. Family Oxycephalidae. Zootaxa 5105 (2): 219-236, DOI: 10.11646/zootaxa.5105.2.3
03E787AAFFEFAD2EFF5C4DF60328FB23.text	03E787AAFFEFAD2EFF5C4DF60328FB23.taxon	http://purl.org/dc/dcmitype/Text	http://rs.tdwg.org/ontology/voc/SPMInfoItems#GeneralDescription	text/html	en	Leptocotis tenuirostris (Claus 1871)	<div><p>Leptocotis tenuirostris (Claus, 1871)</p><p>Oxycephalus tenuirostris Claus, 1871: 155 .</p><p>Leptocotis tenuirostris . — Siegel-Causey, 1982: 348‒349; Vinogradov et al., 1996: 522, fig. 226; García Madrigal, 2007: 157 (list); Gasca, 2009: 89 (tab. 1); Gasca et al., 2012: 126 (tab. 1); Valencia et al., 2013: 52 (tab. 1); Zeidler, 2016: 80‒82 (passim), figs. 37‒38; Violante-Huerta et al., 2021: 81 (tab. 1).</p><p>Leptocotis ambobus Stebbing, 1888: 1594 .</p><p>Leptocotis spinifera Streets, 1877: 137‒138 .</p><p>Material examined. 6M, 9F in seven localities (Fig. 1).</p><p>TALUD III. St. 3B (22°36’36”N, 106°35’54”W), August 17, 1991, 1M, 4F, I-K from surface to 275 m (TD, 1585 m) (ICML-EMU-12946-A); St. 19B (25°18’24”N, 109°18’36”W), August 20, 1991, 1M, 2F, I-K from surface to 600 m (TD, 1890 m) (ICML-EMU-12946-B); St. 25A2 (25°50’54”N, 109°56’54”W), August 21, 1991, 1F, I-K from surface to 230 m (TD, ca. 1200 m) (ICML-EMU-12946-C). TALUD V. St. 5 (22°00’57”N, 106°40’00”W), December 13, 2000, 2M, 1F, MN from surface To ca. 1400 m (TD&gt; 1600 m) (ECOSUR-10558) . TALUD VI. St. 15 (23°14’42”N, 107°30’W), March 14, 2001, 1M, MN, surface to 1300 m (TD, 2390 m) (ICML-EMU-12947) . TALUD VII. St. 15 B (23°25’06”N, 107°47’31”N), June 7, 2001, 1M, MN from surface to 1425 m (TD, 2320 m) (ICML-EMU-12948) . TALUD XII. St. 15C (17°27’51”N, 102°10’43”W), March 31, 2008, 1F, MN from surface to 1530 m (TD, 1880 m) (ICML-EMU-12949) .</p><p>Distribution. Cosmopolitan, between 46°N and 41°S in all oceans; Mediterranean and Red Seas. In the eastern Pacific from California to Chile (Vinogradov et al. 1996, García Madrigal 2007, this study).</p><p>Remarks. This species was recognized by the typical shape of the rostrum, which is different between males and females, the long and characteristic urosoma, and the shape and size of pereopods I to III and of their corresponding coxae. Adult females were about 20 % smaller than adult males.</p><p>According to Siegel-Causey (1982), Leptocotis tenuirostris was very rare in the Gulf of California and found in two localities only, both at the entrance of the Gulf. Our material was roughly found in the same area, although more frequently (6 localities) and also off SW Mexico (Fig. 1). Although recorded in California, it has not been reported in the Mexican portion of the California Current by Lavaniegos &amp; Hereu (2009) and Lavaniegos (2014).</p></div>	https://treatment.plazi.org/id/03E787AAFFEFAD2EFF5C4DF60328FB23	Public Domain	No known copyright restrictions apply. See Agosti, D., Egloff, W., 2009. Taxonomic information exchange and copyright: the Plazi approach. BMC Research Notes 2009, 2:53 for further explanation.		MagnoliaPress via Plazi	Gasca, Rebeca;Hendrickx, Michel E.	Gasca, Rebeca, Hendrickx, Michel E. (2022): Pelagic amphipods (Crustacea: Amphipoda: Hyperiidea) in western Mexico. 7 Superfamily Platysceloidea. Family Oxycephalidae. Zootaxa 5105 (2): 219-236, DOI: 10.11646/zootaxa.5105.2.3
03E787AAFFEFAD2FFF5C481605E0FB6F.text	03E787AAFFEFAD2FFF5C481605E0FB6F.taxon	http://purl.org/dc/dcmitype/Text	http://rs.tdwg.org/ontology/voc/SPMInfoItems#GeneralDescription	text/html	en	Oxycephalus clausi Bovallius 1887	<div><p>Oxycephalus clausi Bovallius, 1887</p><p>Oxycephalus clausi Bovallius, 1887: 35‒36; Brusca, 1981: 12 (list), 33 (key), 44‒45, fig. 20a, 20e; Siegel Causey, 1982: 330 (key), 331; Vinogradov et al., 1996: 504, fig. 219; Zeidler, 1999: 394 (key), 411‒416, figs. 1C, 12‒15; 2016: 73 (passim), 76 (key); García Madrigal, 2007: 157 (list); Guillén Pozo, 2007: 18 (key), 98‒100, fig. 34; Valencia &amp; Giraldo, 2009: 268 (tab. 1); 2012: 1493 (tab. 1); Gasca, 2009: 89 (tab. 1); Lavaniegos &amp; Hereu, 2009: 142 (tab. 1), 146 (tab. 2), 152 (appendix); Gasca et al., 2012: 126 (tab. 1), 127‒134 (passim), 132 (tab. 3), 133 (tab. 4), 134 (tab. 5), 135 (tab. 6); Lavaniegos, 2014: 5 (tab. 1); Valencia et al., 2013: 52 (tab. 1); Violante-Huerta et al., 2021: 81 (tab. 1).</p><p>Oxycephalus erythraeus Cecchini, 1929: 482‒483, pl. 2.</p><p>Material examined. 50M, 102F in 24 localities (Fig. 2).</p><p>TALUD I. St. 6 (23°15’54”N, 107°31’12”W), December 12, 1989, 1M, BO, from surface to 1550 m (TD&gt; 2000 m) (ICML-EMU-12950). TALUD III. St. 3B (22°36’36”N, 106°35’54”W), August 17, 1991, 1M, 4F, I-K from surface to 275 m (TD, 1585 m) (ICML-EMU-12951-A); St. 5 (23°22’N, 107°10’W), August 24, 1991, 1F, I-K, from surface to 365 m (TD, 698 m) (ICML-EMU-12951-B); St. 6 (23º17’54”N, 107º30’18”W), August 18, 1991, 1F, AD from surface to 996‒1148 (ICML-EMU-12951-C); St. 10B (23°43’24”N, 107°39’06”W), August 18, 1991, 3F, I-K from surface to 630 m (TD, ca. 900 m) (ICML-EMU-12951-D); St. 19 (25°12’00”N, 109°07’00”W), August 20, 1991, 2M, I-K, surface to 410 m (TD, 920 m) (ICML-EMU-12952-A); St. 19B (25°18’24”N, 109°18’36”W), August 20, 1991, 1M, 4F, I-K from surface to 600 m (TD, 1890 m) (ICML-EMU-12952-B); St. 25A1 (25°51’00”N, 109°57’00”W), August 21, 1991, 4M, 3F, I-K from surface to ca. 200 m (TD, 1280-1360 m) (ICML-EMU-12952-C); St. 25A2 (25°50’54”N, 109°56’54”W), August 21, 1991, 1M, 4F, I-K from surface to 230 m (TD, ca. 1200 m) (ICML-EMU-12952-D). TALUD IV St. 7 (22°00’22”N, 106°49’18”W), August 23, 2000, 4M, 11F, MN from surface to 500 m (TD, 1970 m) (ECOSUR-10559); St. 15 (23°23’30”N, 107°47’48”W), August 24, 2000, 2M, 2F, MN from surface to 1500 m (TD, 2350 m) (ICML-EMU-12953-A); St. 22 (24°17’20”N, 108°50’30”W), August 26, 2000, 5M, 3F, MN from surface to 1325 m (TD, ca. 1800 m) (ICML-EMU-12953-B); St. 25A2 (25°50’54”N, 109°56’54”W), August 21, 2000, 3F, I-K from surface to 230 m (TD, ND) (ICML-EMU- 12954-A); St. 36 (25°51’59”N, 110°11’00”W), August 27, 2000, 1M, 1F, MN from surface to ca. 1300 m (TD, 2100 m) (ICML-EMU-12954-B) . TALUD V. St. 5 (22°00’57”N, 106°40’00”W), December 13, 2000, 7M, 9F, MN from surface to ca. 1400 m (TD&gt; 1600 m) (ICML-EMU-12955-A); St. 29 (25°14’36”N, 109°24’15”W), December 17, 2000, 2F, MN from surface to 1290 m (TD, 2040 m) (ICML-EMU-12955-B) . TALUD VI. St. 7 (22°21’39”N, 107°01’42”W), March 14, 2001, 19M, 40F, MN from surface to 1305 m (TD, 2100 m) (ICML-EMU-12956); St. 15 (23°14’42”N, 107°30’W), March 14, 2001, 1M, 1F, MN, surface to 1300 m (TD, 2390 m) (ICML-EMU- 12957-A); St. 22 (24°17’34”N, 108°50’25”W), March 15, 2001, 2M, 1F, MN from surface to 1410 m (TD, 1760 m) (ICML-EMU-12957-B); 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-12957-C) . TALUD XI. St. 6A (16°58’00”N, 100°57’00”W), June 7, 2007, 1M, 1F, MN from surface to 1400 m (TD, 1960 m) (ICML-EMU-12958-A); St. 19B (17°56’00”N, 103°10’00”W), June 9, 2007, 1M, 3F, MN from surface to 1490 m (TD, 1750 m) (ICML-EMU-12958-B) . TALUD XII. St. 4 (16°59’39”N, 100°58’07”W), March 28, 2008, 3F, MN from surface to 1200 m (TD, 1995 m) (ICML-EMU-12959); St. 15C (17°27’51”N, 102°10’43”W), March 31, 2008, 1M, 4F, MN from surface to 1530 m (TD, 1880 m) (ICML-EMU- 12960-A); St. 28B (18°56’00”N, 104°59’57”W), April 2, 2008, 1M, 1F, MN from surface to 1425 m (TD, 2041 m) (ICML-EMU-12960-B) .</p><p>Distribution. Circumtropical and in the Mediterranean Sea. In the eastern Pacific from California to Costa Rica, Panama, Colombia, and Chile (Vinogradov et al. 1996, García Madrigal 2007, Valencia &amp; Giraldo 2009, Valencia et al., 2013, Violante-Huerta et al. 2021, this study).</p><p>Remarks. Oxycephalus clausi is easily recognized for the presence of a medial tooth on the ventral margin of pleonites 1‒3, and by the shape of the anterodistal corner of the carpus gnathopods 1 and 2 which are produced in a sharp point.</p><p>Siegel-Causey (1982) reported Oxycephalus clausi as common in the Gulf of California, where it was collected in the northern, central and southern Gulf. Our results indicated a similar pattern (Fig. 2). In the Mexican portion of the California Current, it has been reported as rare by Lavaniegos &amp; Hereu (2009) and by Lavaniegos (2014; 7.5% of the samples). It inhabits predominantly in surface waters (Zeidler 1999).</p></div>	https://treatment.plazi.org/id/03E787AAFFEFAD2FFF5C481605E0FB6F	Public Domain	No known copyright restrictions apply. See Agosti, D., Egloff, W., 2009. Taxonomic information exchange and copyright: the Plazi approach. BMC Research Notes 2009, 2:53 for further explanation.		MagnoliaPress via Plazi	Gasca, Rebeca;Hendrickx, Michel E.	Gasca, Rebeca, Hendrickx, Michel E. (2022): Pelagic amphipods (Crustacea: Amphipoda: Hyperiidea) in western Mexico. 7 Superfamily Platysceloidea. Family Oxycephalidae. Zootaxa 5105 (2): 219-236, DOI: 10.11646/zootaxa.5105.2.3
03E787AAFFEEAD2CFF5C48130572FA28.text	03E787AAFFEEAD2CFF5C48130572FA28.taxon	http://purl.org/dc/dcmitype/Text	http://rs.tdwg.org/ontology/voc/SPMInfoItems#GeneralDescription	text/html	en	Oxycephalus latirostris Claus 1879	<div><p>Oxycephalus latirostris Claus, 1879</p><p>Oxycephalus latirostris Claus, 1879a: 193 (47); Brusca, 1981: 12 (list); 33 (key), 45, fig. 20i‒j; Vinogradov et al., 1996: 501 (key), 506, fig. 220; Zeidler, 1999: 394 (key), 403‒411, figs. 1B, 7‒11; 2016: 73, 76 (key); Gasca, 2009: 89 (tab. 1); Lavaniegos &amp; Hereu, 2009: 152 (appendix); Gasca et al., 2012: 126 (tab. 1).</p><p>Oxycephalus pectinatus Bovallius, 1887:36 .</p><p>Oxycephalus notabilis Spandl, 1924: 32–34 .</p><p>Oxycephalus longipes Spandl, 1927: 181‒182, fig. 14.</p><p>Oxycephalus mancinii Cecchini, 1929: 483–484 .</p><p>Material examined. 1M in one locality (Fig. 2).</p><p>TALUD III. St. 19B (25°18’24”N, 109°18’36”W), August 20, 1991, 1M, I-K from surface to 600 m (TD, 1890 m) (ICML-EMU-12961) .</p><p>Distribution. A rare species, with a worldwide distribution, preferring tropical waters. Not recorded from the Mediterranean. In the eastern Pacific it has been recorded in the Mexican section of the California Current and off Costa Rica (Lavaniegos &amp; Hereu 2009, Gasca 2009). Occurring in the SE Gulf of California, Mexico (this study).</p><p>Remarks. A single adult male in perfect conditions was collected during this survey. Oxycephalus latirostris is distinguished from the other two species of the genus by the shape of the cutting-edge of the carpus of gnathopods 1 and 2 which possesses a row of conspicuous teeth. This unique specimen features the dorsal notch characteristic of mature specimens, as illustrated by Zeidler (1999).</p><p>A relatively uncommon species, mostly found in surface waters. According to Zeidler (1999), Fage (1960) examined the extensive collections of the ‘Dana’ expedition and found that, although specimens were obtained from depths to 2000 m, the species was most abundant at 20 m.</p><p>Oxycephalus latirostris was not collected by Siegel-Causey (1982) in the Gulf of California and not cited by García Madrigal (2007) for the eastern tropical Pacific. Records in the region are by Gasca (2009; Costa Rica), Lavaniegos &amp; Hereu (2009; California Current), and Gasca et al. (2012). This species was extremely rare in our survey: one male only in one locality (Fig. 3). Barkhatov et al. (1999) included O. latirostris in the group of “pure tropical species, never penetrating the Subtropical Frontal Zone”.</p></div>	https://treatment.plazi.org/id/03E787AAFFEEAD2CFF5C48130572FA28	Public Domain	No known copyright restrictions apply. See Agosti, D., Egloff, W., 2009. Taxonomic information exchange and copyright: the Plazi approach. BMC Research Notes 2009, 2:53 for further explanation.		MagnoliaPress via Plazi	Gasca, Rebeca;Hendrickx, Michel E.	Gasca, Rebeca, Hendrickx, Michel E. (2022): Pelagic amphipods (Crustacea: Amphipoda: Hyperiidea) in western Mexico. 7 Superfamily Platysceloidea. Family Oxycephalidae. Zootaxa 5105 (2): 219-236, DOI: 10.11646/zootaxa.5105.2.3
03E787AAFFEDAD2DFF5C4B45036CFE0E.text	03E787AAFFEDAD2DFF5C4B45036CFE0E.taxon	http://purl.org/dc/dcmitype/Text	http://rs.tdwg.org/ontology/voc/SPMInfoItems#GeneralDescription	text/html	en	Rhabdosoma armatum (H. Milne Edwards 1840)	<div><p>Rhabdosoma armatum (H. Milne Edwards, 1840)</p><p>Oxycephalus armatus H. Milne Edwards, 1840: 101 .</p><p>Rhabdosoma armatum .— Brusca, 1981: 12 (list), 32 (key), fig. 21b; Siegel-Causey, 1982: 350 (key), 351; Vinogradov et al., 1996: 536 (key), 536‒540, fig. 231; García Madrigal, 2007: 157 (list); Gasca, 2009: 89 (tab. 1); Lavaniegos &amp; Hereu, 2009: 152 (appendix); Zeidler, 2016: 76‒79 (passim), figs. 35, 36A, 36Md, 36Mxp, 79 (key).</p><p>Material examined. 2F in two localities (Fig. 3).</p><p>TALUD I. St. 5 (ca. 23°16’ N, 107°31’W), December 11, 1989, 1F, BO from surface to ca. 200 m (TD&gt; 1500 m) (ICML-EMU-12962); St. 6 (23°15’54”N, 107°31’12”W), December 12, 1989, 1F, BO, from surface to 1550 m (TD&gt; 2000 m) (ICML-EMU-12963) .</p><p>Distribution. Tropical and subtropical waters in the Pacific, Atlantic, and Indian Oceans. In the eastern Pacific from California to Peru (Vinogradov et al. 1996, García Madrigal 2007, this study).</p><p>Remarks. Species of Rhabdosoma have an easily recognized slender and elongated body. Rhabdosoma armatum can be distinguished mainly by the shape and proportions of the telson, with double urosomite, and uropods.</p><p>Most commonly found in 25‒50 m depth (Vinogradov et al. 1996). Rare in the southern Gulf of California and always present in surface waters (Siegel-Causey 1982). Also recorded in the Mexican portion of the California Current (Lavaniegos &amp; Hereu 2009). Another rare species (two specimens in two localities) in our survey (Fig. 3).</p></div>	https://treatment.plazi.org/id/03E787AAFFEDAD2DFF5C4B45036CFE0E	Public Domain	No known copyright restrictions apply. See Agosti, D., Egloff, W., 2009. Taxonomic information exchange and copyright: the Plazi approach. BMC Research Notes 2009, 2:53 for further explanation.		MagnoliaPress via Plazi	Gasca, Rebeca;Hendrickx, Michel E.	Gasca, Rebeca, Hendrickx, Michel E. (2022): Pelagic amphipods (Crustacea: Amphipoda: Hyperiidea) in western Mexico. 7 Superfamily Platysceloidea. Family Oxycephalidae. Zootaxa 5105 (2): 219-236, DOI: 10.11646/zootaxa.5105.2.3
03E787AAFFECAD2DFF5C4CF30769FB0D.text	03E787AAFFECAD2DFF5C4CF30769FB0D.taxon	http://purl.org/dc/dcmitype/Text	http://rs.tdwg.org/ontology/voc/SPMInfoItems#GeneralDescription	text/html	en	Rhabdosoma brevicaudatum Stebbing 1888	<div><p>Rhabdosoma brevicaudatum Stebbing, 1888</p><p>Rhabdosoma brevicaudatum Stebbing, 1888: 350 (key), 357; Brusca, 1981: 12 (list), 32 (key), fig. 21d; Siegel-Causey, 1982: 357; Vinogradov et al., 1996: 536 (key), 540‒541, fig. 233; García Madrigal, 2007: 157 (list); Gasca, 2009: 89 (tab. 1); Lavaniegos &amp; Hereu, 2009: 152 (appendix); Lavaniegos, 2014: 5 (tab. 1); Valencia et al., 2013: 52 (tab. 1); Zeidler, 2016: 79 (passim), fig. 36D, 80 (key); Violante-Huerta et al., 2021: 81 (tab. 1), 84‒85, fig. 2C.</p><p>Material examined. 4F in one locality (Fig. 3).</p><p>TALUD V. St. 5 (22°00’57”N, 106°40’00”W), December 13, 2000, 4F, MN from surface to ca. 1400 m (TD&gt; 1600 m) (ICML-EMU-12964) .</p><p>Distribution. Subtropical Pacific Ocean, Atlantic Ocean from equator to 40°N; Mediterranean Sea. In the eastern Pacific from California to Costa Rica and Panama (García Madrigal 2007, Valencia et al. 2013, Violante-Huerta et al. 2021, this study).</p><p>Remarks. The specimens identified as R. brevicaudatum have a very small article on top of callynophore, smaller than in Zeidler’s (2016) key, the telson length is about 1/3 of the length of the double urosomite and does not reach the tip of uropod 2. The specimens examined are very similar to those of R. minor examined herein. Males of this species are not kown.</p><p>Reported as rare in the central and southern Gulf of California by Siegel-Causey (1982), a pattern confirmed during our study (Fig. 3). Also present in the Mexican portion of the California Current (Lavaniegos &amp; Hereu 2009, Lavaniegos 2014).</p></div>	https://treatment.plazi.org/id/03E787AAFFECAD2DFF5C4CF30769FB0D	Public Domain	No known copyright restrictions apply. See Agosti, D., Egloff, W., 2009. Taxonomic information exchange and copyright: the Plazi approach. BMC Research Notes 2009, 2:53 for further explanation.		MagnoliaPress via Plazi	Gasca, Rebeca;Hendrickx, Michel E.	Gasca, Rebeca, Hendrickx, Michel E. (2022): Pelagic amphipods (Crustacea: Amphipoda: Hyperiidea) in western Mexico. 7 Superfamily Platysceloidea. Family Oxycephalidae. Zootaxa 5105 (2): 219-236, DOI: 10.11646/zootaxa.5105.2.3
03E787AAFFECAD22FF5C49F50577FE57.text	03E787AAFFECAD22FF5C49F50577FE57.taxon	http://purl.org/dc/dcmitype/Text	http://rs.tdwg.org/ontology/voc/SPMInfoItems#GeneralDescription	text/html	en	Rhabdosoma minor Fage 1954	<div><p>Rhabdosoma minor Fage, 1954</p><p>Rhabdosoma minor Fage, 1954: 661; Brusca, 1981: 12 (list), 32 (key), fig. 21e; Siegel Causey, 1982: 350 (key), 359; Vinogradov et al., 1996: 536 (key), 541‒544, fig. 234; García Madrigal, 2007: 158 (list); Gasca, 2009: 89 (tab. 1); Lavaniegos &amp; Hereu, 2009: 152 (appendix); Gasca et al., 2012: 126 (tab. 1), 127‒136 (passim); Lavaniegos, 2014: 5 (tab. 1); Valencia et al., 2013: 52 (tab. 1); Zeidler, 2016: 78‒79 (passim), fig. 36C, 80 (key); Violante-Huerta et al., 2021: 81 (tab. 1), 85‒86, fig. 2D.</p><p>Material examined. 9F in four localities (Fig. 3).</p><p>TALUD I. St. 6 (23°15’54”N, 107°31’12”W), December 12, 1989, 1F, BO from surface to ca. 200 m (TD, 1550 m) (ICML-EMU-12965) . TALUD VI. St. 7 (22°21’39”N, 107°01’42”W), March 14, 2001, 6F, MN from surface to 1305 m (TD, 2100 m) (ICML-EMU-12966); St. 29 (25°16’24”N, 109°24’54”W), March 16, 2001, 1F, MN from surface to 1440 m (TD, 2080 m) (ECOSUR-10560); St. 36(2) (25°53’15”N, 110°10’10”W), 1F, MN, from surface to 1360 m (TD, ca. 2000 m) (ICML-EMU-12967) .</p><p>Distribution. Circumtropical. In the eastern Pacific from California to Costa Rica and Panama (García Madrigal 2007, Valencia et al. 2013, Violante-Huerta et al. 2021, this study).</p><p>Remarks. The telson length of the specimens identified herein was variable, but always around 1/2 the length of the double urosomite. In some specimens, the telson could reach (as described for this species) or not the tip of the uropod 2 (as in R. brevicaudatum). However, none of the examined specimens possess a small segment in the tip of the callynophore, a character specific of R. brevicauda tum. Males of this species are not kown.</p><p>The exact position of the type locality is unknown. Based on the morphological similarity and the allopatric distribution between R. brevicaudatum and R. minor, Vilogranov et al. (1992) suggested that they could be considered as subspecies. Zeidler (1996: 69), however, stated that “It is sometimes difficult to distinguish between these two species as the length of the telson seems to vary, and Vinogradov et al. (1982) suspect that they may even be synonymous. However, in all the specimens that were examined the first antennae of R. brevicaudatum consist of the basal article, callynophore, and one small terminal article while in R. minor the first antennae are like those of female R. whitei, consisting of just the basal article, and callynophore, although, the callynophore seems to have an incomplete article proximally, thus approaching the condition found in female R. armatum ”.</p><p>Rhabdosoma minor was reported as a rare species in the Gulf of California by Siegel-Causey (1982), although it was found in the northern, central and southern Gulf. It has also been reported for the Mexican portion of the California Current by Lavaniegos &amp; Hereu (2009) and Lavaniegos (2014). Our data show a rather wide distribution pattern in the Gulf of California (Fig. 3), but with few specimens.</p></div>	https://treatment.plazi.org/id/03E787AAFFECAD22FF5C49F50577FE57	Public Domain	No known copyright restrictions apply. See Agosti, D., Egloff, W., 2009. Taxonomic information exchange and copyright: the Plazi approach. BMC Research Notes 2009, 2:53 for further explanation.		MagnoliaPress via Plazi	Gasca, Rebeca;Hendrickx, Michel E.	Gasca, Rebeca, Hendrickx, Michel E. (2022): Pelagic amphipods (Crustacea: Amphipoda: Hyperiidea) in western Mexico. 7 Superfamily Platysceloidea. Family Oxycephalidae. Zootaxa 5105 (2): 219-236, DOI: 10.11646/zootaxa.5105.2.3
03E787AAFFE3AD20FF5C48C60282FE2B.text	03E787AAFFE3AD20FF5C48C60282FE2B.taxon	http://purl.org/dc/dcmitype/Text	http://rs.tdwg.org/ontology/voc/SPMInfoItems#GeneralDescription	text/html	en	Rhabdosoma whitei Spence Bate 1862	<div><p>Rhabdosoma whitei Spence Bate, 1862</p><p>Rhabdosoma whitei Spence Bate, 1862: 345‒346, pl. LIV, fig. 7; Brusca, 1981: 12 (list), 32 (key), fig. 2c; Siegel-Causey, 1982: 350 (key), 353‒354; Vinogradov et al., 1996: 536 (key), 538-540, fig. 232; García Madrigal, 2007: 158 (list); Guillén Pozo, 2007: 17 (key), 109‒110, fig. 38; Gasca, 2009: 89 (tab. 1); Lavaniegos &amp; Hereu, 2009: 142 (tab. 1),152 (appendix); Gasca et al., 2012: 126 (tab. 1), 133 (tab. 4); Valencia &amp; Giraldo, 2012: 1493 (tab. 1); Lavaniegos, 2014: 3, 5 (tab. 1); 2017: 21; Valencia et al., 2013: 52 (tab. 1); Zeidler, 2016: 79 (passim), fig. 36B, 36A2, 80 (key); Violante-Huerta et al., 2021: 81 (tab. 1), 86, fig. 2E.</p><p>Material examined. 45M, 76F, in 20 localities (Fig. 4).</p><p>TALUD III. St. 3B (22°36’36”N, 106°35’54”W), August 17, 1991, 2F, I-K from surface to 275 m (TD, 1585 m) (ICML-EMU-12968-A); St. 5 (23°22’N, 107°10’W), August 24, 1991, 1F, I-K, from surface to 365 m (TD, 698 m) (ICML-EMU-12968-B); St. 10B (23°43’24”N, 107°39’06”W), August 18, 1991, 2M, 1F, I-K from surface to 630 m (TD, ca. 900 m) (ICML-EMU-12968-C); St. 19 (25°12’00”N, 109°07’00”W), August 20, 1991, 1M, 2F, I-K, surface to 410 m (TD, 920 m) (ECOSUR-10561); St. 19B (25°18’24”N, 109°18’36”W), August 20, 1991, 3M, 4F, I-K from surface to 600 m (TD, 1890 m) (ICML-EMU-12969-A); St. 25A1 (25°51’00”N, 109°57’00”W), August 21, 1991, 1M, 1F, I-K from surface to 200 m (TD, 1280‒1360 m) (ICML-EMU-12969-B); St. 25A2 (25°50’54”N, 109°56’54”W), August 21, 1991, 2M, 1F, I-K from surface to 230 m (TD, ca. 1200 m) (ICML-EMU-12969-C). TALUD IV St. 7 (22°00’22”N, 106°49’18”W), August 23, 2000, 2M, 4F, MN from surface to 500 m (TD, 1970 m) (ICML-EMU-12970-A); St. 15 (23°23’30”N, 107°47’48”W), August 24, 2000, 3F, MN from surface to 1500 m (TD, 2350 m) (ICML-EMU-12970-B; St. 22 (24°17’20”N, 108°50’30”W), August 26, 2000, 1M, 3F, MN from surface to 1325 m (TD, aprox. 1800 m) (ICML-EMU-12971-A); St. 29 (24°57’48”N, 109°37’00”W), August 27, 2000, 1M, MN from surface to 1280 m (TD, 2080 m) (ICML-EMU-12971-B) . TALUD V. St. 5 (22°00’57”N, 106°40’00”W), December 13, 2000, 1M, 1F, MN from surface to 1400 m (TD&gt; 1600 m) (ICML-EMU-12972-A); St. 29 (25°14’36”N, 109°24’15”W), December 17, 2000, 1F, MN from surface to 1290 m (TD, 2040 m) (ICML-EMU- 12972-B); St. 36. (25°54’30”N, 110°11’24”W), December 17, 2000, 1M, 2F, MN from surface to 1340 m (TD, 1990 m) (ICML-EMU-12972-C) . TALUD VI. St. 7 (22°21’39”N, 107°01’42”W), March 14, 2001, 23M, 45F, MN from surface to 1305 m (TD, 2100 m) (ICML-EMU-12973-A); St. 15 (23°14’42”N, 107°30’00”W), March 14, 2001, 3M, 2F, MN from surface to 1230 m (TD, 2390 m) (ICML-EMU-12973-B); St. 22 (24°17’34”N, 108°50’25”W), March 15, 2001, 1M, 2F, MN from surface to 1410 m (TD, 1760 m) (ICML-EMU-12973-C) . TALUD VII. St. 22 (24°21’08”N, 108°55°14” W), June 7, 2001, 1M, MN from surface to 1415 m (TD, 2000 m) (ICML-EMU- 12974) . TALUD IX, St. 7 (25°11’30”N, 109°41’06”W), November 15, 2005, 1M, MN, surface to 1510 m (TD, 2377 m) (ICML-EMU-12975-A) . TALUD X, St. 11 (27°34’16”N, 111°40’W), February 11, 2007, 1M, MN, from surface to 1215 m (TD, 1801 m) (ICML-EMU-12975-B) . TALUD XI. St. 19B (17°56’00”N, 103°10’00”W), June 9, 2007, 1F, MN from surface to 1200 m (TD, 1995 m) (ICML-EMU-12976-A) . TALUD XII. St. 28B (18°56’00”N, 104°59’57”W), April 2, 2008, 1M, MN from surface to 1425 m (TD, 2041 m) (ICML-EMU-12976-B) .</p><p>Distribution. Tropical and subtropical in the Pacific, Atlantic, and Indian Oceans, from 40°N to 40°S. Mediterranean and Red Seas. In the eastern Pacific from Mexico to Costa Rica, Panama, Colombia, and Ecuador (Vinogradov et al. 1996, García Madrigal 2007, Valencia &amp; Giraldo 2012, Valencia et al. 2013, Violante-Huerta et al. 2021, this study).</p><p>Remarks. One specimen (ICML-EMU-12975-A)was attached to the siphonophore Diphyes bojani (Eschscholtz, 1825); although it looked like a natural union, this could be a consequence of the sampling method. Rhabdosoma whitei has been observed previously associated with the ctenophore Beroe sp. (Harbison et al. 1978).</p><p>Mostly from surface to 200 m depth (Vinogradov et al. 1986). An epipelagic species reported as relatively common in the entire Gulf of California (Siegel-Causey 1982). In the Mexican part of the California Current Rhabdosoma whitei has been consistently reported by Lavaniegos &amp; Hereu (2009) and by Lavaniegos (2014, 2017), but not as a dominant species (present in 12% of the samples; Lavaniegos 2014). Our data indicate that R. whitei is a frequent species throughout the Gulf of California, also recorded off SW Mexico (Fig. 4).</p></div>	https://treatment.plazi.org/id/03E787AAFFE3AD20FF5C48C60282FE2B	Public Domain	No known copyright restrictions apply. See Agosti, D., Egloff, W., 2009. Taxonomic information exchange and copyright: the Plazi approach. BMC Research Notes 2009, 2:53 for further explanation.		MagnoliaPress via Plazi	Gasca, Rebeca;Hendrickx, Michel E.	Gasca, Rebeca, Hendrickx, Michel E. (2022): Pelagic amphipods (Crustacea: Amphipoda: Hyperiidea) in western Mexico. 7 Superfamily Platysceloidea. Family Oxycephalidae. Zootaxa 5105 (2): 219-236, DOI: 10.11646/zootaxa.5105.2.3
03E787AAFFE1AD20FF5C4F6E05DBFB74.text	03E787AAFFE1AD20FF5C4F6E05DBFB74.taxon	http://purl.org/dc/dcmitype/Text	http://rs.tdwg.org/ontology/voc/SPMInfoItems#GeneralDescription	text/html	en	Streetsia mindanaonis (Stebbing 1888)	<div><p>Streetsia mindanaonis (Stebbing, 1888)</p><p>Leptocotis mindanaonis Stebbing, 1888: 1598 .</p><p>Streetsia mindanaonis .— Brusca, 1981: 13 (list), 33 (key), fig. 23e, g; Siegel-Causey, 1982: 365 (key), 370; Vinogradov et al., 1996: 511 (key), 519‒521, fig. 225; García Madrigal, 2007: 158 (list); Guillén Pozo, 2007: 18 (key), 101‒103, fig. 35; Gasca, 2009: 89 (tab. 1); Lavaniegos &amp; Hereu, 2009: 152 (appendix); Gasca et al., 2012: 126 (tab. 1); Valencia &amp; Giraldo, 2012: 1493 (tab. 1); Zeidler, 2016: 93 (passim), 96 (key).</p><p>Material examined. 2M, 3F in three localities (Fig. 5).</p><p>TALUD V. St. 5 (22°00’57”N, 106°40’00”W), December 13, 2000, 1M, MN from surface to ca. 1400 m (TD&gt; 1600 m (ICML-EMU-12977) . TALUD VI. St. 7 (22°21’39”N, 107°01’42”W), March 14, 2001,1M, 2F, MN from surface to 1305 m (TD, 2100 m) (ICML-EMU-12978) . TALUD VII. St. 29 (25°17’31”N, 109°24’30”W), June 8, 2001, 1F, MN from surface to 1335 m (TD, 2080 m) (ECOSUR-10562) .</p><p>Distribution. Circumtropical, usually between 30°N and 30°S. In the eastern Pacific from Mexico to Colombia and Ecuador (García Madrigal 2007, Guillén Pozo, 2007, Valencia &amp; Giraldo 2012, this study).</p><p>Remarks. The five known species of Streetsia are distinguished mainly by the length of the double urosomite, the shape and structure of the gnathopod 2 and pereopod VI, and the cuticular pores on the epimeral plates.</p><p>Another species of oxycephalid rarely collected. Also rare in the Gulf of California, where Siegel-Causey (1982) found it only in the southern Gulf, where our material was also collected (Fig. 5). It has been found in the Mexican portion of the California Current by Lavaniegos &amp; Hereu (2009).</p></div>	https://treatment.plazi.org/id/03E787AAFFE1AD20FF5C4F6E05DBFB74	Public Domain	No known copyright restrictions apply. See Agosti, D., Egloff, W., 2009. Taxonomic information exchange and copyright: the Plazi approach. BMC Research Notes 2009, 2:53 for further explanation.		MagnoliaPress via Plazi	Gasca, Rebeca;Hendrickx, Michel E.	Gasca, Rebeca, Hendrickx, Michel E. (2022): Pelagic amphipods (Crustacea: Amphipoda: Hyperiidea) in western Mexico. 7 Superfamily Platysceloidea. Family Oxycephalidae. Zootaxa 5105 (2): 219-236, DOI: 10.11646/zootaxa.5105.2.3
03E787AAFFE1AD21FF5C486D0309FE9B.text	03E787AAFFE1AD21FF5C486D0309FE9B.taxon	http://purl.org/dc/dcmitype/Text	http://rs.tdwg.org/ontology/voc/SPMInfoItems#GeneralDescription	text/html	en	Streetsia porcella (Claus 1879)	<div><p>Streetsia porcella (Claus, 1879)</p><p>Oxycephalus porcellus Claus, 1879a: 194 (48).</p><p>Streetsia porcella .— Brusca, 1981: 13 (list), 33 (key), fig. 23d, l; Vinogradov et al., 1996: 511 (key), 516‒519, fig. 224; Gasca, 2009: 89 (tab. 1); Lavaniegos &amp; Hereu, 2009: 152 (appendix); Gasca et al., 2012: 126 (tab. 1); Lavaniegos, 2014: 5 (tab. 1); Zeidler, 2016: 93‒96 (passim), 96 (key).</p><p>Streetsia intermedia Spandl, 1927: 188‒190, figs. 20, 21 a‒l.</p><p>Streetsia nyctiphanes Fage, 1934: 1631 .</p><p>Material examined. 5M, 1F in four localities (Fig. 5).</p><p>TALUD III. St. 19 (25°12’00”N, 109°07’00”W), August 20, 1991, 2M, I-K, surface to 410 m (TD, 920 m) (ICML-EMU-12979-A); St. 19B (25°18’24”N, 109°18’36”W), August 20, 1991, 1M, I-K from surface to 600 m (TD, 1890 m) (ICML-EMU-12979-B). TALUD IV. St. 7 (22°00’22”N, 106°49’18”W), August 23, 2000, 1M, 1F, MN from surface to 500 m (TD, 1970 m) (ECOSUR-10563); St. 15 (23°23’30”N, 107°47’48”W), August 24, 2000, 1M, MN from surface to 1500 m (TD, 2350 m) (ICML-EMU-12980) .</p><p>Distribution. Epipelagic in tropical and subtropical waters of all oceans; Mediterranean Sea (Fage, 1960). In the eastern Pacific present in the Mexican portion of the California Current (Lavaniegos &amp; Hereu 2009) and the SE Gulf of California (this study).</p><p>Remarks. The head of this species is shorter than in the other species of the genus and the body is more robust.</p><p>Found mostly between 0 and 300 m depth (Vinogradov et al. 1996). Not recorded previously by Siegel-Causey (1982) in the Gulf of California and not listed by García Madrigal (2007) for the tropical eastern Pacific, S. porcella had been consistently collected in the Mexican portion of the California Current (Lavaniegos &amp; Hereu 2009, Lavaniegos 2014). During our survey it was recorded in four localities in the Gulf of California (Fig. 5).</p></div>	https://treatment.plazi.org/id/03E787AAFFE1AD21FF5C486D0309FE9B	Public Domain	No known copyright restrictions apply. See Agosti, D., Egloff, W., 2009. Taxonomic information exchange and copyright: the Plazi approach. BMC Research Notes 2009, 2:53 for further explanation.		MagnoliaPress via Plazi	Gasca, Rebeca;Hendrickx, Michel E.	Gasca, Rebeca, Hendrickx, Michel E. (2022): Pelagic amphipods (Crustacea: Amphipoda: Hyperiidea) in western Mexico. 7 Superfamily Platysceloidea. Family Oxycephalidae. Zootaxa 5105 (2): 219-236, DOI: 10.11646/zootaxa.5105.2.3
03E787AAFFE0AD21FF5C4C46026EFC55.text	03E787AAFFE0AD21FF5C4C46026EFC55.taxon	http://purl.org/dc/dcmitype/Text	http://rs.tdwg.org/ontology/voc/SPMInfoItems#GeneralDescription	text/html	en	Streetsia steenstrupi (Bovallius 1887)	<div><p>Streetsia steenstrupi (Bovallius, 1887)</p><p>Oxycephalus Steenstrupi Bovallius, 1887: 37 .</p><p>Streetsia steenstrupi .— Brusca, 1981: 13 (list), 33 (key), fig. 23c, j; Stebbing, 1888: 365 (key), 371; Vinogradov et al., 1996: 511 (key), 514‒516, fig. 223; García Madrigal, 2007: 158 (list); Gasca, 2009: 89 (tab. 1); Lavaniegos &amp; Hereu, 2009: 142 (tab. 1), 152 (appendix); Lavaniegos, 2014: 5 (tab. 1); Valencia et al., 2013: 52 (tab. 1); Zeidler, 2016: 93‒96 (passim), 96 (key).</p><p>Material examined. 2M in one locality (Fig. 5).</p><p>TALUD IV. St. 15 (23°23’30”N, 107°47’48”W), August 24, 2000, 2M, MN from surface to 1500 m (TD, 2350 m) (ICML-EMU-12981) .</p><p>Distribution. Tropical and subtropical oceans. In the eastern Pacific from California to Panama (Vinogradov et al. 1996, García Madrigal 2007, Valencia et al. 2013). Present in the SE Gulf of California (this study).</p><p>Remarks. The two males examined were young specimens (about 7 mm long). Both feature the characteristics of S. steenstrupi .</p><p>Not recorded previously by Siegel-Causey (1982) in the Gulf of California, Streetsia steenstrupi has been previously reported from the Mexican portion of the California Current (Lavaniegos &amp; Hereu 2009, Lavaniegos 2014). During our survey it was recorded only in one locality in the Gulf of California (Fig. 5).</p></div>	https://treatment.plazi.org/id/03E787AAFFE0AD21FF5C4C46026EFC55	Public Domain	No known copyright restrictions apply. See Agosti, D., Egloff, W., 2009. Taxonomic information exchange and copyright: the Plazi approach. BMC Research Notes 2009, 2:53 for further explanation.		MagnoliaPress via Plazi	Gasca, Rebeca;Hendrickx, Michel E.	Gasca, Rebeca, Hendrickx, Michel E. (2022): Pelagic amphipods (Crustacea: Amphipoda: Hyperiidea) in western Mexico. 7 Superfamily Platysceloidea. Family Oxycephalidae. Zootaxa 5105 (2): 219-236, DOI: 10.11646/zootaxa.5105.2.3
