identifier	taxonID	type	CVterm	format	language	title	description	additionalInformationURL	UsageTerms	rights	Owner	contributor	creator	bibliographicCitation
03F6590CFFC7FFBEFE16FF0921809FC1.text	03F6590CFFC7FFBEFE16FF0921809FC1.taxon	http://purl.org/dc/dcmitype/Text	http://rs.tdwg.org/ontology/voc/SPMInfoItems#GeneralDescription	text/html	en	Diastylis fabrizioi Alberico & Roccatagliata 2008	<div><p>Diastylis fabrizioi n. sp.</p><p>(Figures 2–9, 10A–E)</p><p>Material examined</p><p>R/V ‘‘ Veliger’ ’. Anchieta Island, São Paulo State, approximately 23 ° 329S, 45 ° 049W. Sta. D 4-12(4)VIII, 18 m, 02 March 1963: 1 ovigerous ♀, 1 preparatory ♀. Sta. T17a- 12(3)VIII, 18 m, 02 March 1963: 1 ovigerous ♀, 1 preparatory ♀, 1 juvenile. Sta. N13a-12(4)VIII, 18 m, 02 March 1963: 2 preparatory ♀♀, 1 juvenile. Sta. 187- 14(1)IX, 18 m, 29 January 1964: 1 preparatory ♀, 1 subadult „. Sta. 128-14(3)IX, 18 m, 29 January 1964: 1 subadult „. Sta. 467-16(2)IX, 21 m, 03 February 1964: 1 subadult „. Sta. 617-48(1)IX, 13 m, 11 February 1964: 2 ovigerous ♀♀, 2 subadult „„, 1 juvenile. F/V ‘‘ Lerez’ ’. <a href="https://tb.plazi.org/GgServer/search?materialsCitation.longitude=-55.983334&amp;materialsCitation.latitude=-34.316666" title="Search Plazi for locations around (long -55.983334/lat -34.316666)">Sta.</a> 8201/16, 34 ° 019S, 53 ° 159W, 15 m, 06 February 1982: 1 preparatory ♀. Sta. 8204/10, 35 ° 279S, 55 ° 059W, 22 m, 05 March 1982: 1 ovigerous ♀, 1 preparatory ♀. R/V ‘‘Aldebarán’’. Sta. 9906-23, 34 ° 08910S, 53 ° 34940W, 19 m, 11 December 1999: 15 ovigerous ♀♀, 24 preparatory ♀♀ (2 of them infested with nicothoids), 12 adult „„, 11 subadult „„, 12 juveniles (1 of them infested with nicothoids) (Holotype: MACN-In. 37087; Paratypes: MACN-In. 37088, MUNHINA 1962). Sta. 9901–25, 34 ° 48970S, 54 ° 21990W, 25 m, 27 January 1999: 62 ovigerous ♀♀ (5 of them infested with nicothoids), 47 preparatory ♀♀ (11 of them infested with nicothoids), 1 adult „, 15 subadult „„ (2 of them infested with nicothoids), 55 juveniles, 18 mancas. Sta. 2002–05 R2, 34 ° 109S, 53 ° 009W, 33 m, December 2002: 65 ovigerous ♀♀ (9 of them infested with nicothoids), 99 preparatory ♀♀ (5 of them infested with nicothoids), 27 adult „„, 57 subadult „„, 898 juveniles (4 of them infested with nicothoids), 30 mancas. Sta. 2002–05 R1, 35 ° 119S, 54 ° 169W, 30 m, 13 December 2002: 20 ovigerous ♀♀ (3 of them infested with nicothoids), 15 preparatory ♀♀ (4 of them infested with nicothoids), 8 adult „„, 3 subadult „„, 12 juveniles, 1 manca. R/V ‘‘ Eduardo Holmberg’ ’. EH 03/02, Sta. 11, 35 ° 469S, 56 ° 319W, 13 m, 02 August 2002, stomach content of Umbrina canosai Berg, 1895 (Sciaenidae), coll. Diego Giberto: 3 ovigerous ♀♀, 2 preparatory ♀♀, 1 subadult „, 1 juvenile. R/V ‘‘ Lamatra’ ’. Sta. IP0063, 36 ° 019S, 56 ° 099W, 18 m, 16 December 1979: 4 ovigerous ♀♀, 1 adult „. Las Toninas. 36 ° 299S, 56 ° 409W, 2– 10 m, 09–11 February 2000: 5 ovigerous ♀♀, 2 adult „„. Proyecto de Fomento Pesquero. PFP VIII, off Mar del Plata, 38 ° 029S, 57 ° 309W, night plankton, 23 October 1967: 1 ovigerous ♀, 2 juveniles. PFP XII, off Mar del Plata, 02–03 November 1967: 1 adult „, 1 subadult „. Puerto Quequén. Sta. 2, 38 ° 419270S, 58 ° 429060W, 39.5 m, 15 December 2005: 1 preparatory ♀, 1 subadult „, 3 juveniles. Sta. 3, 38 ° 419220S, 58 ° 429W, 38 m, 15 December 2005: 2 juveniles. Sta. 4, 38 ° 429490S, 58 ° 419530W, 45 m, 15 December 2005: 2 preparatory ♀♀, 3 subadult „„, 6 juveniles, 1 manca. Sta. 9, 38 ° 479130S, 58 ° 419360W, 51.7 m, 15 December 2005: 1 juvenile. Sta. 11, 38 ° 509320S, 58 ° 419010W, 58.7 m, 15 December 2005: 1 preparatory ♀ (infested with nicothoids). Sta. 12, 38 ° 509330S, 58 ° 419050W, 57.7 m, 15 December 2005: 1 ovigerous ♀, 2 juveniles. Sta. 13, 38 ° 509390S, 58 ° 409570W, 60 m, 15 December 2005: 1 juvenile. Sta. 15, 38 ° 419380S, 58 ° 429240W, 40 m, 15 December 2005: 1 preparatory ♀, 1 subadult „. Sta. 18, 38 ° 369440S, 58 ° 419540W, 25.3 m, 15 December 2005: 1 juvenile, 4 mancas. Sta. 20, 38 ° 359350S, 58 ° 429040W, 15.3 m, 15 December 2005: 1 adult „. R/V ‘‘ Shinkai Maru’ ’. Sta. SMVI-15, 40 ° 319180S, 61 ° 329240W, 36 m, 26 September 1978: 1 adult „, 1 subadult „. San Antonio Oeste, Bahía Reparo, 40 ° 479S, 64 ° 549480W, 3 m, 26 November 1997: 10 ovigerous ♀♀, 31 preparatory ♀♀, 1 adult „, 9 subadult „„, 95 juveniles, 14 mancas. San Antonio Oeste. Sta. 2, 40 ° 539050S, 65 ° 049260W, 12 m, 03 January 2005: 1 subadult „, 1 juvenile. Sta. 8, 40 ° 539210S, 65 ° 049W, 20 m, 03 January 2005: 2 subadult „„, 1 juvenile. Sta. 11, 40 ° 539090S, 65 ° 049160W, 12–20 m, 03 January 2005: 1 ovigerous ♀, 1 preparatory ♀. Sta. 12, 40 ° 539040S, 65 ° 049200W, 12–20 m, 03 January 2005: 1 ovigerous ♀, 1 preparatory ♀, 1 adult „, 4 juveniles, 2 mancas. Sta. 14, 40 ° 559430S, 65 ° 049190W, 12–20 m, 05 January 2005: 1 preparatory ♀. Sta. 15, 40 ° 559430S, 65 ° 049190W, 12–20 m, 05 January 2005: 1 juvenile. Sta. 20, 40 ° 559370S, 65 ° 059060W, 16 m, 05 January 2005: 1 preparatory ♀, 1 juvenile, 1 manca. Sta. 21, 40 ° 559120S, 65 ° 039590W, 18 m, 05 January 2005: 1 juvenile.</p><p>Description of ovigerous female</p><p>Based on the holotype MACN-In. 37087 and the paratype MACN-In. 37088a.</p><p>Total length</p><p>Approximately 7.4 mm.</p><p>Carapace (Figures 2A, B; 10A, B)</p><p>Approximately 1.3 times as long as wide, with two prominent oblique ridges that enclose a large depressed dorso-anterior area (plateau). Both oblique ridges have a row of denticles anteriorly (more clearly visible in dorsal view). At approximately one-third of the way from the anterior end each oblique ridge joins a curved ridge that runs upwards from the lower edge of the carapace (point of junction not produced into a tooth or angularity). From each curved ridge, a horizontal ridge extends backwards that disappears before reaching the posterior margin of carapace. Dorsally, each oblique ridge meets a longitudinal (or slightly divergent) ridge coming from the hind margin of the carapace. At each of these merging points a third ridge originates, and these converge, from the left and right, into a blunt mid-dorsal ridge that fades away a short distance after reaching the frontal lobe. A pentagonal figure enclosing a depressed area is defined by the posterior margin of the carapace (side ‘‘a’’) together with the two longitudinal ridges (sides ‘‘b’’) and the two convergent ridges. Side ‘‘a’’ of pentagon is 1.23–1.58 times as long as side ‘‘b’’. The frontal lobe has two hardly visible transverse grooves. The pseudorostrum is more than twice the ocular lobe length. The latter with three clear areas (or poorly developed lenses) arranged in a triangle, central area covering two contiguous ommatidia, latero-posterior areas covering one ommatidium each. Antennal notch widely open, antero-lateral angle rounded, inferolateral edge hardly serrate.</p><p>Thorax</p><p>Postero-lateral angles of pereonite 5 short and rounded in dorsal view.</p><p>Pleon</p><p>Slightly shorter than carapace and free pereonites combined.</p><p>Telson (Figures 6D, 10E)</p><p>Approximately 1.5 times as long as last pleonite, with six cuspidate setae on each side (four to eight in other ovigerous females examined) and two divergent cuspidate setae stouter than the lateral setae distally.</p><p>Antenna 1 (Figure 2C)</p><p>Peduncle, article 1 approximately as long as articles 2 and 3 combined, with several large teeth on distal margin, four or five unequal setulate setae on inner corner and one simple seta arched over article on outer corner; article 2 approximately 0.8 as long as article 3. Main flagellum of five articles, articles 1–4 subequal in length and article 5 minute, articles 4 and 5 with one aesthetasc each. Accessory flagellum almost reaching distal end of article 2 of main flagellum; of three articles, article 2 the longest.</p><p>Antenna 2 (Figure 2D)</p><p>Has three (four?) articles. Distal article minute, with one seta with tiny setules. Remaining articles with one setulate seta each.</p><p>Right mandible (Figure 3A)</p><p>Has one rudimentary lacinia mobilis and 12 setae (five most distal ones bifurcated).</p><p>Left mandible</p><p>As right but with well-developed lacinia mobilis.</p><p>Maxilla 1 (Figure 3B)</p><p>Outer endite with 14 cuspidate distal setae and one small seta on outer margin. Inner endite with five unequal distal setae. Palp with two long distal setae bearing tiny retrorse setules distally.</p><p>Maxilla 2 (Figure 3C)</p><p>Protopod, inner margin with two setulate setae and a row of approximately 27 setae that fully agree with the plumose type described by Garm (2004); distal end with simple, setulate and serrate setae. Outer endite with three serrate and three serrulate setae; inner endite with three serrate and one serrulate setae.</p><p>Maxilliped 1 (Figure 4A)</p><p>Basis with five setuloserrate setae on inner distal margin. Endite with five setulate setae (some of them also serrate distally), four serrulate setae and two stout setae (one oval with a row of teeth distally, one crescent-shaped, see details). Merus with two or three translucent teeth and two simple setae on outer margin. Carpus, inner margin with sparsely setulate setae and a row of nine setae (each with setules proximally and three or four lamellae distally, see detail), ventral surface with many simple setae (not drawn), outer distal corner with one large setulate seta. Propodus with many simple setae (not drawn) and three large setulate setae. Dactylus narrow, with two lateral simple setae and two distal serrulate setae.</p><p>Maxilliped 2 (Figure 4B)</p><p>Basis shorter than the remaining articles together, dorsal surface with two barely setulate setae distally and several small simple setae, ventral surface with four or five setulate setae distally (not drawn, similar to those shown for male in Figure 7D) and several small simple setae. Merus approximately as long as propodus and 0.75 as long as carpus, with one setulate seta on distal outer corner, two setulate setae on inner margin and several small simple setae on dorsal and ventral surfaces. Carpus with two unequal setulate setae on distal outer corner and 15 setae (14 in other specimens examined) on inner margin (only most dorsal ones drawn). Propodus, outer margin with one strong setulate seta in proximal third of article and one barely setulate seta distally; inner margin with 12 barely setulate setae and five serrulate setae in between (only a few setae drawn, a detail of one of these serrulate seta is presented in Figure 4B). Dactylus with serrulate and simple setae distally.</p><p>Maxilliped 3 (Figure 4C)</p><p>Basis expanded distally (opercular), inner margin with a row of teeth and many setulate setae, distal process with six setulate setae. Ischium broad, with one setulate and two simple setae on inner margin. Merus with three setulate setae on inner margin and one strong setulate seta on outer margin. Inner distal corner of ischium and merus with teeth (those on ischium larger). Carpus with four setulate setae on inner margin and two unequal setulate setae on distal outer corner. Propodus with five to seven setulate setae on inner margin and one setulate seta on outer distal corner. Dactylus with six long setae (five simple and one serrulate) distally and three short serrulate setae on inner margin. Exopod: flagellum of six articles.</p><p>Pereopod 1 (Figure 5A)</p><p>Basis approximately 0.86 as long as remaining articles together, with setulate setae on both margins and distally. Merus with both setulate and simple setae distally, remaining articles with simple setae only. Ischium and merus combined approximately as long as carpus. Ischium, merus and carpus combined approximately 0.9 as long as propodus and dactylus combined. Dactylus approximately two-thirds as long as propodus. Exopod: flagellum of seven articles.</p><p>Pereopod 2 (Figure 5B)</p><p>Basis approximately as long as remaining articles together, with a row of teeth on outer margin and setulate setae on both margins. Ischium and merus combined approximately 0.64 as long as carpus. Merus with three setulate setae distally (outer seta more profusely setulate than the others). Carpus approximately 1.3 times as long as propodus and dactylus together, with a serration on dorsal surface and with short simple setae on both margins and distally. Exopod: flagellum of seven articles.</p><p>Pereopod 3 (Figure 6A)</p><p>Basis approximately as long as remaining articles together, with long setulate setae, short simple (?) setae (dirtiness precludes confirmation whether they are simple, finely setulate or contaminated by fungal hyphae), and broom setae. Ischium with several setae distally: one short simple (?), others long and annulate. Merus with annulate setae (only those on outer surface drawn). Carpus approximately 0.75 as long as merus, with annulate setae, viz. six on outer surface and three (two setae in other three specimens examined, not drawn) on inner surface. Propodus with one annulate seta and one broom seta. Dactylus with one three-toothed cuspidate seta and one simple seta (see detail). Exopod of two articles, distal article with four unequal setae (some of them may be setulate).</p><p>Pereopod 4 (Figure 6B)</p><p>As pereopod 3 except for: basis shorter than remaining articles together. Ischium with annulate setae only. Carpus 0.80 as long as merus, with seven or eight annulate setae on outer surface (two most proximal with a few setules; in other specimens examined six or seven annulate setae, all of them bare).</p><p>Pereopod 5 (Figure 6C)</p><p>As pereopod 3 except for: basis shorter than remaining articles together. Ischium with annulate setae only. Carpus 0.95 as long as merus, with eight annulate setae (most proximal one with a few setules, all of them bare in other specimens examined). Without exopod.</p><p>Uropod (Figures 6D, 10E)</p><p>Peduncle approximately 1.2 times as long as the telson, with 15–16 cuspidate setae on inner margin (15–17 in other two specimens examined). Rami subequal. Endopod: article 1 slightly shorter than other two together, with four or five cuspidate setae on inner margin (four to seven in other specimens examined) and one simple seta on outer distal corner; article 2 slightly shorter than article 3, with two cuspidate setae on inner margin (two or three in other specimens examined) and one simple seta on outer distal corner; article 3 with three cuspidate setae on inner margin (three or four in other specimens examined), and one cuspidate seta and one simple seta distally. Exopod with simple setae on outer margin (only dorsal ones drawn) and four unequal simple setae distally.</p><p>Description of adult male</p><p>Based on the paratypes MACN-In. 37088c, d.</p><p>Total length</p><p>Approximately 7.0 mm.</p><p>Carapace (Figures 7A, B; 10C, D)</p><p>As in female except for: approximately 1.4 times as long as wide, anterior part of the oblique ridges bearing a few denticles, middorsal ridge more marked, horizontal ridge reaching posterior margin of carapace, pentagon narrower (side ‘‘a’’ approximately as long as side ‘‘b’’) and enclosed area not so deeply excavated, lenses larger, antero-lateral angle not projecting.</p><p>Thorax</p><p>As in female except for: postero-lateral angles of pereonite 5 strongly produced and acute.</p><p>Pleon</p><p>As in female.</p><p>Telson (Figure 9C)</p><p>Approximately 1.5 times as long as last pleonite, with seven cuspidate setae on each side (eight in another specimen examined) and two divergent cuspidate setae (tips broken), stouter than lateral ones, distally.</p><p>Antenna 1 (Figure 7C)</p><p>Peduncle, article 1 approximately 1.2 times as long as articles 2 and 3 combined, inner distal corner with three unequal setulate setae, outer distal corner with one simple seta arched over article; article 2 approximately 1.2 times as long as article 3. Main flagellum of six articles, article 1 thickest and with many aesthetascs (only two drawn), article 3 the longest, following articles becoming shorter towards distal end, articles 5 and 6 with one aesthetasc each. Accessory flagellum extending slightly beyond article 3 of main flagellum; of four articles, article 3 the longest.</p><p>Mouthparts and maxilliped 1</p><p>As in female.</p><p>Maxilliped 2 (Figure 7D)</p><p>As in female except for: basis with a short ridge on outer margin. Both dorsal and ventral setae of basis were drawn, setae from remaining articles omitted.</p><p>Maxilliped 3 (Figure 8A)</p><p>As in female except for: basis less arched and less setose. Exopod larger, flagellum of eight articles.</p><p>Pereopod 1 (Figure 8B)</p><p>As in female except for: basis approximately 1.05 times as long as remaining articles together, setae on inner margin less abundant and shorter. Exopod larger, flagellum of nine articles.</p><p>Pereopod 2 (Figure 8C)</p><p>As in female except for: basis, distal end much wider than ischium, setae on inner margin less abundant and shorter. Ischium and merus combined approximately 0.5 as long as carpus. Carpus with five serrulate setae distally. Exopod larger, flagellum of nine articles.</p><p>Last three pereopods</p><p>They differ mainly from those of the female in: bases of pereopods 3–5 stronger and less setose, exopods of pereopods 3 (Figure 8D) and 4 with nine-articulated flagella; carpus of pereopod 5 with fewer (six) annulate setae.</p><p>Pleopod 1 (Figure 9A)</p><p>Peduncle, inner margin with five or six short setae (having setules basally and minute nodules distally) and four or five long setulate setae, anterior surface with a row of six or seven simple setae. Endopod of one article bearing two broom and six long setulate setae. Exopod of two articles, distal one with four long setulate setae.</p><p>Pleopod 2 (Figure 9B)</p><p>As first except for: inner margin with four short setae only (similar to those of pleopod 1), anterior surface with a row of five to seven simple setae.</p><p>Uropod (Figure 9C)</p><p>Peduncle approximately 1.3 times as long as telson, with 27–32 cuspidate setae on inner margin (26–28 in another specimen examined). Rami subequal. Endopod: article 1 as long as other two combined, with nine cuspidate setae on inner margin (9–11 in another specimen examined) and one simple seta on outer distal corner; article 2 as long as article 3, with seven cuspidate setae on inner margin and one simple seta on outer distal corner; article 3 with 10–11 cuspidate setae on inner margin (9–10 in another specimen examined), and one cuspidate seta and one simple seta distally. Exopod with simple setae on outer margin (only dorsal ones drawn) and four unequal simple setae distally.</p><p>Etymology</p><p>This species is named after Fabrizio Scarabino for kindly supplying us most of the specimens on which the description of this species is based.</p><p>Distribution</p><p>The specimens examined range from São Paulo State (Brazil) to Río Negro Province (Argentina) between 2 and 60 m depth.</p></div>	https://treatment.plazi.org/id/03F6590CFFC7FFBEFE16FF0921809FC1	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.		Plazi	Alberico, Natalia A.;Roccatagliata, Daniel	Alberico, Natalia A., Roccatagliata, Daniel (2008): Diastylis fabrizioi, a new species and brief redescription of D. planifrons Calman, 1912 (Crustacea: Cumacea: Diastylidae) from South America. Journal of Natural History 42 (13 - 14): 1039-1063, DOI: 10.1080/00222930701858359, URL: http://dx.doi.org/10.1080/00222930701858359
03F6590CFFD2FFB9FDE4F99022719EB2.text	03F6590CFFD2FFB9FDE4F99022719EB2.taxon	http://purl.org/dc/dcmitype/Text	http://rs.tdwg.org/ontology/voc/SPMInfoItems#GeneralDescription	text/html	en	Diastylis planifrons Calman 1912	<div><p>Diastylis planifrons Calman, 1912</p><p>(Figures 10F, 11, 12)</p><p>Diastylis planifrons Calman 1912: pp. 643–645, Figures 58–61 (original description, type locality: Cabo Vírgenes, Argentina; additional record: Magellan Straits, Chile); Ledoyer 1993: p. 1057 (cited); Gerken and Watling 1998: p. 873 ( D. planifrons is compared with other nine spp. of the genus Diastylis); Brandt et al. 1999: p. 545, Table 1 (Beagle Channel, new record); Mühlenhardt-Siegel 1999: pp. 297–300, Tables 2–4 (repeat record previously reported by Brandt et al. 1999); Błażewicz-Paszkowycz and Heard 2005: pp. 654–659, Figures 3–5 (redescription of a nonmarsupial female; new records: Burdwood Bank,?Drake Passage). For previous citations see Băcescu 1992: p. 302 (catalogue).</p><p>Material examined</p><p>R/V ‘‘ Aldebarán’ ’. Sta. 9508-17, 35 ° 539S, 53 ° 279W, 95 m, 24 September 1995: 1 juvenile. R/V ‘‘ Akademik Knipovich’ ’. Sta. 1055, 36 ° 169S, 54 ° 019300W, 96 m, April 1967: 1 ovigerous ♀, 1 subadult „, 18 juveniles. R/V ‘‘ Eduardo Holmberg’ ’. GEF RdP, EG 792, 37 ° 469S, 56 ° 159W, 74 m, 20 November 2001, coll. Diego Giberto: 1 ovigerous ♀. R/V ‘‘ Puerto Deseado’ ’. GEF Patagonia II, EG 13, 41 ° 009S, 57 ° 199W, 90 m, 12 March 2006: 1 preparatory ♀. GEF Patagonia II, EG 64, 43 ° 409S, 59 ° 489W, 108 m, 29 March 2006, coll. Diego Giberto: 1 preparatory ♀ (infested with nicothoids and cryptonisci), 3 subadult „„. Off Puerto Montt, Punta Metrencue, Calbuco, Chile, 41 ° 449S, 73 ° 069W, 25 m, 04 July 2006, coll. Pamela González Salvo: 1 preparatory ♀. R/V ‘‘ Walther Herwig’ ’. Sta. WHII-662, 44 ° 569420S, 62 ° 249360W, 100 m, 19 June 1978: 1 juvenile. Comodoro Rivadavia. Sta. 6, 45 ° 519210S, 67 ° 279080W, 13.8 m, 05 February 2006: 1 preparatory ♀, 1 subadult „. Platform Supply Vessel ‘‘ Golondrina de Mar’ ’. Río Gallegos. Sta. H, 52 ° 279S, 68 ° 069W, 26 m, 27 October 2006, coll. Juan López Gappa: 1 subadult „. R/V ‘‘Victor Hensen’’. Sta. 813: Estrecho Laredo, 52 ° 579300S, 70 ° 419W, 90 m, 18 October 1994: 1 ovigerous ♀, 1 preparatory ♀ (ZMH K-41450). Sta. 920: Estrecho Gente Grande, 52 ° 569480S, 70 ° 189540W, 19 m, 28 October 1994: 3 preparatory ♀♀ (ZMH K-41451). Sta. 1152: Bahía Oglander, 55 ° 099060S, 67 ° 019420W, 15 m, 08 November 1994: 1 ovigerous ♀, 1 subadult „ (ZMH K-41452). Cape San Pío, Beagle Channel, 55 ° 039S, 66 ° 379W, 70– 80 m, 27 January 2003: 1 preparatory ♀ (MACN-In. 37089), 1 preparatory ♀ (infested with nicothoids), 9 juveniles (1 of them infested with nicothoids), 4 mancas. Ushuaia, Beagle Channel, Sta. 2, 54 ° 499S, 68 ° 159W, 33 m, 27 April 2005: 1 preparatory ♀. Becasses Islands, Beagle Channel, 54 ° 579S, 67 ° 019W, 30–40 m, 26 September 2002, coll. Diego Zelaya: 2 ovigerous ♀♀.</p><p>Description of ovigerous female</p><p>Based on the specimen ZMH K-41452.</p><p>Total length</p><p>Approximately 10.2 mm.</p><p>Carapace (Figures 11A, B; 10F)</p><p>Approximately 1.3 times as long as wide, with two strong oblique ridges enclosing a large depressed dorsal area (plateau). These ridges are even (not denticulate) and produced into a blunt tooth at junction with the curved ridges that run up from the lower edge. Sides with an incipient horizontal ridge (these ridges are only visible by rotating the specimen). Two dorsal subparallel ridges run from hind margin of carapace to the oblique ridges. At each of these merging points a third ridge originates, and these converge, from the left and right, into a blunt but distinct middorsal ridge, which is interrupted by two transverse grooves just behind ocular lobe. The subparallel ridges, together with the convergent ones and posterior margin of carapace form a pentagonal figure whose side ‘‘a’’ is 0.69–0.82 as long as its side ‘‘b’’. Pseudorostrum more than twice ocular lobe length. Ocular lobe with three welldeveloped lenses in a triangular arrangement. Antero-lateral angle rounded, inferolateral edge not serrate.</p><p>Thorax</p><p>Postero-lateral angles of pereonite 5 short and pointed in dorsal view. Pleon</p><p>Slightly shorter than carapace and free pereonites combined.</p><p>Telson (Figure 11C)</p><p>Approximately 1.3 times as long as last pleonite, each side with five cuspidate setae (four to six in other ovigerous females examined) and distal end with two cuspidate setae, in close opposition and stouter than the lateral ones.</p><p>Antenna 1</p><p>As in D. fabrizioi n. sp. except for: peduncle, article 1 slightly shorter than articles 2 and 3 combined. Main flagellum, articles 1–3 gradually increasing in length, article 4 approximately as long as article 1 (or article 2), article 5 minute.</p><p>Antenna 2</p><p>As in D. fabrizioi n. sp.</p><p>Mouthparts and maxillipeds</p><p>As in D. fabrizioi n. sp. except for: right and left mandibles with 14 and 13 setae, respectively. Maxilla 2: protopod, inner margin with four setulate setae and a row of approximately 40 setae that fully agree with the plumose type described by Garm (2004). Maxilliped 1: basis with six setuloserrate setae on inner distal margin, carpus with 10 setae (similar to those depicted in Figure 4A for D. fabrizioi n. sp.) on inner margin. Maxilliped 2: basis as long as remaining articles together, ventral surface with six setulate setae distally; merus, outer margin with a few teeth proximally (as those shown by Błażewicz-Paszkowycz and Heard, 2005 in Figure 5 A’); carpus and propodus respectively with 24 and 18 setulate setae on inner margin. Maxilliped 3: basis, distal process with six to eight setulate setae. Ischium with none or one tooth on inner distal corner, merus unarmed. Carpus with three setulate setae on inner margin. Dactylus with four or five short serrulate setae on inner margin. Exopod: flagellum of seven or eight articles.</p><p>Pereopod 1 (Figure 12A)</p><p>Basis 0.74 as long as remaining articles together, with setulate setae on both margins and distally. Remaining articles with simple setae. Ischium and merus combined slightly shorter than carpus. Ischium, merus and carpus combined 0.77 as long as propodus and dactylus combined. Dactylus approximately 0.77 as long as propodus. Exopod: flagellum of eight articles.</p><p>Pereopod 2 (Figure 12B)</p><p>Basis slightly shorter than remaining articles together, with setulate setae on both margins (setae on outer margin more abundant in another ovigerous female examined). Ischium and merus combined 0.56 as long as carpus. Merus with four setulate setae along distal third of inner margin and one setulate seta on outer distal corner. Carpus approximately 1.75 times as long as propodus and dactylus together, with a serration on dorsal surface and a few short simple setae. Exopod: flagellum of eight articles.</p><p>Pereopods 3, 4 and 5</p><p>As in D. fabrizioi n. sp. except for having 8, 9 and 10 annulate setae on carpus, respectively.</p><p>Uropod (Figure 11C)</p><p>Peduncle approximately 1.3 times as long as telson, with 18–19 cuspidate setae on inner margin. Rami subequal. Endopod: article 1 slightly shorter than articles 2 and 3 together, with six cuspidate setae on inner margin and one simple seta on outer distal corner; article 2 slightly shorter than article 3, with three cuspidate setae on inner margin and one simple seta on outer distal corner; article 3 with three cuspidate setae on inner margin (three or four in other ovigerous females examined), one simple seta on outer margin, and one cuspidate seta and one simple seta distally. Exopod with simple setae on outer margin (only dorsal ones drawn) and four unequal simple setae distally.</p><p>Distribution</p><p>Earlier records were from off Santa Cruz Province (holotype), the Magellan Straits, the eastern entrance of the Beagle Channel, Wollaston and Barnevelt Islands, and Burdwood Bank, between 12 and 119 m depth. It is now recorded for the first time off the Río de la Plata mouth and off Puerto Montt, and reported again from off Santa Cruz Province, the Magellan Straits and Beagle Channel, at depths between 14 and 108 m. This species was also recorded from the Drake Passage at 3590 m depth (‘‘ Eltanin’ ’ Cruise 6, Station 363, 7 December 1962). However, a labelling error apparently occurred (see Błażewicz-Paszkowycz and Heard, 2001).</p><p>Brief description of an intermediate form collected off Puerto Madryn</p><p>Material examined</p><p>Puerto Madryn (Bahía Nueva, Golfo Nuevo), Chubut Province, Argentina, approximately 42 ° 469S, 65 ° 029W, 8–12 m, 15–20 January 1984, coll. Diana Varela: 7 ovigerous ♀♀, 8 preparatory ♀♀, 3 adult „„, 4 subadult „„, 9 juveniles (MACN-In. 37090).</p><p>Total length of the ovigerous females</p><p>8.6–10.6 mm (seven specimens measured).</p><p>These ovigerous females agree with those of D. planifrons in having: (1) carapace ridge with a blunt projection and no teeth on its margins, and (2) telson with distal cuspidate setae in close apposition. However, the proportions of the pentagonal figure is in between those of the females of D. planifrons and D. fabrizioi n. sp., i.e. the side ‘‘a’’ is 1.06–1.2 times side ‘‘b’’.</p><p>To keep intact most of these specimens only two ovigerous females were dissected. The appendages of these two females differ from those of D. planifrons only in having on the carpi of the last three pereopods six, six or seven, and seven setae, respectively.</p></div>	https://treatment.plazi.org/id/03F6590CFFD2FFB9FDE4F99022719EB2	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.		Plazi	Alberico, Natalia A.;Roccatagliata, Daniel	Alberico, Natalia A., Roccatagliata, Daniel (2008): Diastylis fabrizioi, a new species and brief redescription of D. planifrons Calman, 1912 (Crustacea: Cumacea: Diastylidae) from South America. Journal of Natural History 42 (13 - 14): 1039-1063, DOI: 10.1080/00222930701858359, URL: http://dx.doi.org/10.1080/00222930701858359
