Paracaprella isabelae Sánchez-Moyano & García-Asencio & Guerra-García 2014, sp. nov.
Paracaprella isabelae sp. nov. (Figures 23–26) Type material Holotype male (MNCN 20.04 /9239), Allotype female (MNCN 20.04 /9240). Paratypes: 4 males (MNCN 20.04 /9241-44), 4 females (MNCN 20.04 /9245-48). Additional material examined St6: 12 males, 14 females, 34 juveniles; St7: 65 males, 56 female...
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Biodiversity Taxonomy Animalia Arthropoda Malacostraca Amphipoda Caprellidae Paracaprella Paracaprella isabelae |
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Biodiversity Taxonomy Animalia Arthropoda Malacostraca Amphipoda Caprellidae Paracaprella Paracaprella isabelae Sánchez-Moyano, J. E. García-Asencio, I. Guerra-García, J. M. Paracaprella isabelae Sánchez-Moyano & García-Asencio & Guerra-García 2014, sp. nov. |
topic_facet |
Biodiversity Taxonomy Animalia Arthropoda Malacostraca Amphipoda Caprellidae Paracaprella Paracaprella isabelae |
description |
Paracaprella isabelae sp. nov. (Figures 23–26) Type material Holotype male (MNCN 20.04 /9239), Allotype female (MNCN 20.04 /9240). Paratypes: 4 males (MNCN 20.04 /9241-44), 4 females (MNCN 20.04 /9245-48). Additional material examined St6: 12 males, 14 females, 34 juveniles; St7: 65 males, 56 females, 32 juveniles; St8: 12 males, 5 females, 3 juveniles. Type locality Las Monas (Isla Isabel), México, 6 m, on hydroids and bryozoans. Etymology The species is dedicated to Isabel Sánchez, daughter of the first and second authors. She was born just after the sample survey of this study. Diagnosis Head rounded and dorsally humped. Large bifid sharp-pointed anterolateral projection on anterior margin of pereonite 2 in males, simple and rounded in females. Pereonite 3 with a rounded anterolateral projection in males. Short ventral forwarddirected projection with ‘raspberry’-like surface between the gnathopods 2. Mandibles with molar process and without palp. Flagellum of antenna 1 10-articulate. Coxa of gnathopod 2 with a tubercle with ‘raspberry’-like surface in males. Propodus palm of gnathopod 2 with rectangular projection proximally, bearing one proximal grasping spine and a distal long robust tooth in males. Pereopod 3 and 4 two-articulate. Pereopod 5–7 without grasping spines. Abdomen with a pair of setose uni-articulate appendages in males. Description Male holotype. Body length: 5.4 mm. Lateral and dorsal view (Figure 23): Head rounded and dorsally humped, eyes present. Pereonite 1 fused with head, suture present. Body dorsally smooth, except blunt dorsal protuberance in the middle of pereonites 2–3. Large adult with other blunt dorsal posterior protuberance on pereonite 2. Large bifid sharp-pointed anterolateral projection on anterior margin of pereonite 2. It has a short ventral forwarddirected projection with ‘raspberry’-like surface between gnathopods 2. Pereonite 3 with a rounded anterolateral projection. Pereonite 3 the longest. Pereonite 7 the shortest. Gills (Figure 23): Present on pereonites 3–4, oval. Gills on pereonite 3 about twice as long as those on pereonite 4. Mouthparts (Figure 24): Upper lip symmetrically bilobed without setulae apically. Mandibles with molar process and without palp; incisor and lacinia mobilis five-toothed; left and right mandibles with three and two pectinated setae, respectively. Lower lip with inner lobes well-marked and with a medial suture, outer lobes setose apically. Maxilla 1 outer lobe carrying six robust-stout setae; distal article of the palp with three robust and two long apical setae. Maxilla 2 inner lobe oval, carrying four distal setae, and outer lobe elongated, with five apical setae. Maxilliped inner plate rectangular carrying three setae apically; outer plate with six submarginal setae; palp four-articulate, scarcely setose; third article provided with a large distal process and setose apically; terminal article with a row of setulae on grasping margin, and two setae subdistally. Antennae (Figures 23 and 25): Antenna 1 shorter than the combined lengths of head and pereonite 2–3. Peduncle setose; flagellum 10-articulate. Antenna 2 a little shorter than peduncle of antenna 1; proximal peduncular article with a short acute projection distally; swimming setae absent; flagellum two-articulate, proximal article 2 times the length of the distal one. Gnathopods (Figure 25): Gnathopod 1 basis as long as ischium, merus and carpus combined; propodus palm with a single proximal grasping spine; grasping margin of propodus with setae; ventral margin of dactylus with several teeth. Gnathopod 2 inserted on the anterior half of pereonite 2; coxa bearing anteriorly a tubercle with ‘raspberry’-like surface; basis elongated slightly shorter than pereonite 2, without proximal serrated knob on ventral margin; propodus length about twice width; propodus palm with rectangular projection proximally, carrying one proximal grasping spine and a distal long robust tooth; grasping margin setose; dactylus thickened medially and setose. Pereopods (Figures 23 and 26): Pereopod 3 and 4 two-articulate, with five and four setae apically, respectively, and one seta distally on basal article. Pereopod 5–7 increasing in length, six-articulate and attached to the posterior end of the pereonite, with several plumose setae. Palm of propodus of pereopod 5 with a proximal knob bearing a small spine; palm of pereopod 6–7 with several proximal knobs, each bearing a small spine. Grasping spines absent. Penes (Figure 26): Penes short, situated laterally. Abdomen (Figure 26): A pair of setose uni-articulate appendages, a pair of lateral lobes, and a single dorsal lobe. Allotype female. Body length: 4.2 mm. Similar to male except for the following characteristics (Figures 23 and 25): oostegites present, being slightly setose on pereonite 3; small and rounded anterolateral projection on pereonite 2, lacking anterolateral projection on pereonite 3; flagellum of antenna 1 six-articulate; propodus of gnathopod 2 oval, with a proximal knob bearing a grasping spine and a plumose seta, dactylus not setose. Abdomen with a pair of lateral lobes and single dorsal lobe carrying two plumose setae (Figure 26). Habitat This species has been found on several substrates along the coast of Isla Isabel from 1 to 25 m depth. It was more abundant on hydroids and bryozoan ( Bugula sp.) at 6 m depth, although it was also recorded on gorgonians ( Pacifigorgia cf. agassizi ), and several red seaweeds. Other caprellids such as Aciconula acanthosoma , Caprella pitu , C. equilibra or Liropus isabelensis live on these substrates together with P. isabelae . Distribution Paracaprella isabelae has been found from the type locality, Isla Isabel, México (St 6, Bahía Tiburón; St 7, Las Monas; St 8, Cerro Pelón). Remarks on Paracaprella spp. So far, the genus Paracaprella Mayer, 1890 is represented by eight species: P. alata Mayer, 1903; P. barnardi McCain, 1967; P. crassa Mayer, 1903; P. digitimanus Quitete, 1971; P. guerragarciai Winfield and Ortiz, 2013; P. insolita Arimoto, 1980; P. pusilla Mayer, 1890; and P. tenuis Mayer, 1903. The main differences between Paracaprella spp. and the two new species, P. carballoi and P. isabelae , are summarized in Table 4. Paracaprella insolita has been excluded because only females have been described and it is the only Paracaprella with a characteristic projection dorsally on the head (Arimoto 1980). Paracaprella carballoi is morphologically close to P. barnardi and P. pusilla , but can be distinguished by the following characters: both P. carballoi and P. pusilla have a smooth body dorsally with an anterodorsal blunt protuberance on pereonite 2, whereas P. barnardi has a large tubercle in this position; the anterolateral projection of pereonite 2 is rounded and narrow as opposed to the sharp-pointed projection in the others; pereonite 4 and 5 are subequal in length whereas pereonite 3 is the longest; (1971), Laubitz (1972), Arimoto (1976), Sivaprakasam (1977), Diaz et al. (2005), Guerra-García et al. (2006) and Winfield and Ortiz (2013). P. insolita excluded. ( Continued ) Table 4. (Continued). Gnathopod 2 propodus Rectangular, one Rectangular, one Rectangular, two Rectangular, three Quadrate, one Quadrate, a Rectangular, one grasping Rectangular, one Rectangular palm, proximal grasping spine and grasping spine grasping teeth grasping grasping spine spine and long-robust grasping spine and large, projection short-robust tooth and short- spine and spine, short- and long-robust tooth and robust one small robust tooth robust tooth robust tooth tooth tooth grasping and a spine and digitiform short- projection robust tooth Gnathopod 1 propodus 1 1 1? 1 2 1 1 1 palm, no. of proximal grasping spine Mandibular palp Absent A simple seta A simple seta? Absent A simple seta Absent A simple seta Variable, a simple seta to three- articulated basis of gnathopod 2 elongated without proximal serrated knob but with two distal short processes on lateral margin; gnathopod 2 propodus palm with rectangular proximal projection bearing two grasping spines, but only one in all other species of the genus (except P. crassa , without grasping spines and carrying three teeth); and mandibular palp as a simple seta (similar to P. barnardi , P. pusilla and P. guerragarciai ). Paracaprella isabelae can be distinguished from all other species mainly by the following characteristics: head rounded and dorsally humped (similar to P. crassa , with which it also shares a blunt posterior protuberance on pereonite 2); large and bifid sharp-pointed anterolateral projection on pereonite 2 (in other species can be sharp-pointed but always single); rounded anterolateral projections on pereonite 3 (similar to P. alata although triangular on pereonite 3 and small and rounded on pereonite 4 in this case; triangular in P. digitimanus and absent in the other species of the genus); short ventral forward directed projection with ‘raspberry’-like surface between gnathopods 2; pereonite 4 and 5 subequal in length and pereonite 3 the longest, similar to P. carballoi and mandibular palp absent as is the case of P. alata and P. digitimanus . According to Winfield and Ortiz (2013), the genus Paracaprella has a geographic distribution encompassing temperate, subtropical and tropical seas. However, only P. barnardi and P. pusilla have been recorded so far from the American Pacific coast. While P. barnardi has a more local distribution (it has only been recorded from the type locality in Culebra Island, Panama), P. pusilla is the species of the genus with a more worldwide distribution and it is the only species found in European waters, presumably introduced by ship fouling (Ros and Guerra-García 2012; Ros et al. 2013), even though it has only been cited from the American coast in Chile (Guerra- García and Thiel 2001). Hence, both P. carballoi and P. isabelae represent the northernmost records of the genus on the East Pacific coast. : Published as part of Sánchez-Moyano, J. E., García-Asencio, I. & Guerra-García, J. M., 2014, Littoral caprellids (Crustacea: Amphipoda) from the Mexican Central Pacific coast, with the description of four new species, pp. 77-127 in Journal of Natural History 49 (1) on pages 115-124, DOI: 10.1080/00222933.2014.937366, http://zenodo.org/record/4002539 : {"references": ["Mayer P. 1890. Die Caprelliden des Golfes von Neapel und der angrenzenden Meeres- Abschnitte. Fauna Flora Golf Neapel. 17: 1 - 55.", "Mayer P. 1903. Die Caprellidae der Siboga-Expedition. Siboga-Expeditie. 34: 1 - 160.", "McCain JC. 1967. Paracaprella barnardi, a new species of caprellid (Crustacea: Amphipoda) from the West Coast of Panama. Proc Biol Soc Wash. 80: 219 - 222.", "Quitete JMPA. 1971. Paracaprella digitimanus, nova especie de Caprellidae da costa brasileira (Crustacea: Amphipoda). Atas Soc Biol Rio do Janeiro. 14: 161 - 164.", "Winfield I, Ortiz M. 2013. The Caprellidea (Crustacea: Peracarida: Amphipoda) from the Gulf of Mexico with a description of a new species of Paracaprella. Sci Mar. 77: 161 - 168. doi: 10.3989 / scimar. 03753.26 C", "Arimoto I. 1980. Supplements to the Japanese caprellid fauna. I. Caprellids from the Korean Straits and adjacent waters. Publ Seto Mar Biol Lab. 25: 95 - 113.", "McCain JC. 1968. The Capreillidae (Crustacea: Amphipoda) of the Western North Atlantic. US Natl Mus Bull. 278: 1 - 147. doi: 10.5479 / si. 03629236.278", "Laubitz DR. 1972. The Caprellidae (Crustacea, Amphipoda) of Atlantic and Arctic Canada. Natl Mus Nat Sci, Ottawa, Publ Biol Oceanogr. 4: 1 - 82.", "Arimoto I. 1976. Taxonomic studies of caprellids (Crustacea, Amphipoda, Caprellidae) found in the Japanese and adjacent waters. Seto Mar Biol Lab, Spec Publ. 3: 1 - 229.", "Sivaprakasam TE. 1977. The skeleton shrimps (Amphipoda: Caprellidea) of the Tamil Nadu and Kerala coasts. J Mar Biol Assoc India. 19: 78 - 96.", "Diaz YJ, Guerra-Garcia JM, Martin A. 2005. Caprellids (Crustacea: Amphipoda: Caprellidae) from shallow waters of the Caribbean coast of Venezuela. Org Divers Evol. 5: 249 - 251. (Electr. Suppl. 5: 10: 1 - 25). doi: 10.1016 / j. ode. 2004.11.010", "Guerra-Garcia JM, Krapp-Schickel T, Muller HG. 2006. Caprellids from the caribbean coast of Colombia, South America, with description of three new species and a key for species identification. Bol INVEMAR. 35: 149 - 194.", "Ros M, Guerra-Garcia JM. 2012. On the occurrence of the tropical caprellid Paracaprella pusilla Mayer, 1890 (Crustacea: Amphipoda) in Europe. Mediterr Mar Sci. 13: 134 - 139.", "Ros M, Vazquez-Luis M, Guerra-Garcia JM. 2013. The tropical caprellid amphipod Paracaprella pusilla: a new alien crustacean in the Mediterranean Sea. Helgol Mar Res. doi: 10.1007 / s 10152 - 013 - 0353 - 4"]} |
format |
Text |
author |
Sánchez-Moyano, J. E. García-Asencio, I. Guerra-García, J. M. |
author_facet |
Sánchez-Moyano, J. E. García-Asencio, I. Guerra-García, J. M. |
author_sort |
Sánchez-Moyano, J. E. |
title |
Paracaprella isabelae Sánchez-Moyano & García-Asencio & Guerra-García 2014, sp. nov. |
title_short |
Paracaprella isabelae Sánchez-Moyano & García-Asencio & Guerra-García 2014, sp. nov. |
title_full |
Paracaprella isabelae Sánchez-Moyano & García-Asencio & Guerra-García 2014, sp. nov. |
title_fullStr |
Paracaprella isabelae Sánchez-Moyano & García-Asencio & Guerra-García 2014, sp. nov. |
title_full_unstemmed |
Paracaprella isabelae Sánchez-Moyano & García-Asencio & Guerra-García 2014, sp. nov. |
title_sort |
paracaprella isabelae sánchez-moyano & garcía-asencio & guerra-garcía 2014, sp. nov. |
publisher |
Zenodo |
publishDate |
2014 |
url |
https://dx.doi.org/10.5281/zenodo.4329272 https://zenodo.org/record/4329272 |
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ENVELOPE(9.895,9.895,63.645,63.645) ENVELOPE(-59.717,-59.717,-62.450,-62.450) ENVELOPE(-60.667,-60.667,-63.783,-63.783) ENVELOPE(9.843,9.843,63.758,63.758) ENVELOPE(-64.000,-64.000,-65.433,-65.433) ENVELOPE(-60.883,-60.883,-63.900,-63.900) |
geographic |
Arctic Canada Pacific Seta Ortiz Diaz Bol Vazquez Asencio |
geographic_facet |
Arctic Canada Pacific Seta Ortiz Diaz Bol Vazquez Asencio |
genre |
Arctic North Atlantic |
genre_facet |
Arctic North Atlantic |
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ftdatacite:10.5281/zenodo.4329272 2023-05-15T15:21:18+02:00 Paracaprella isabelae Sánchez-Moyano & García-Asencio & Guerra-García 2014, sp. nov. Sánchez-Moyano, J. E. García-Asencio, I. Guerra-García, J. M. 2014 https://dx.doi.org/10.5281/zenodo.4329272 https://zenodo.org/record/4329272 unknown Zenodo http://zenodo.org/record/4002539 http://publication.plazi.org/id/5F7D9E151D590376C0571245FFB02C58 https://zenodo.org/communities/biosyslit https://dx.doi.org/10.1080/00222933.2014.937366 http://zenodo.org/record/4002539 http://publication.plazi.org/id/5F7D9E151D590376C0571245FFB02C58 https://dx.doi.org/10.5281/zenodo.4002587 https://dx.doi.org/10.5281/zenodo.4002589 https://dx.doi.org/10.5281/zenodo.4002591 https://dx.doi.org/10.5281/zenodo.4002595 https://dx.doi.org/10.5281/zenodo.4329273 https://zenodo.org/communities/biosyslit Open Access Creative Commons Zero v1.0 Universal https://creativecommons.org/publicdomain/zero/1.0/legalcode cc0-1.0 info:eu-repo/semantics/openAccess CC0 Biodiversity Taxonomy Animalia Arthropoda Malacostraca Amphipoda Caprellidae Paracaprella Paracaprella isabelae Text Taxonomic treatment article-journal ScholarlyArticle 2014 ftdatacite https://doi.org/10.5281/zenodo.4329272 https://doi.org/10.1080/00222933.2014.937366 https://doi.org/10.5281/zenodo.4002587 https://doi.org/10.5281/zenodo.4002589 https://doi.org/10.5281/zenodo.4002591 https://doi.org/10.5281/zenodo.4002595 htt 2021-11-05T12:55:41Z Paracaprella isabelae sp. nov. (Figures 23–26) Type material Holotype male (MNCN 20.04 /9239), Allotype female (MNCN 20.04 /9240). Paratypes: 4 males (MNCN 20.04 /9241-44), 4 females (MNCN 20.04 /9245-48). Additional material examined St6: 12 males, 14 females, 34 juveniles; St7: 65 males, 56 females, 32 juveniles; St8: 12 males, 5 females, 3 juveniles. Type locality Las Monas (Isla Isabel), México, 6 m, on hydroids and bryozoans. Etymology The species is dedicated to Isabel Sánchez, daughter of the first and second authors. She was born just after the sample survey of this study. Diagnosis Head rounded and dorsally humped. Large bifid sharp-pointed anterolateral projection on anterior margin of pereonite 2 in males, simple and rounded in females. Pereonite 3 with a rounded anterolateral projection in males. Short ventral forwarddirected projection with ‘raspberry’-like surface between the gnathopods 2. Mandibles with molar process and without palp. Flagellum of antenna 1 10-articulate. Coxa of gnathopod 2 with a tubercle with ‘raspberry’-like surface in males. Propodus palm of gnathopod 2 with rectangular projection proximally, bearing one proximal grasping spine and a distal long robust tooth in males. Pereopod 3 and 4 two-articulate. Pereopod 5–7 without grasping spines. Abdomen with a pair of setose uni-articulate appendages in males. Description Male holotype. Body length: 5.4 mm. Lateral and dorsal view (Figure 23): Head rounded and dorsally humped, eyes present. Pereonite 1 fused with head, suture present. Body dorsally smooth, except blunt dorsal protuberance in the middle of pereonites 2–3. Large adult with other blunt dorsal posterior protuberance on pereonite 2. Large bifid sharp-pointed anterolateral projection on anterior margin of pereonite 2. It has a short ventral forwarddirected projection with ‘raspberry’-like surface between gnathopods 2. Pereonite 3 with a rounded anterolateral projection. Pereonite 3 the longest. Pereonite 7 the shortest. Gills (Figure 23): Present on pereonites 3–4, oval. Gills on pereonite 3 about twice as long as those on pereonite 4. Mouthparts (Figure 24): Upper lip symmetrically bilobed without setulae apically. Mandibles with molar process and without palp; incisor and lacinia mobilis five-toothed; left and right mandibles with three and two pectinated setae, respectively. Lower lip with inner lobes well-marked and with a medial suture, outer lobes setose apically. Maxilla 1 outer lobe carrying six robust-stout setae; distal article of the palp with three robust and two long apical setae. Maxilla 2 inner lobe oval, carrying four distal setae, and outer lobe elongated, with five apical setae. Maxilliped inner plate rectangular carrying three setae apically; outer plate with six submarginal setae; palp four-articulate, scarcely setose; third article provided with a large distal process and setose apically; terminal article with a row of setulae on grasping margin, and two setae subdistally. Antennae (Figures 23 and 25): Antenna 1 shorter than the combined lengths of head and pereonite 2–3. Peduncle setose; flagellum 10-articulate. Antenna 2 a little shorter than peduncle of antenna 1; proximal peduncular article with a short acute projection distally; swimming setae absent; flagellum two-articulate, proximal article 2 times the length of the distal one. Gnathopods (Figure 25): Gnathopod 1 basis as long as ischium, merus and carpus combined; propodus palm with a single proximal grasping spine; grasping margin of propodus with setae; ventral margin of dactylus with several teeth. Gnathopod 2 inserted on the anterior half of pereonite 2; coxa bearing anteriorly a tubercle with ‘raspberry’-like surface; basis elongated slightly shorter than pereonite 2, without proximal serrated knob on ventral margin; propodus length about twice width; propodus palm with rectangular projection proximally, carrying one proximal grasping spine and a distal long robust tooth; grasping margin setose; dactylus thickened medially and setose. Pereopods (Figures 23 and 26): Pereopod 3 and 4 two-articulate, with five and four setae apically, respectively, and one seta distally on basal article. Pereopod 5–7 increasing in length, six-articulate and attached to the posterior end of the pereonite, with several plumose setae. Palm of propodus of pereopod 5 with a proximal knob bearing a small spine; palm of pereopod 6–7 with several proximal knobs, each bearing a small spine. Grasping spines absent. Penes (Figure 26): Penes short, situated laterally. Abdomen (Figure 26): A pair of setose uni-articulate appendages, a pair of lateral lobes, and a single dorsal lobe. Allotype female. Body length: 4.2 mm. Similar to male except for the following characteristics (Figures 23 and 25): oostegites present, being slightly setose on pereonite 3; small and rounded anterolateral projection on pereonite 2, lacking anterolateral projection on pereonite 3; flagellum of antenna 1 six-articulate; propodus of gnathopod 2 oval, with a proximal knob bearing a grasping spine and a plumose seta, dactylus not setose. Abdomen with a pair of lateral lobes and single dorsal lobe carrying two plumose setae (Figure 26). Habitat This species has been found on several substrates along the coast of Isla Isabel from 1 to 25 m depth. It was more abundant on hydroids and bryozoan ( Bugula sp.) at 6 m depth, although it was also recorded on gorgonians ( Pacifigorgia cf. agassizi ), and several red seaweeds. Other caprellids such as Aciconula acanthosoma , Caprella pitu , C. equilibra or Liropus isabelensis live on these substrates together with P. isabelae . Distribution Paracaprella isabelae has been found from the type locality, Isla Isabel, México (St 6, Bahía Tiburón; St 7, Las Monas; St 8, Cerro Pelón). Remarks on Paracaprella spp. So far, the genus Paracaprella Mayer, 1890 is represented by eight species: P. alata Mayer, 1903; P. barnardi McCain, 1967; P. crassa Mayer, 1903; P. digitimanus Quitete, 1971; P. guerragarciai Winfield and Ortiz, 2013; P. insolita Arimoto, 1980; P. pusilla Mayer, 1890; and P. tenuis Mayer, 1903. The main differences between Paracaprella spp. and the two new species, P. carballoi and P. isabelae , are summarized in Table 4. Paracaprella insolita has been excluded because only females have been described and it is the only Paracaprella with a characteristic projection dorsally on the head (Arimoto 1980). Paracaprella carballoi is morphologically close to P. barnardi and P. pusilla , but can be distinguished by the following characters: both P. carballoi and P. pusilla have a smooth body dorsally with an anterodorsal blunt protuberance on pereonite 2, whereas P. barnardi has a large tubercle in this position; the anterolateral projection of pereonite 2 is rounded and narrow as opposed to the sharp-pointed projection in the others; pereonite 4 and 5 are subequal in length whereas pereonite 3 is the longest; (1971), Laubitz (1972), Arimoto (1976), Sivaprakasam (1977), Diaz et al. (2005), Guerra-García et al. (2006) and Winfield and Ortiz (2013). P. insolita excluded. ( Continued ) Table 4. (Continued). Gnathopod 2 propodus Rectangular, one Rectangular, one Rectangular, two Rectangular, three Quadrate, one Quadrate, a Rectangular, one grasping Rectangular, one Rectangular palm, proximal grasping spine and grasping spine grasping teeth grasping grasping spine spine and long-robust grasping spine and large, projection short-robust tooth and short- spine and spine, short- and long-robust tooth and robust one small robust tooth robust tooth robust tooth tooth tooth grasping and a spine and digitiform short- projection robust tooth Gnathopod 1 propodus 1 1 1? 1 2 1 1 1 palm, no. of proximal grasping spine Mandibular palp Absent A simple seta A simple seta? Absent A simple seta Absent A simple seta Variable, a simple seta to three- articulated basis of gnathopod 2 elongated without proximal serrated knob but with two distal short processes on lateral margin; gnathopod 2 propodus palm with rectangular proximal projection bearing two grasping spines, but only one in all other species of the genus (except P. crassa , without grasping spines and carrying three teeth); and mandibular palp as a simple seta (similar to P. barnardi , P. pusilla and P. guerragarciai ). Paracaprella isabelae can be distinguished from all other species mainly by the following characteristics: head rounded and dorsally humped (similar to P. crassa , with which it also shares a blunt posterior protuberance on pereonite 2); large and bifid sharp-pointed anterolateral projection on pereonite 2 (in other species can be sharp-pointed but always single); rounded anterolateral projections on pereonite 3 (similar to P. alata although triangular on pereonite 3 and small and rounded on pereonite 4 in this case; triangular in P. digitimanus and absent in the other species of the genus); short ventral forward directed projection with ‘raspberry’-like surface between gnathopods 2; pereonite 4 and 5 subequal in length and pereonite 3 the longest, similar to P. carballoi and mandibular palp absent as is the case of P. alata and P. digitimanus . According to Winfield and Ortiz (2013), the genus Paracaprella has a geographic distribution encompassing temperate, subtropical and tropical seas. However, only P. barnardi and P. pusilla have been recorded so far from the American Pacific coast. While P. barnardi has a more local distribution (it has only been recorded from the type locality in Culebra Island, Panama), P. pusilla is the species of the genus with a more worldwide distribution and it is the only species found in European waters, presumably introduced by ship fouling (Ros and Guerra-García 2012; Ros et al. 2013), even though it has only been cited from the American coast in Chile (Guerra- García and Thiel 2001). Hence, both P. carballoi and P. isabelae represent the northernmost records of the genus on the East Pacific coast. : Published as part of Sánchez-Moyano, J. E., García-Asencio, I. & Guerra-García, J. M., 2014, Littoral caprellids (Crustacea: Amphipoda) from the Mexican Central Pacific coast, with the description of four new species, pp. 77-127 in Journal of Natural History 49 (1) on pages 115-124, DOI: 10.1080/00222933.2014.937366, http://zenodo.org/record/4002539 : {"references": ["Mayer P. 1890. Die Caprelliden des Golfes von Neapel und der angrenzenden Meeres- Abschnitte. Fauna Flora Golf Neapel. 17: 1 - 55.", "Mayer P. 1903. Die Caprellidae der Siboga-Expedition. Siboga-Expeditie. 34: 1 - 160.", "McCain JC. 1967. Paracaprella barnardi, a new species of caprellid (Crustacea: Amphipoda) from the West Coast of Panama. Proc Biol Soc Wash. 80: 219 - 222.", "Quitete JMPA. 1971. Paracaprella digitimanus, nova especie de Caprellidae da costa brasileira (Crustacea: Amphipoda). Atas Soc Biol Rio do Janeiro. 14: 161 - 164.", "Winfield I, Ortiz M. 2013. The Caprellidea (Crustacea: Peracarida: Amphipoda) from the Gulf of Mexico with a description of a new species of Paracaprella. Sci Mar. 77: 161 - 168. doi: 10.3989 / scimar. 03753.26 C", "Arimoto I. 1980. Supplements to the Japanese caprellid fauna. I. Caprellids from the Korean Straits and adjacent waters. Publ Seto Mar Biol Lab. 25: 95 - 113.", "McCain JC. 1968. The Capreillidae (Crustacea: Amphipoda) of the Western North Atlantic. US Natl Mus Bull. 278: 1 - 147. doi: 10.5479 / si. 03629236.278", "Laubitz DR. 1972. The Caprellidae (Crustacea, Amphipoda) of Atlantic and Arctic Canada. Natl Mus Nat Sci, Ottawa, Publ Biol Oceanogr. 4: 1 - 82.", "Arimoto I. 1976. Taxonomic studies of caprellids (Crustacea, Amphipoda, Caprellidae) found in the Japanese and adjacent waters. Seto Mar Biol Lab, Spec Publ. 3: 1 - 229.", "Sivaprakasam TE. 1977. The skeleton shrimps (Amphipoda: Caprellidea) of the Tamil Nadu and Kerala coasts. J Mar Biol Assoc India. 19: 78 - 96.", "Diaz YJ, Guerra-Garcia JM, Martin A. 2005. Caprellids (Crustacea: Amphipoda: Caprellidae) from shallow waters of the Caribbean coast of Venezuela. Org Divers Evol. 5: 249 - 251. (Electr. Suppl. 5: 10: 1 - 25). doi: 10.1016 / j. ode. 2004.11.010", "Guerra-Garcia JM, Krapp-Schickel T, Muller HG. 2006. Caprellids from the caribbean coast of Colombia, South America, with description of three new species and a key for species identification. Bol INVEMAR. 35: 149 - 194.", "Ros M, Guerra-Garcia JM. 2012. On the occurrence of the tropical caprellid Paracaprella pusilla Mayer, 1890 (Crustacea: Amphipoda) in Europe. Mediterr Mar Sci. 13: 134 - 139.", "Ros M, Vazquez-Luis M, Guerra-Garcia JM. 2013. The tropical caprellid amphipod Paracaprella pusilla: a new alien crustacean in the Mediterranean Sea. Helgol Mar Res. doi: 10.1007 / s 10152 - 013 - 0353 - 4"]} Text Arctic North Atlantic DataCite Metadata Store (German National Library of Science and Technology) Arctic Canada Pacific Seta ENVELOPE(9.895,9.895,63.645,63.645) Ortiz ENVELOPE(-59.717,-59.717,-62.450,-62.450) Diaz ENVELOPE(-60.667,-60.667,-63.783,-63.783) Bol ENVELOPE(9.843,9.843,63.758,63.758) Vazquez ENVELOPE(-64.000,-64.000,-65.433,-65.433) Asencio ENVELOPE(-60.883,-60.883,-63.900,-63.900) |