Jassa alonsoae Conlan 1990

Jassaalonsoae Conlan, 1990 (Table 13, Figs 88–91) Diagnosis. Both sexes: Mandibular palp : article 2, dorsal margin without a fringe of setae. Maxilla 1 : without a seta or setal cluster at the base of the palp article 1. Gnathopod 1 : basis, anterolateral margin with a row of short setae along its...

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Main Authors: Conlan, Kathleen E., Desiderato, Andrea, Beermann, Jan
Format: Text
Language:unknown
Published: Zenodo 2021
Subjects:
Online Access:https://dx.doi.org/10.5281/zenodo.4580594
https://zenodo.org/record/4580594
id ftdatacite:10.5281/zenodo.4580594
record_format openpolar
institution Open Polar
collection DataCite Metadata Store (German National Library of Science and Technology)
op_collection_id ftdatacite
language unknown
topic Biodiversity
Taxonomy
Animalia
Arthropoda
Malacostraca
Amphipoda
Ischyroceridae
Jassa
Jassa alonsoae
spellingShingle Biodiversity
Taxonomy
Animalia
Arthropoda
Malacostraca
Amphipoda
Ischyroceridae
Jassa
Jassa alonsoae
Conlan, Kathleen E.
Desiderato, Andrea
Beermann, Jan
Jassa alonsoae Conlan 1990
topic_facet Biodiversity
Taxonomy
Animalia
Arthropoda
Malacostraca
Amphipoda
Ischyroceridae
Jassa
Jassa alonsoae
description Jassaalonsoae Conlan, 1990 (Table 13, Figs 88–91) Diagnosis. Both sexes: Mandibular palp : article 2, dorsal margin without a fringe of setae. Maxilla 1 : without a seta or setal cluster at the base of the palp article 1. Gnathopod 1 : basis, anterolateral margin with a row of short setae along its length; carpus with a cluster of moderately long setae at the anterodistal junction of the propodus (setal length about 1/3 the length of the anterior margin). Gnathopod 2 : basis with a row of setae along the anterolateral margin (at least some setal lengths>40% of the basis width); carpus and propodus, setae on the anterior margin short and simple (setal length <basis width). Pereopods 5–7 : propodus not expanded anteriorly. Uropod 1 : ventral peduncular spinous process underlying about 1/3 of the longest ramus. Uropod 3 : inner ramus without spines mid-dorsally (with only the single apical spine). Telson : tip without apical setae (only the usual short setae at each dorsolateral cusp). Thumbed male: Antenna 2 : without plumose setae on the flagellum and peduncular article 5. Gnathopod 2 : propodus, palmar defining spines not produced on a ledge, present in small thumbed males but absent in large thumbed males. In major males, the thumb is distally squared, the posterior margin sinuous. The dactyl is expanded close to the junction with the propodus but is not centrally toothed. Minor form males have a short, squared thumb and a dactyl tooth. Subadult males have a small prethumb. Adult female: Antenna 2 : large animals without plumose setae on the flagellum and peduncular article 5. Gnathopod 2 : propodus, palmsinuous. Remarks. Jassa alonsoae , J. justi, J. fenwicki , J. ingens and J. hartmannae have a fringe of setae along the anterior margin of gnathopod 1 which may be robust and spine-like (Figs 88–90, 92, 95, 99 and 104). Jassa alonsoae differs from the others in having long setae on the basis of gnathopod 2 while the others have short setae similar to the basis of gnathopod 1. The row of setae on the gnathopod 1 basis is a distinctive character, which is only known for these Southern Hemisphere species. However, it is difficult to see on small animals and in J. ingens the setae do not run the full length in all animals (Fig. 99). The other Southern Hemisphere species ( J. thurstoni , J. kjetilanna and J. gruneri ) seem to lack this fringe although there can be minute setae present (Figs 93, 96 and 102). The sinuous shape of the female’s gnathopod 2 palm is a feature of several (but not all) Southern Hemisphere species also ( J. alonsoae, J. thurstoni, J. fenwicki, J. kjetilanna, J. ingens and J. gruneri ) (Figs 88, 90, 93, 95, 97, 100 and 102). However, it is not unique to the Southern Hemisphere as the other two Southern Hemisphere species, J. justi and J. hartmannae have shallowly concave palms (Figs 92 and 104) and the Northern Hemisphere J. myersi has a sinuous palm (Fig. 85). The other Northern Hemisphere species (and the transhemispheric species) have more clearly concave palms. Jassa alonsoae has been found more frequently than the other Southern Hemisphere species (Fig. 11). It has a wide longitudinal range but has not been found south of 60°S. Specimens described by Stephensen (1949) as “ Jassa pulchella ” w ere examined (SNM) and are J. alonsoae . Conlan (1990) noted other mis-identifications. Monod (1926) mentioned a collection of “ J. falcata ” from the carapace of the spider crab Eurypodius latreilli in the Strait of Magellan. Although these specimens have not been seen, they may be Jassa alonsoae as this species has been collected in this area and it was found on spider crabs in a Falkland Island collection (AM P.31689). Monod’s illustration of the female gnathopod 2 resembles that of J. alonsoae . Stebbing’s (1888) “ Podocerus falcatus ” from Greenland Harbour, Kerguelen Island ( Challenger station 149E) may also be J. alonsoae . Its sinuous gnathopod 2 palm suggests an indigenous Southern Hemisphere species and J. alonsoae is the only species known from Kerguelen Island (Fig. 11). It is figured by Stebbing (1888) on Plate CXIX along with a female collected off the ship’s screw at Challenger station 142, off South Africa. Examination of this female (NHM) found that it is not J. alonsoae but J. marmorata . A description of the Challenger stations at http://www.19thcenturyscience.org/HMSC/HMSC-INDEX/index-linked.htm indicates that there was a second collection of Jassa at Kerguelen Island ( Challenger station 149) but this was from the ship’s screw “after leaving the Cape ”. Examination of this collection found it to be also Jassa marmorata , indicating that this species was travelling with the ship. : Published as part of Conlan, Kathleen E., Desiderato, Andrea & Beermann, Jan, 2021, Jassa (Crustacea: Amphipoda): a new morphological and molecular assessment of the genus, pp. 1-191 in Zootaxa 4939 (1) on pages 138-143, DOI: 10.11646/zootaxa.4939.1.1, http://zenodo.org/record/4580622 : {"references": ["Conlan, K. E. (1990) Revision of the crustacean amphipod genus Jassa Leach (Corophioidea: Ischyroceridae). Canadian Journal of Zoology, 68, 2031 - 2075. https: // doi. org / 10.1139 / z 90 - 288", "Stephensen, K. (1949) The Amphipoda of Tristan da Cunha. Results of the Norwegian Scientific Expedition to Tristan da Cunha 1937 - 1938, 3 (19), 1 - 61.", "Monod, T. (1926) Tanaidaces, Isopodes et Amphipodes. In: Commission de la \" Belgica \" (corp. auth.), Expedition Antarctique Belge: Resultats du Voyage de la Belgica en 1897 - 1899 Sous le Commandement de A. de Gerlache de Gomery (Zoology). J. - E. Buschmann, Anvers, pp. 1 - 67.", "Stebbing, T. R. R. (1888) Report on the Amphipoda collected by HMS ' Challenger' during the years 1873 - 1876. Report on the Scientific Results of the Voyage of HMS ' Challenger' during the years 1873 - 1876, Zoology, 29, 1 - 1737."]}
format Text
author Conlan, Kathleen E.
Desiderato, Andrea
Beermann, Jan
author_facet Conlan, Kathleen E.
Desiderato, Andrea
Beermann, Jan
author_sort Conlan, Kathleen E.
title Jassa alonsoae Conlan 1990
title_short Jassa alonsoae Conlan 1990
title_full Jassa alonsoae Conlan 1990
title_fullStr Jassa alonsoae Conlan 1990
title_full_unstemmed Jassa alonsoae Conlan 1990
title_sort jassa alonsoae conlan 1990
publisher Zenodo
publishDate 2021
url https://dx.doi.org/10.5281/zenodo.4580594
https://zenodo.org/record/4580594
long_lat ENVELOPE(140.900,140.900,-66.735,-66.735)
ENVELOPE(-64.259,-64.259,-65.247,-65.247)
ENVELOPE(9.895,9.895,63.645,63.645)
ENVELOPE(69.500,69.500,-49.250,-49.250)
ENVELOPE(99.033,99.033,-66.500,-66.500)
ENVELOPE(-63.500,-63.500,-64.600,-64.600)
ENVELOPE(-62.333,-62.333,-64.500,-64.500)
ENVELOPE(-126.747,-126.747,56.163,56.163)
ENVELOPE(16.261,16.261,67.903,67.903)
ENVELOPE(70.203,70.203,-49.626,-49.626)
ENVELOPE(-116.836,-116.836,55.617,55.617)
geographic Kerguelen
Greenland
Tristan
Thumb
Seta
Kerguelen Island
Gerlache
Anvers
De Gerlache
The Thumb
Jassa
Greenland Harbour
Kathleen
geographic_facet Kerguelen
Greenland
Tristan
Thumb
Seta
Kerguelen Island
Gerlache
Anvers
De Gerlache
The Thumb
Jassa
Greenland Harbour
Kathleen
genre Antarc*
Antarctique*
Greenland
genre_facet Antarc*
Antarctique*
Greenland
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spelling ftdatacite:10.5281/zenodo.4580594 2023-05-15T13:58:11+02:00 Jassa alonsoae Conlan 1990 Conlan, Kathleen E. Desiderato, Andrea Beermann, Jan 2021 https://dx.doi.org/10.5281/zenodo.4580594 https://zenodo.org/record/4580594 unknown Zenodo http://zenodo.org/record/4580622 http://publication.plazi.org/id/FF8DFFA2FFB5D918C95F1B11FFF4FFF9 http://zoobank.org/F33F42D0-A139-4CE3-97D7-1314C12CF86B https://zenodo.org/communities/biosyslit https://dx.doi.org/10.11646/zootaxa.4939.1.1 http://zenodo.org/record/4580622 http://publication.plazi.org/id/FF8DFFA2FFB5D918C95F1B11FFF4FFF9 https://dx.doi.org/10.5281/zenodo.4580844 https://dx.doi.org/10.5281/zenodo.4580846 https://dx.doi.org/10.5281/zenodo.4580848 https://dx.doi.org/10.5281/zenodo.4580852 https://dx.doi.org/10.5281/zenodo.4580856 https://dx.doi.org/10.5281/zenodo.4580862 https://dx.doi.org/10.5281/zenodo.4580870 https://dx.doi.org/10.5281/zenodo.4581028 https://dx.doi.org/10.5281/zenodo.4580858 https://dx.doi.org/10.5281/zenodo.4580864 https://dx.doi.org/10.5281/zenodo.4581024 https://dx.doi.org/10.5281/zenodo.4580866 https://dx.doi.org/10.5281/zenodo.4580872 https://dx.doi.org/10.5281/zenodo.4580838 https://dx.doi.org/10.5281/zenodo.4580658 http://zoobank.org/F33F42D0-A139-4CE3-97D7-1314C12CF86B https://dx.doi.org/10.5281/zenodo.4580593 https://zenodo.org/communities/biosyslit Open Access info:eu-repo/semantics/openAccess Biodiversity Taxonomy Animalia Arthropoda Malacostraca Amphipoda Ischyroceridae Jassa Jassa alonsoae Text Taxonomic treatment article-journal ScholarlyArticle 2021 ftdatacite https://doi.org/10.5281/zenodo.4580594 https://doi.org/10.11646/zootaxa.4939.1.1 https://doi.org/10.5281/zenodo.4580844 https://doi.org/10.5281/zenodo.4580846 https://doi.org/10.5281/zenodo.4580848 https://doi.org/10.5281/zenodo.4580852 https: 2021-11-05T12:55:41Z Jassaalonsoae Conlan, 1990 (Table 13, Figs 88–91) Diagnosis. Both sexes: Mandibular palp : article 2, dorsal margin without a fringe of setae. Maxilla 1 : without a seta or setal cluster at the base of the palp article 1. Gnathopod 1 : basis, anterolateral margin with a row of short setae along its length; carpus with a cluster of moderately long setae at the anterodistal junction of the propodus (setal length about 1/3 the length of the anterior margin). Gnathopod 2 : basis with a row of setae along the anterolateral margin (at least some setal lengths>40% of the basis width); carpus and propodus, setae on the anterior margin short and simple (setal length <basis width). Pereopods 5–7 : propodus not expanded anteriorly. Uropod 1 : ventral peduncular spinous process underlying about 1/3 of the longest ramus. Uropod 3 : inner ramus without spines mid-dorsally (with only the single apical spine). Telson : tip without apical setae (only the usual short setae at each dorsolateral cusp). Thumbed male: Antenna 2 : without plumose setae on the flagellum and peduncular article 5. Gnathopod 2 : propodus, palmar defining spines not produced on a ledge, present in small thumbed males but absent in large thumbed males. In major males, the thumb is distally squared, the posterior margin sinuous. The dactyl is expanded close to the junction with the propodus but is not centrally toothed. Minor form males have a short, squared thumb and a dactyl tooth. Subadult males have a small prethumb. Adult female: Antenna 2 : large animals without plumose setae on the flagellum and peduncular article 5. Gnathopod 2 : propodus, palmsinuous. Remarks. Jassa alonsoae , J. justi, J. fenwicki , J. ingens and J. hartmannae have a fringe of setae along the anterior margin of gnathopod 1 which may be robust and spine-like (Figs 88–90, 92, 95, 99 and 104). Jassa alonsoae differs from the others in having long setae on the basis of gnathopod 2 while the others have short setae similar to the basis of gnathopod 1. The row of setae on the gnathopod 1 basis is a distinctive character, which is only known for these Southern Hemisphere species. However, it is difficult to see on small animals and in J. ingens the setae do not run the full length in all animals (Fig. 99). The other Southern Hemisphere species ( J. thurstoni , J. kjetilanna and J. gruneri ) seem to lack this fringe although there can be minute setae present (Figs 93, 96 and 102). The sinuous shape of the female’s gnathopod 2 palm is a feature of several (but not all) Southern Hemisphere species also ( J. alonsoae, J. thurstoni, J. fenwicki, J. kjetilanna, J. ingens and J. gruneri ) (Figs 88, 90, 93, 95, 97, 100 and 102). However, it is not unique to the Southern Hemisphere as the other two Southern Hemisphere species, J. justi and J. hartmannae have shallowly concave palms (Figs 92 and 104) and the Northern Hemisphere J. myersi has a sinuous palm (Fig. 85). The other Northern Hemisphere species (and the transhemispheric species) have more clearly concave palms. Jassa alonsoae has been found more frequently than the other Southern Hemisphere species (Fig. 11). It has a wide longitudinal range but has not been found south of 60°S. Specimens described by Stephensen (1949) as “ Jassa pulchella ” w ere examined (SNM) and are J. alonsoae . Conlan (1990) noted other mis-identifications. Monod (1926) mentioned a collection of “ J. falcata ” from the carapace of the spider crab Eurypodius latreilli in the Strait of Magellan. Although these specimens have not been seen, they may be Jassa alonsoae as this species has been collected in this area and it was found on spider crabs in a Falkland Island collection (AM P.31689). Monod’s illustration of the female gnathopod 2 resembles that of J. alonsoae . Stebbing’s (1888) “ Podocerus falcatus ” from Greenland Harbour, Kerguelen Island ( Challenger station 149E) may also be J. alonsoae . Its sinuous gnathopod 2 palm suggests an indigenous Southern Hemisphere species and J. alonsoae is the only species known from Kerguelen Island (Fig. 11). It is figured by Stebbing (1888) on Plate CXIX along with a female collected off the ship’s screw at Challenger station 142, off South Africa. Examination of this female (NHM) found that it is not J. alonsoae but J. marmorata . A description of the Challenger stations at http://www.19thcenturyscience.org/HMSC/HMSC-INDEX/index-linked.htm indicates that there was a second collection of Jassa at Kerguelen Island ( Challenger station 149) but this was from the ship’s screw “after leaving the Cape ”. Examination of this collection found it to be also Jassa marmorata , indicating that this species was travelling with the ship. : Published as part of Conlan, Kathleen E., Desiderato, Andrea & Beermann, Jan, 2021, Jassa (Crustacea: Amphipoda): a new morphological and molecular assessment of the genus, pp. 1-191 in Zootaxa 4939 (1) on pages 138-143, DOI: 10.11646/zootaxa.4939.1.1, http://zenodo.org/record/4580622 : {"references": ["Conlan, K. E. (1990) Revision of the crustacean amphipod genus Jassa Leach (Corophioidea: Ischyroceridae). Canadian Journal of Zoology, 68, 2031 - 2075. https: // doi. org / 10.1139 / z 90 - 288", "Stephensen, K. (1949) The Amphipoda of Tristan da Cunha. Results of the Norwegian Scientific Expedition to Tristan da Cunha 1937 - 1938, 3 (19), 1 - 61.", "Monod, T. (1926) Tanaidaces, Isopodes et Amphipodes. In: Commission de la \" Belgica \" (corp. auth.), Expedition Antarctique Belge: Resultats du Voyage de la Belgica en 1897 - 1899 Sous le Commandement de A. de Gerlache de Gomery (Zoology). J. - E. Buschmann, Anvers, pp. 1 - 67.", "Stebbing, T. R. R. (1888) Report on the Amphipoda collected by HMS ' Challenger' during the years 1873 - 1876. Report on the Scientific Results of the Voyage of HMS ' Challenger' during the years 1873 - 1876, Zoology, 29, 1 - 1737."]} Text Antarc* Antarctique* Greenland DataCite Metadata Store (German National Library of Science and Technology) Kerguelen Greenland Tristan ENVELOPE(140.900,140.900,-66.735,-66.735) Thumb ENVELOPE(-64.259,-64.259,-65.247,-65.247) Seta ENVELOPE(9.895,9.895,63.645,63.645) Kerguelen Island ENVELOPE(69.500,69.500,-49.250,-49.250) Gerlache ENVELOPE(99.033,99.033,-66.500,-66.500) Anvers ENVELOPE(-63.500,-63.500,-64.600,-64.600) De Gerlache ENVELOPE(-62.333,-62.333,-64.500,-64.500) The Thumb ENVELOPE(-126.747,-126.747,56.163,56.163) Jassa ENVELOPE(16.261,16.261,67.903,67.903) Greenland Harbour ENVELOPE(70.203,70.203,-49.626,-49.626) Kathleen ENVELOPE(-116.836,-116.836,55.617,55.617)