Galathella Barnard &amp; Karaman 1987
Creators: name: Lowry, J. K.
name: Stoddart, H. E.
Publisher: name: Zenodo
Year: 1995
Subjects: Biodiversity
Taxonomy
Animalia
Arthropoda
Malacostraca
Amphipoda
Uristidae
Galathella

description: <i>Galathella</i> Barnard &amp; Karaman <i>Galathella</i> Barnard &amp; Karaman, 1987: 866.-Barnard &amp; Karaman, 1991: 488. <b>Diagnosis.</b> <i>Head:</i> lateral cephalic lobe apically rounded. <i>Antenna</i> 1: peduncular article 1 without posterodistal tooth; callynophore well developed in female and male, without posterodistal simple or robust setae. Upper lip/ epistome separate. <i>Mandible:</i> molar setose, with reduced distal triturating surface; mandibular palp with proximal A3-setae, with slender, blade-like article 3. <i>Maxilla 2:</i> outer plate longer than inner plate, without extremely elongate setae. <i>Maxilliped:</i> outer plate distomedially rounded. <i>Gnathopod</i> 1: simple to weakly subchelate; coxa slightly shorter than coxa 2, tapering distally; ischium long, carpus very long. <i>Peraeopods</i> 3 <i>and 4:</i> males without plumose setae on posterior margin of merus and carpus. <i>Epimeron</i> 3: posteroventrally produced. <i>Telson:</i> moderately to deeply cleft. <b>Type species.</b> <i>Schisturella galatheae</i> Dahl, 1959, original designation. <b>Species composition.</b> <i>Galathella</i> contains G. <i>bassiana</i> n.sp., G. <i>galatheae</i> (Dahl, 1959), G. <i>latipes</i> (Ledoyer, 1986) and G. <i>palana</i> n.sp. <b>Remarks.</b> Of those genera with a tapering first coxa only <i>Centromedon</i> Sars, 1891 and <i>Galathella</i> have a 7/4 crown setal-tooth arrangement on the outer plate of maxilla 1. <i>Centromedon</i> differs from <i>Galathella</i> as follows: the lateral cephalic lobe is subacute; there is no callynophore in the female; the molar is less developed; the mandibular palp has no proximal A3- setae; and the posteroventral corner of epimeron 3 is produced into a large spine. Similarities between the two genera are striking. The parallel development of gnathopod 1 within each genus is particularly noticeable. Each genus has species in which gnathopod 1 is simple with long carpus and propodus, weakly subchelate with the palm extremely acute, or strongly subchelate with nearly transverse pahns. Species of <i>Centromedon</i> are currently known from northern hemisphere Arctic and temperate regions and lower latitudes in abyssal depths. Species of <i>Galathella</i> are currently known from southern hemisphere tropical and temperate regions in shallow to abyssal depths. Alllysianassoid species which have a 7/4 crown setaltooth arrangement, and for which the life style is known, spend at least part of their life history as scavengers or micropredators (e.g., Dahl, 1979; Sainte-Marie, 1984; Sainte-Marie &amp; Lamarche, 1985; Lowry &amp; Stoddart, 1992). It is therefore highly probable that species in <i>Galathella</i> are demersal scavengers and/or micropredators. <b>Distribution.</b> Kermadec Trench (7000 m), south-eastern Australia (600 to 1850 m), south-western Pacific Ocean; lIes Glorieuses, western Indian Ocean (28 m). <b>Key to the species of</b> <i>Galathella</i> 1. 2. 3. Maxilla 1 palp with short conate terminal setae; peraeopod 7, merus slightly expanded, margins subparallel................................................ G. <i>galatheae</i> --Maxilla1palp with long conate terminal setae; peraeopod7, TODO TODO TODO merusexpanded expanded,posterior marginrounded............................................................... <i>latipes</i>
description: Published as part of <i>Lowry, J. K. &amp; Stoddart, H. E., 1995, New lysianassoid genera and species from south-eastern Australia (Crustacea: Amphipoda), pp. 7-25 in Records of the Australian Museum 47 (1)</i> on pages 12-13, DOI: 10.3853/j.0067-1975.47.1995.5, http://zenodo.org/record/4654764
description: {"references": ["Dahl, E., 1959. Amphipoda from depths exceeding 6000 meters. Galathea Report 1: 211 - 241.", "Ledoyer, M., 1986. Crustaces Amphipodes Gammariens. Familles des Haustoriidae a Vitjazianidae. Faune de Madagascar 59 (2): 599 - 1112.", "Sars, G. O., 1891. An Account of the Crustacea of Norway, with Short Descriptions and Figures of all the Species. VoI. 1. Amphipoda. Parts 4 - 9. Alb. Cammermeyer, Christiana, pp 69 - 212, pIs 25 - 72.", "Dahl, E., 1979. Deep-sea carrion feeding amphipods: evolutionary patterns in niche adaptation. Oikos 33 (2): 167 - 175.", "Sainte-Marie, B., 1984. Morphological adaptations for carrion feeding in four species of littoral or circalittoral lysianassid amphipods. Canadian Journal of Zoology 62 (9): 1668 - 1674."]}