Epimeria (Hoplepimeria) quasimodo d’Acoz & Verheye 2017
- Dataset
- Epimeria of the Southern Ocean with notes on their relatives (Crustacea, Amphipoda, Eusiroidea)
- Rank
- SPECIES
- Published in
- d’Acoz, Cédric d’Udekem, Verheye, Marie L. (2017): Epimeria of the Southern Ocean with notes on their relatives (Crustacea, Amphipoda, Eusiroidea). European Journal of Taxonomy 359: 1-553, DOI: 10.5852/ejt.2017.359
Classification
- kingdom
- Animalia
- phylum
- Arthropoda
- class
- Malacostraca
- order
- Amphipoda
- family
- Epimeriidae
- genus
- Epimeria
- species
- Epimeria quasimodo
biology_ecology
Biology Examination of the stomach content of fifteen specimens indicates that the species is carnivorous (Coleman 1991, as Epimeria georgiana).
description
Description ROSTRUM. Medium-sized, overreaching tip of article 1 of peduncle of antenna 1, anteriorly slightly curved, ventrally straight, blunt-tipped in lateral view; broad and with proximally nearly straight converging borders in frontal view. EYE. Fairly large, broadly elliptic. PEREION – PLEOSOME TOOTH PATTERN. Pereionite 1 smooth; pereionites 2 – 3 with weak posterior bump; pereionites 4 to pleonite 3 with low, non-toothed, very broad carina (very reduced in pereionites 2 – 3), those of pereionite 7 and pleonites 1 – 3 with very shallow concavity on anterior 0.4; posterodorsal angle of pleonite 3 broadly rounded; dorsolateral ornamentation absent. COXAE 1 – 3. Scarcely carinate and apically tapering and blunt (coxae 1 – 2) or subacute (coxa 3). COXA 4. Anterodorsal border nearly straight (very weakly sigmoid), anteroventral border weakly concave, these two borders being joined by blunt but very distinct angle (anterior corner), which is distinctly projecting forward; ventral corner forming a sharp squared angle (ventral projection short); lateral carina present not sharp; broad hollow surface between carina and posteroventral border of coxa; posteroventral border distinctly concave. COXA 5. Broad, with surface smooth, with posteroventral corner forming a rounded lobe, weakly expanded laterally, forming a broadly rounded obtuse (nearly squared) angle which is very distinct in dorsal view. COXA 6. With posteroventral corner rounded, with projection arising from its surface (broadly triangular in dorsal view). COXA 7. Posteriorly rounded. EPIMERAL PLATES 1 – 3. Posteroventral angle: forming an angle with a trace of tooth in plate 1, produced into a small tooth in plate 2 and into a medium-sized tooth in plate 3. UROSOME TOOTH PATTERN. Urosomite 1 with very low dorsal process, regularly convex on both sides; urosomite 3 with dorsolateral borders nearly straight (inconspicuously convex), with tip bluntly angular. TELSON. Cleft on 0.4; lobes broad becoming apically broadly and bluntly triangular, notch narrowly V-shaped. GNATHOPODS 1 – 2. Carpus and propodus very broad; propodus expanding distally, palm distinct. PEREIOPODS 5 – 7. Merus, carpus and propodus of medium width; dactylus medium-sized; basis of pereiopods 5 – 6 of normal width, with posteroproximal process present, tooth-like, parallel to axis of basis, with posterodistal corner bluntly angular, very weakly pointing in posterior direction; basis of pereiopod 7 broad with posterior border weakly convex, with distinct notch in distal 0.8, forming a blunt-tipped squared or acute angle, with posterodistal corner rounded and not projecting backwards. Colour pattern Red-coloured with the red pigmentation forming an irregular, finely mottled / dotted pattern; or whitish with very irregular and diffuse red patches, in which the red pigmentation is forming an irregular finely peppered pattern. Eyes reddish. Body length Up to 50 mm.
description
urn: lsid: zoobank. org: act: DA 484 D 99 - BC 6 E- 4 E 9 D-B 06 E- 9 D 775 DCB 7 FD 1 Figs 198 – 207
discussion
Remarks A juvenile E. quasimodo sp. nov. is illustrated herein (Fig. 207) to show the notch of the basis of pereiopod 7, which is much shallower than in adults. Epimeria quasimodo sp. nov. is a very common species, which was previously confused with E. georgiana. The latter is presumably endemic to South Georgia.
distribution
Distribution Elephant Island to tip of Antarctic Peninsula, 131 – 407 m.
etymology
Etymology Quasimodo, the hunchback of Notre-Dame, is a well-known character from the novel ‘ Notre-Dame de Paris’ by Victor Hugo. The name, which is a noun in apposition, alludes to the humpbacked silhouette of the species.
materials_examined
Type material Holotype RV Polarstern cruises: SOUTHERN OCEAN: ♀, cruise PS 81, ANT-XXIX / 3, stn 160 - 3, East of Joinville Island, 63 ° 10.57 ʹ S, 54 ° 06.66 ʹ W to 63 ° 10.71 ʹ S, 54 ° 06.37 ʹ W, 238 – 244 m, Agassiz trawl, 8 Feb. 2013 (RBINS, INV. 122930 A) [extraction K 23; Genbank nr, COI: KU 870857, 28 S: KU 759635]. Paratypes RV Polarstern cruises: SOUTHERN OCEAN: 1 ♀, cruise PS 14, ANT-VII / 4, EPOS leg 3, stn 211, Elephant Island, 60 ° 59.8 ʹ S, 55 ° 12.1 ʹ W to 60 ° 59.3 ʹ S, 55 ° 10.5 ʹ W, 207 – 213 m, bottom trawl, 15 Jan. 1989, coll. C. De Broyer (RBINS, INV. 132950); 3 specs, cruise PS 69, ANT-XXIII / 8, stn 604 - 1, Elephant Island, 61 ° 20.52 ʹ S, 55 ° 09.72 ʹ W to 61 ° 20.11 ʹ S, 55 ° 07.26 ʹ W, 286 – 407 m, bottom trawl, 19 Dec. 2006, coll. C. d’Udekem d’Acoz and H. Robert (RBINS, INV. 122467); 3 specs, cruise PS 69, ANT-XXIII / 8, stn 604 - 1, Elephant Island, 61 ° 20.52 ʹ S, 55 ° 09.72 ʹ W to 61 ° 20.11 ʹ S, 55 ° 07.26 ʹ W, 286 – 407 m, bottom trawl, 19 Dec. 2006, coll. C. d’Udekem d’Acoz and H. Robert (RBINS, INV. 122496); 2 specs, cruise PS 69, ANT-XXIII / 8, stn 604 - 1, Elephant Island, 61 ° 20.52 ʹ S, 55 ° 09.72 ʹ W to 61 ° 20.11 ʹ S, 55 ° 07.26 ʹ W, 286 – 407 m, bottom trawl, 19 Dec. 2006, coll. C. d’Udekem d’Acoz and H. Robert (RBINS, INV. 122500); 1 juv., cruise PS 69, ANT-XXIII / 8, stn 604 - 1, Elephant Island, 61 ° 20.52 ʹ S, 55 ° 09.72 ʹ W to 61 ° 20.11 ʹ S, 55 ° 07.26 ʹ W, 286 – 407 m, bottom trawl, 19 Dec. 2006, coll. C. d’Udekem d’Acoz and H. Robert (RBINS, INV. 122508); 1 spec., cruise PS 69, ANT-XXIII / 8, stn 605 - 1, Elephant Island, 61 ° 20.35 ʹ S, 55 ° 29.16 ʹ W to 61 ° 19.98 ʹ S, 55 ° 32.67 ʹ W, 146 – 151 m, bottom trawl, 19 Dec. 2006, coll. C. d’Udekem d’Acoz and H. Robert (RBINS, INV. 122504); 1 juv., cruise PS 69, ANT-XXIII / 8, stn 605 - 1, Elephant Island, 61 ° 20.35 ʹ S, 55 ° 29.16 ʹ W to 61 ° 19.98 ʹ S, 55 ° 32.67 ʹ W, 146 – 151 m, bottom trawl, 19 Dec. 2006, coll. C. d’Udekem d’Acoz and H. Robert (RBINS, INV. 122506); 4 specs, cruise PS 69, ANT-XXIII / 8, stn 605 - 5, Elephant Island, 61 ° 20.27 ʹ S, 55 ° 30.92 ʹ W to 61 ° 20.37 ʹ S, 55 ° 28.99 ʹ W, 131 – 152 m, Agassiz trawl, 20 Dec. 2006, coll. C. d’Udekem d’Acoz and H. Robert (RBINS, INV. 122501); 1 spec., cruise PS 69, ANT-XXIII / 8, stn 608 - 1, Elephant Island, 61 ° 11.34 ʹ S, 54 ° 43.17 ʹ W to 61 ° 11.80 ʹ S, 54 ° 40.05 ʹ W, 284 – 293 m, bottom trawl, 20 Dec. 2006, coll. C. d’Udekem d’Acoz and H. Robert (RBINS, INV. 122515); 3 specs, cruise PS 69, ANT-XXIII / 8, stn 608 - 1, Elephant Island, 61 ° 11.34 ʹ S, 54 ° 43.17 ʹ W to 61 ° 11.80 ʹ S, 54 ° 40.05 ʹ W, 284 – 293 m, bottom trawl, 20 Dec. 2006, coll. C. d’Udekem d’Acoz and H. Robert (RBINS, INV. 122498); 2 specs, cruise PS 69, ANT-XXIII / 8, stn 608 - 1, Elephant Island, 61 ° 11.34 ʹ S, 54 ° 43.17 ʹ W to 61 ° 11.80 ʹ S, 54 ° 40.05 ʹ W, 284 – 293 m, bottom trawl, 20 Dec. 2006, coll. C. d’Udekem d’Acoz and H. Robert (MNHN-IU- 2014 - 7334, removed from RBINS, INV. 122498); 1 spec., cruise PS 69, ANT-XXIII / 8, stn 611 - 1, Elephant Island, 60 ° 58.90 ʹ S, 55 ° 11.31 ʹ W to 60 ° 58.52 ʹ S, 55 ° 07.82 ʹ W, 215 – 297 m, bottom trawl, 21 Dec. 2006, coll. C. d’Udekem d’Acoz and H. Robert (RBINS, INV. 122558); 1 spec., initially fixed with formalin, cruise PS 69, ANT-XXIII / 8, stn 622 - 1, Elephant Island, 60 ° 56.70 ʹ S, 55 ° 52.71 ʹ W to 60 ° 55.93 ʹ S, 55 ° 50.79 ʹ W, 218 – 307 m, Agassiz trawl, 23 Dec. 2006, coll. C. d’Udekem d’Acoz and H. Robert (RBINS, INV. 122505); 7 specs, cruise PS 69, ANT-XXIII / 8, stn 654 - 6, Elephant Island, 61 ° 22.80 ʹ S, 56 ° 03.84 ʹ W to 61 ° 23.35 ʹ S, 56 ° 04.89 ʹ W, 341 – 342 m, Agassiz trawl, 29 Dec. 2006, coll. C. d’Udekem d’Acoz and H. Robert (RBINS, INV. 122499); 1 spec., cruise PS 69, ANT-XXIII / 8, stn 668 - 1, north of King George Island, 61 ° 49.32 ʹ S, 58 ° 34.74 ʹ W to 61 ° 50.05 ʹ S, 58 ° 30.67 ʹ W, 152 – 193 m, bottom trawl, 31 Dec. 2006, coll. C. d’Udekem d’Acoz and H. Robert (RBINS, INV. 122503); 1 spec., cruise PS 69, ANT-XXIII / 8, stn; 688 - 1, north of Joinville Island, 62 ° 32.27 ʹ S, 54 ° 57.55 ʹ W to 62 ° 33.59 ʹ S, 55 ° 0.22 ʹ W, bottom trawl, 4 Jan. 2007, coll. C. d’Udekem d’Acoz and H. Robert (RBINS, INV. 122495); 1 very large spec., cruise PS 69, ANT-XXIII / 8, stn 692 - 1, north of Joinville Island, 62 ° 21.76 ʹ S, 55 ° 36.96 ʹ W to 62 ° 23.62 ʹ S, 55 ° 36.42 ʹ W, 263 – 277 m, bottom trawl, 5 Jan. 2007, coll. C. d’Udekem d’Acoz and H. Robert (RBINS, INV. 122497); 1 juv., cruise PS 69, ANT- XXIII / 8, stn 726 - 4, southwest of Snow Hill Island, 64 ° 37.83 ʹ S, 56 ° 42.10 ʹ W to 64 ° 38.03 ʹ S, 56 ° 42.57 ʹ W, 292 m, Agassiz trawl, 23 Jan. 2007, coll. C. d’Udekem d’Acoz and H. Robert (RBINS, INV. 122507); 2 ♀♀, cruise PS 81, ANT-XXIX / 3, stn 116 - 9, north of Joinville Island, 62 ° 33.79 ʹ S, 56 ° 27.81 ʹ W to 62 ° 33.71 ʹ S, 56 ° 28.31 ʹ W, 248 m, muddy bottom with stones, Pentapora - like bryozoans and a lot of life, Agassiz trawl, 26 Jan. 2013 (RBINS, INV. 122920) [extractions K 27 (largest specimen); Genbank nr, COI: KU 870861, 28 S: KU 759639 and K 28 (smallest specimen), Genbank nr, COI: KU 870862, 28 S: KU 759640]; 1 juv., cruise PS 81, ANT-XXIX / 3, stn 160 - 3, East of Joinville Island, 63 ° 10.57 ʹ S, 54 ° 6.66 ʹ W to 63 ° 10.71 ʹ S, 54 ° 6.37 ʹ W, 238 – 244 m, Agassiz trawl, 8 Feb. 2013 (RBINS, INV. 122930 B); 1 ♀, cruise PS 81, ANT-XXIX / 3, stn 160 - 3, East of Joinville Island, 63 ° 10.57 ʹ S, 54 ° 6.66 ʹ W to 63 ° 10.71 ʹ S, 54 ° 6.37 ʹ W, 238 – 244 m, Agassiz trawl, 8 Feb. 2013 (RBINS, INV. 122933) [extraction K 24; Genbank nr, COI: KU 870858, 28 S: KU 759636]; 1 immature spec., cruise PS 81, ANT-XXIX / 3, stn 162 - 7, east of James Ross Island, 63 ° 58.78 ʹ S, 56 ° 46.24 ʹ W to 63 ° 59.02 ʹ S, 56 ° 46.26 ʹ W, 214 – 216 m, muddy bottom with a lot of life, Agassiz trawl, 10 Feb. 2013, coll. C. d’Udekem d’Acoz and M. Verheye (RBINS, INV. 122952); 1 very large spec., cruise PS 81, ANT-XXIX / 3, stn 162 - 7, east of James Ross Island, 63 ° 58.78 ʹ S, 56 ° 46.24 ʹ W to 63 ° 59.02 ʹ S, 56 ° 46.26 ʹ W, 214 – 216 m, muddy bottom with a lot of life, Agassiz trawl, 10 Feb. 2013, coll. C. d’Udekem d’Acoz and M. Verheye (RBINS, INV. 122952); 1 very large spec., cruise PS 81, ANT-XXIX / 3, stn 164 - 4, south of Dundee Island, 63 ° 37.28 ʹ S, 56 ° 9.11 ʹ W to 63 ° 37.29 ʹ S, 56 ° 9.58 ʹ W, 102 – 114 m, non-muddy bottom with a lot of life, including Molgula, big red ophiuroids, and a lot of Glyptonotus, 11 Feb. 2013, coll. C. d’Udekem d’Acoz and M. Verheye (RBINS, INV. 122923) [extraction K 29; Genbank nr, COI: KU 870863, 28 S: KU 759641]; 1 very large ♀, cruise PS 81, ANT-XXIX / 3, stn 164 - 4, south of Dundee Island, 63 ° 37.28 ʹ S, 56 ° 9.11 ʹ W to 63 ° 37.29 ʹ S, 56 ° 9.58 ʹ W, 102 – 114 m, non-muddy bottom with a lot of life, including Molgula, big red ophiuroids, and a lot of Glyptonotus, Agassiz trawl, 11 Feb. 2013, coll. C. d’Udekem d’Acoz and M. Verheye (RBINS, INV. 122925) [extraction K 30; Genbank nr, COI: KU 870864, 28 S: KU 759643]; 1 ♀, cruise PS 81, ANT- XXIX / 3, stn 185 - 3, south east of Dundee Island, 63 ° 51.34 ʹ S, 55 ° 41.11 ʹ W to 63 ° 51.52 ʹ S, 55 ° 41.43 ʹ W, Agassiz trawl, 238 – 244 m, not muddy bottom with a lot of life (sponges, starfishes, ophiuroids, crinoids, Pentapora - like bryozoans), Agassiz trawl, 19 Feb. 2013, coll. C. d’Udekem d’Acoz and M. Verheye (RBINS, INV. 122921 A) [extraction K 26; Genbank, COI nr: KU 870860, 28 S: KU 759638] [the station given by Verheye et al. (2016 a) is incorrect]; 1 adult ♀, cruise PS 81, ANT-XXIX / 3, stn 185 - 3, south east of Dundee Island, 63 ° 51.34 ʹ S, 55 ° 41.11 ʹ W to 63 ° 51.52 ʹ S, 55 ° 41.43 ʹ W, Agassiz trawl, 238 – 244 m, not muddy bottom with a lot of life (sponges, starfishes, ophiuroids, crinoids, Pentapora - like bryozoans), Agassiz trawl, 19 Feb. 2013, coll. C. d’Udekem d’Acoz and M. Verheye, dissected and photographed (RBINS, INV. 122921 B) [extraction P 35; Genbank nr, COI: KU 870893, 28 S: KU 759679]; 2 immature spec., cruise PS 81, ANT-XXIX / 3, stn 185 - 3, south east of Dundee Island, 63 ° 51.34 ʹ S, 55 ° 41.11 ʹ W to 63 ° 51.52 ʹ S, 55 ° 41.43 ʹ W, Agassiz trawl, 238 – 244 m, not muddy bottom with a lot of life (sponges, starfishes, ophiuroids, crinoids, Pentapora - like bryozoans), Agassiz trawl, 19 Feb. 2013, coll. C. d’Udekem d’Acoz and M. Verheye (RBINS, INV. 122921 C) [extraction P 37; Genbank nr, COI: KU 870894, 28 S: KU 759681]; 1 spec., cruise PS 81, ANT-XXI / 3, stn 185 - 4, south east of Dundee Island, 63 ° 51.53 ʹ S, 55 ° 40.74 ʹ W to 63 ° 51.53 ʹ S, 55 ° 40.43 ʹ W, 253 – 255 m, extremely fine sand mixed with some mud and gravel, Rauschert dredge, 19 Feb. 2013 coll. C. d’Udekem d’Acoz and M. Verheye (RBINS, INV. 132971) [extraction I 20; Genbank nr, COI: KU 870846, 28 S: KU 759623]; 1 ♀, cruise PS 81, ANT-XXIX / 3, stn 197 - 5, Bransfield Strait, 62 ° 44.73 ʹ S, 57 ° 26.79 ʹ W to 62 ° 45.05 ʹ S, 57 ° 26.68 ʹ W, 258 – 273 m, Agassiz trawl, 25 Feb. 2013, coll. C. d’Udekem d’Acoz and M. Verheye (RBINS, INV. 122867) [extraction ANT 41; Genbank nr, COI: KU 870827, 28 S: KU 759600]; 1 ♀, cruise PS 81, ANT- XXIX / 3, stn 197 - 6, Bransfield Strait, 62 ° 45.05 ʹ S, 57 ° 26.68 ʹ W to 62 ° 45.09 ʹ S, 57 ° 26.47 ʹ W, 210 – 222 m, black gravel mixed with sand and a little bit of mud, Rauschert dredge, 25 Feb. 2013, coll. C. d’Udekem d’Acoz and M. Verheye (RBINS, INV. 122954); 1 juv., cruise PS 81, ANT-XXIX / 3, stn 197 - 6, Bransfield Strait, 62 ° 45.05 ʹ S, 57 ° 26.68 ʹ W to 62 ° 45.09 ʹ S, 57 ° 26.47 ʹ W, 210 – 222 m, black gravel mixed with sand and a little bit of mud, Rauschert dredge, 25 Feb. 2013, coll. C. d’Udekem d’Acoz and M. Verheye (RBINS, INV. 122954); 1 spec., cruise PS 81, ANT-XXIX / 3, stn 205 - 1, Bransfield Strait, 63 ° 2.35 ʹ S, 58 ° 3.63 ʹ W to 63 ° 2.67 ʹ S, 58 ° 6.46 ʹ W, depth unrecorded [Google Earth coordinates for these positions: 155 – 178 m (accessed 27 Sep. 2016], rectangular midwater trawl (which presumably hit the sea floor, as it was supposed to sample between 0 and 200 m depth), 28 Feb. 2013, coll. C. d’Udekem d’Acoz and M. Verheye (RBINS, INV. 122970); 1 ♀, cruise PS 81, ANT-XXIX / 3, stn 224 - 3, Bransfield Strait, 63 ° 0.53 ʹ S, 58 ° 35.67 ʹ W to 63 ° 0.58 ʹ S, 58 ° 36.11 ʹ W, 257 – 261 m, mud, Agassiz trawl, 4 Mar. 2013, coll. C. d’Udekem d’Acoz and M. Verheye (RBINS, INV. 122924) [extraction K 22; Genbank nr, COI: KU 870856, 28 S: KU 759634]; 1 very large ♀, cruise PS 81, ANT-XXIX / 3, stn 224 - 3, Bransfield Strait, 63 ° 0.53 ʹ S, 58 ° 35.67 ʹ W to 63 ° 0.58 ʹ S, 58 ° 36.11 ʹ W, 257 – 261 m, mud, Agassiz trawl, 4 Mar. 2013, red colour, coll. C. d’Udekem d’Acoz and M. Verheye (RBINS, INV. 122926) [extraction K 21; Genbank nr, COI: KU 870855, 28 S: KU 759633]; 1 ♀, cruise PS 81, ANT-XXIX / 3, stn 224 - 3, Bransfield Strait, 63 ° 0.53 ʹ S, 58 ° 35.67 ʹ W to 63 ° 0.58 ʹ S, 58 ° 36.11 ʹ W, 257 – 261 m, mud, Agassiz trawl, 4 Mar. 2013, coll. C. d’Udekem d’Acoz and M. Verheye (RBINS, INV. 122953); 3 large specs, cruise PS 81, ANT-XXIX / 3, stn 224 - 3, Bransfield Strait, 63 ° 0.53 ʹ S, 58 ° 35.67 ʹ W to 63 ° 0.58 ʹ S, 58 ° 36.11 ʹ W, 257 – 261 m, mud, Agassiz trawl, 4 Mar. 2013, coll. C. d’Udekem d’Acoz and M. Verheye (RBINS, INV. 122957); 1 ♀, cruise PS 81, ANT-XXIX / 3, stn 234 - 5, north of Livingstone Island, 62 ° 17.36 ʹ S, 61 ° 12.06 ʹ W to 62 ° 17.31 ʹ S, 61 ° 12.63 ʹ W, 248 – 251 m, mud with a lot of specimens of a small reddish ophiuroid with very long and flexible legs, Agassiz trawl, 7 Mar. 2013, coll. C. d’Udekem d’Acoz and M. Verheye (RBINS, INV. 132970) [extraction I 14; Genbank nr, COI: KU 870840, 28 S: KU 759616].