Devo dubuc, Lowry & Stoddart, 2002

Lowry, J. K. & Stoddart, H. E., 2002, The Amaryllididae of Australia (Crustacea: Amphipoda: Lysianassoidea), Records of the Australian Museum 54, pp. 129-214 : 204

publication ID	2201-4349
DOI	https://doi.org/10.5281/zenodo.5239763
persistent identifier	https://treatment.plazi.org/id/783187C3-FF8E-FFD6-1A4B-F159947BFD5A
treatment provided by	Felipe
scientific name	Devo dubuc
status	sp. nov.

Treatment

Devo dubuc View in CoL n.sp.

Figs. 71, 72

Type material. HOLOTYPE, female, 7.2 mm, with non-setose oostegites, NMV J48795 View Materials ; 1 PARATYPE, male, 7.5 mm, NMV J48794 View Materials ; 1 PARATYPE, male, 7.4 mm, NMV J48793 View Materials ; 10 PARATYPES, NMV J15795 View Materials ; 10 PARATYPES, AM P58963; 48 km east-north-east of Cape Tourville , Tasmania, Australia, 42°00.25'S 148°43.55'E, 1264 m, gravel with lumps of sandy mud aggregate, epibenthic sled, G.C.B. Poore et al., 30 October 1988 GoogleMaps , RV Franklin, stn SLOPE 81 .

Type locality. 48 km east-north-east of Cape Tourville , Tasmania, Australia, 42°00.25'S 148°43.55'E, 1264 m depth GoogleMaps .

Description. Based on holotype female, 7.2 mm, NMV J48795 View Materials . Head much deeper than long, anterior margin with notch extended into a slit; rostrum present, cone-shaped; eye apparently absent. Antenna 1 peduncular article 1 ballshaped proximally, distal margin with well-developed medial spine; peduncular article 2 long, length 4.5× breadth; flagellum without callynophore, calceoli absent. Antenna 2 flagellum about as long as that of antenna 1, without calceoli. Mouthpart bundle subquadrate. Mandible lacinia mobilis a stemmed distolaterally cusped blade; accessory setal row with intermediate setae; palp article 2 without posterodistal setae, article 3 without A3-seta. Maxilliped outer plate with distal margin smooth, medial margin without notch.

Gnathopod 1 carpus longer than propodus (1.2×); propodus, posterior margin with robust setae. Gnathopod 2 palm acute, without lateral robust setae, with 1 medial robust seta. Pereopods 3 and 4 merus and carpus without setal fringe. Pereopod 4 coxa with anterior margin slightly obtuse, posterior margin straight, anteroventral corner subquadrate. Pereopods 5–7 with distal articles elongate, dactyls long and slender.

Pereopod 5 basis expanded posteriorly, rounded. Pereopod 7 basis subrectangular, posteroventral corner rounded, posteroventral margin straight.

Epimeron 3 posterior margin smooth, with notch immediately above acute posteroventral corner. Uropod 1 peduncle dorsolateral margin with 11 robust setae; outer ramus without large spines between robust setae. Uropod 2 inner ramus moderately constricted. Uropod 3 rami lanceolate; without plumose setae; outer ramus 2-articulate. Telson moderately cleft (about 40%).

Male (sexually dimorphic characters). Based on paratype male, 7.5 mm. Antenna 1 flagellum with callynophore, with calceoli. Mandible palp article 2 with 8 posterodistal setae. Pereopods 3 and 4 merus and carpus with setal fringe. Uropod 3 rami with plumose setae.

Etymology. Named for the whaling ship Dubuc, scuttled off Kangaroo Bluff, Bellrieve, in the Derwent River, Tasmania, in November 1808.

Remarks. The main difference between D. dubuc and D. grahami is the anterior margin of the head, which has a notch extended into a slit in D. dubuc but only a simple notch in D. grahami . In addition, D. dubuc does not have plumose setae on uropod 3 of the female.

Habitat. Devo dubuc is known from only one collection, on a coarse sediment bottom.

Distribution. Southeastern Australia, Tasman Sea; 1264 m depth.