Devo grahami, 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 : 204-209

Devo grahami n.sp.

Figs. 73–75, Plate 1c

Type material. HOLOTYPE, female, 7.7 mm, ovigerous (8 eggs), AM P36872; 1 PARATYPE, male, 9.3 mm, AM P36873 ; 5 PARATYPES, AM P36874 ; E of Broken Bay , New South Wales, Australia, 33°31'S 152°08'E to 33°33'S 152°07'E, 914 m, dredge , R. T. Springthorpe, 10 December 1980, FRV Kapala , stn K80-20-8. 5 PARATYPES, AM P56969, E of Broken Bay , NSW, Australia, 33°29'S 152°12'E to 33°27'S 152°14'E, 1143– 1200 m, beam trawl , R. T. Springthorpe , 12 February 1986, FRV Kapala , stn K86-01-09. 5 PARATYPES (4 males, 1 female), AM P36875, E of Broken Bay , NSW, Australia, 33°30'S 152°12'E to 33°33'S 152°09'E, 1036–1049 m, R. T. Springthorpe , 12 February 1986, Kapala , stn K86-01-10. 1 PARATYPE, female, AM P36876, SE of Broken Bay , NSW, Australia, 33°41'S 152°01'E, 1125 m, epibenthic sled, 11 December 1978, FRV Kapala , stn K78-27-03. 1 PARATYPE, immature male, 7.0 mm, AM P36877, E of Port Jackson , NSW, Australia, 33°48'S 151°52'E, 549 m, sled/dredge, 3 December 1979, FRV Kapala , stn K79-20-02. 2 PARATYPES (1 mature male, 1 immature male), NMV J48792 ; 54 km ESE of Nowra , NSW, Australia, 34°52.72'S 151°15.04'E, 996 m, mud, fine sand, fine shell, epibenthic sled, G.C.B. Poore et al., 22 October 1988 , RV Franklin , stn SLOPE 53 .

Additional material. Two specimens, AM P56970 , E of Cape York, Australia, Coral Sea , 10°32.72'S 144°12.8'E, epibenthic sled, 780–795 m, P. Hutchings et al., 20 August 1988, RV Franklin , stn 06/88-03. 1 specimen + fragment, NMV J48791 , S of Point Hicks , Victoria, 38°21.90'S 149°20.00'E, 1000 m, epibenthic sled, G.C.B. Poore et al., 23 July 1986, RV Franklin , stn SLOPE 32 . 1 specimen, NMV J48790 , S of Point Hicks , Victoria, 38°19.10'S 149°14.30'E, 600 m, coarse sand, epibenthic sled, M.F. Gomon et al., 24 July 1986, RV Franklin , stn SLOPE 39 . 19 specimens, NMV J48789 , 76 km S of Point Hicks , Victoria, 38°29.33'S 149°19.98'E, 1840 m, sandy mud, fine shell, epibenthic sled, G.C.B. Poore et al., 26 October 1988, RV Franklin , stn SLOPE 69 . 4 specimens, NMV J48788 , off Freycinet Peninsula , Tasmania, 42°2.20'S 148°38.70'E, 800 m, coarse shelly sand, epibenthic sled, M.F. Gomon et al., 27 July 1986, RV Franklin , stn SLOPE 45 . 5 specimens, NMV J48787 , off Freycinet Peninsula , Tasmania, 42°0.20'S 148°37.70'E, 720 m, coarse shelly sand, epibenthic sled, M.F. Gomon et al., 27 July 1986, RV Franklin , stn SLOPE 46 .

Type locality. East of Broken Bay , NSW, Australia, Tasman Sea, 33°31'S 152°08'E to 33°33'S 152°07'E, 914 m depth.

Description. Based on holotype female, 7.7 mm, AM P36872. Head much deeper than long, anterior margin with notch; rostrum present, cone-shaped; eye present, elongate,

paratype immature male, 7.4 mm, NMV J48793 ; off Cape Tourville, Tasmania. Scales for A1, A2 represent 0.2

mm; remainder represent 0.1 mm.

oval. Antenna 1 peduncular article 1 ball-shaped proximally, distal margin with well-developed medial spine; peduncular article 2 long, length 5× breadth; flagellum without callynophore, calceoli absent. Antenna 2 flagellum about as long as that of antenna 1, without calceoli. Mouthpart bundle subquadrate. Epistome/upper lip almost straight (lateral view). 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 (1.3×); propodus, posterior margin with robust setae. Gnathopod 2 palm acute, without lateral robust setae, 1 medial robust seta. Pereopods 3 and 4 merus and carpus without setal fringe. Pereopod 4 coxa with anterior margin slightly paratype immature male, 7.4 mm, NMV J48793 ; off Cape Tourville, Tasmania. Scales represent 0.2 mm. 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 curved .

Epimeron 3 posterior margin smooth, with notch immediately above acute posteroventral corner. Uropod 1 peduncle dorsolateral margin with 12 robust setae; outer ramus without large spines between robust setae. Uropod 2 inner ramus moderately constricted. Uropod 3 rami lanceolate; with a few plumose setae; outer ramus 2- articulate. Telson slightly cleft (about 30%).

Male (sexually dimorphic characters). Based on paratype male, 9.3 mm, AM P36873. Antenna 1 flagellum with callynophore, with calceoli. Mandible palp article 2 with 11 posterodistal setae. Pereopods 3 and 4 merus and carpus with setal fringe. Uropod 3 rami with plumose setae .

Etymology. Named for Ken Graham, fisheries biologist on the FRV Kapala , who helped immensely over the years in collecting amphipods and other invertebrates during the cruises of the Kapala .

Remarks. Devo grahami is very similar to D. dubuc but is distinguished by the notch on the anterior margin of the head not extended into a slit, and by plumose setae present on uropod 3 of the female.

Habitat. Devo grahami has been collected on fine and coarse sediment bottoms.

Distribution. Southeastern Australia, Tasman Sea; 549– 1840 m depth.