The Marine Fauna of New Zealand: Isopoda, Aegidae (Crustacea)

Aegiochus coroo (Bruce, 983), comb. nov.
(Figs 49–5 )
Aega (Rhamphion) coroo Bruce, 1983: 770, figs 9, 10.
Aega coroo. Springthorpe & Lowry, 994: 43. – Bruce, Lew
Ton & Poore, 2003: 6 .
materiaL examined: New Zealand. ♂ ( 2.0 mm), ♀
(ovig. 2.5 mm), northwest of Taranaki, 38°37.99’S,
72°40.99’E, 28 March 968, E908, 256 m (NIWA 24006).
New caledonia and Norfolk ridge. 4 ♂ (8.5, 0.3, .7
[drawn dissected], 3.0 mm), 4 ♀ (ovig. 2.5, non-ovig.
4.2, 4. , 0.4 mm), Banc Eponge, Norfolk Ridge,
24°56’S, 68°22’E, 23 June 200 , 533–545 m, NORFOLK
, DW 688, coll. Lazouet, Boisselier, Richer de Forges,
N.O. Alis (MNHN Is.5925). ♀ (non-ovig. 4.5 mm),
Coral Sea, 20°06.084–0.6. 85’S, 60°23.544–22.835’E, 20
October 2005, 490–550 m, DW26 9, (MNHN Is.59 9).
♂ (9.0 mm), Norfolk Ridge, 24°06.960–0.6. 2’S,
59°4 .270–4 .500’E, 8 October 2005, 350–400 m,
DW2520, coll. (MNHN Is.59 8). ♂ ( 2.8 mm), Norfolk
Ridge, 22°53’S, 67° 2’E, 28 June 200 , 403–429 m,
NORFOLK , DW 734, coll. Lazouet, Bouchet, Richer
de Forges, N.O. Alis (MNHN Is.5927). ♂ ( .5 mm), ♀
(ovig. 3.5 mm), Banc Eponge, Norfolk Ridge, 24°55’S,
68°22’E, 23 June 200 , 508–54 m, NORFOLK ,
DW 684, coll. Lazouet, Bouchet, Richer de Forges, N.O.
Alis (MNHN Is.5926 [small tube with female]). ♂ ( .0
mm), Banc Branchiopode, Norfolk Ridge, 234°28’S,
67°5 ’E, 2 October 2003, 37 m, NORFOLK 2, stn 2024
(MNHN Is. 59 5). ♂ ( .5 mm), 24°56’S, 68°2 ’E, 2
May 987, 505 m, SMIB 3, DW6, coll. Richer de Forges,
N.O. Vauban (MNHN Is. 5944). solomon Islands. ♂
(~ 3 mm), 09°46.4’S, 60°52.3’E, 7 October 200 , 254–
28 m, SALOMON , DW 856, coll. N.O. Alis (MNHN
Is.5920). Indonesia. ♂ ( 2.5 mm), (non-ovig. 2.2 mm),
Tanimbar Islands, 07°59’S, 33°02’E, 20 October 99 ,
84– 86 m, KARUBAR, DW50, coll. N.O. Baruna Jaya
(MNHN Is.5922). ♂ ( .5 mm), Kai Islands, 057° 8’S,
32°38’E, 24 October 99 , 246 m, KARUBAR, DW 4,
coll. N.O. Baruna Jaya (MNHN Is. 592 ).
Additional material. Southwest of New Caledonia,
vicinity of Norfolk ridge. 5, 24°55’S, 68°22’E, 505–
5 5 m, BIOCAL, DW66 (MNHN Is.5937). , 22° 5’S,
67° 5’E, 440 m, BIOCAL, DW77 (MNHN Is.5936).
3, 20°35’S, 66°54’E, 460 m, BIOCAL, DW83 (MNHN
Is.5938). , 22°49.32’S, 66°44.68’E, 300–370 m, BATHUS
2, DW73 (MNHN Is.5952). , 24°54’S, 68°2 ’E, 540–
570 m, BERyx , CP08 (MNHN Is.595 ). , 24°52’S,
68°22’E, 635–680 m, BERyx , DW09 (MNHN
Is.5949). 4, 24°53’S, 68°2 ’E, 565–600 m, BERyx ,
DW 0 (MNHN Is.5950). , 24°44.6’S, 68°09.3’E, 230
m, CHALCAL II, CP20 (MNHN Is.59 7). , 24°54.00’S,
68°2 .0 ’E, 500 m, CHALCAL II, CP2 (MNHN
Is.59 6). 20, 24°54.5’S, 68°22.3’E, 527 m. CHALCAL
II, DW72 (NIWA 24005). , 9°04.0’S, 63°27.5’E,
93
260 m, MUSORSTOM IV, 0 84 (MNHN Is.5932). ,
22°5 .3’S, 67° 2.0’E, 405–430 m, MUSORSTOM IV,
02 3 (MNHN Is.5933). , 22°52.5’S, 67° .8’E, 390–420
m, MUSORSTOM IV, 0230 (MNHN Is.5934). 5, 24°56’S,
68°22’E, 520 m, SMIB 3, DW (MNHN Is.5943). ,
24°53’S, 68°22’E, 530–537 m, SMIB 3, DW2 (MNHN
Is.5945). 2, 24°55’S, 68°22’E, 5 3 m, SMIB 3, DW3
(MNHN Is.5946). , 24°55’S, 68°22’E, 502–5 2 m, SMIB
3, DW5 (MNHN Is.594 ). , 24°55.2’S, 68°2 .7’E, 5 –
522 m, SMIB 8, DW 46 (MNHN Is.5947). 2, 24°55. ’S,
68°2 .6’E, 5 0 m, SMIB 8, DW 48 (MNHN Is.5948).
further lots from the region, not listed individually,
MNHN, not registered). Eastern Australia. , northern
Queensland, 7°53’S, 46°53’E, 96 m (QM W 8823). ,
southern Queensland, 28° 7.47’S, 58°37.89’E, 4 9 m
(AM P74739). 5, East of Nobby’s Head, NSW, 32°53’S,
52°35’E, 75 m, (AM P37503). , east of Long Reef,
NSW, K85- 2-08, 9 December 985, 74 m, (AM
P43977). , east of Long Reef Point, NSW, 33°46’S,
5 °43’E, 75 m, (AM P375 0). 7, East of Long Reef
Point, NSW, 33°43–44’S, 5 °46’E, 74 m, (AM P37506).
, southeast of Moruya Point, NSW, 35°58’–36°03’S,
50°30–27’E, 384 m, (AM P37522). 3, off Merimbula,
NSW, 36°52.5’S, 50° 8. ’E, 52 m (AM P45309). ,
east of Bermagui coast, NSW, 37°26.5’S, 50° 7.0’E,
coll. CSIRO (AM P375 3). 4, ‘7-5 50 (AM P375 9). ,
off Bermagui, SS 05/94/ 56, 5 September 994, 46
m (AM P43969). 4, east of Bermagui, NSW, 37°25.2’S,
50° 8.5’E, 220 m (AM P453 0). , transect east of Bermagui,
NSW, 36°22.6’S, 50° 4.9’E, 8 September 994,
277 m (AM P44 50).
type LoCaLity: Off Sydney, New South Wales, 33°59’S,
5 °35’E.
desCription: Body 2.8 times as long as greatest width,
dorsal surfaces polished in appearance, widest at
pereonite 5, lateral margins subparallel. Rostral point
ventrally directed. Eyes large, medially united, anterior
clear field 23% length of head, posterior clear field 45%
length of head; each eye made up of ~ 2 transverse
rows of ommatidia, each row with ~8 ommatidia; eye
colour dark brown, or pale brown. Pereonite 1 and coxae
2–3 each with posteroventral angle right-angled. Coxae
5–7 with entire oblique carina; posterior margins concave,
posterolateral angle acute (less than 45°). Pleon
with pleonite visible in dorsal view; pleonite 4 with
posterolateral margins extending to but not beyond
posterior margin of pleonite 5; pleonite 5 with posterolateral
angles free, not overlapped by lateral margins of
pleonite 4. Pleotelson 0.8 times as long as anterior width,
dorsal surface without longitudinal carina; lateral margins
convex, serrate, posterior margin converging to
caudomedial point, with 0 RS.
Antennule peduncle extending to posterior of pereonite
. Antenna flagellum extending to pereonite 4.