Hughes: southern Australian podocerid amphipods 
73 
Systematic section 
Corophiidea Leach, 1814 
Caprelloidea Leach, 1814 
Podoceridae Leach, 1814 
Podocerinae Leach, 1814 
Cyrtophium Dana, 1852 
Cyrtophium Dana, 1852:309.—Dana, 1853: 839.—Stebbing, 
1906: 697-698.—J. L. Barnard, 1969: 427.—Laubitz, 
1984: 79.—Barnard & Karaman, 1991: 656. 
Diagnosis. Amended after Laubitz, 1984: Pereon depressed, 
with 7 segments; urosome of 3 segments. Antennae 1 
accessory flagellum vestigial, scale-like or absent; epistome 
produced; maxilla 1 inner plate absent, outer plate with 9 
spines; maxilla 2 without facial setae; maxilliped palp 4 
blunt; gnathopod 2 of female nearly as large as that of male; 
brood plates on pereopods 2-4; uropod 2 biramus, uropod 
3 without rami. 
Remarks. Assessment of C. minutum has verified the 
presence of a small scale like accessory flagellum. The 
generic concept for Cyrtophium is therefore expanded to 
include antenna 1 accessory flagellum vestigial, scale-like 
or absent. The two remaining species in the genus, C. laeve 
(Heller, 1867) and C. orientale (Dana, 1853) are poorly 
known (Barnard & Karaman, 1991). Further information 
on these species is required for the genus to be formally 
reassessed against other genera in the Podoceridae. 
Cyrtophium minutum Haswell, 1879 
Figs 2-4 
Cyrtophium minutum Haswell, 1879: 343, pi. 22 fig. 6f, g.— 
Haswell, 1885:109, pi. 18, figs 1-5,9.—Stebbing, 1906: 
698.—Stebbing, 1910: 650.—Springthorpe & Lowry, 
1994:25.—Lowry & Stoddart, 2003: 245 (catalogue). 
Type material. Possible syntypes, 13 specimens, AM 
P.3425, Port Jackson, New South Wales (33°51’S 151°16’E). 
Type locality. Port Jackson, Sydney, New South Wales, 
Australia. 
Material examined. New South Wales. 1 SEM pin mounted specimen, 
3.5 mm, AM P.78208, 150 m east of Burrill Rocks, Ulladulla (35°23'24"S 
150°28'10''E), 19 m, on surface of sponges, 1 May 1997, coll. P. B. 
Berents, K. B. Attwood and A. Murray (NSW 1278); 1 SEM pin mounted 
specimen, AM P.78209,150 m east of Burrill Rocks, Ulladulla (35°23’24"S 
150°28'10"E), 19 m, on surface of sponges, 1 May 1997, coll. P. B. Berents, 
K. B. Attwood and A. Murray (NSW 1278); 1 male, 3.0 mm, dissected, 2 
slides, AM P.86148, 150 m east of Burrill Rocks, Ulladulla (35°23’24"S 
150°28'10"E), 16 m, bryozoans Scuticellaplagiostoma and Orthoscuticella 
sp., 1 May 1997, coll. P. B. Berents (NSW 1284); 1 female specimen, 3.6 
mm, dissected, 2 slides, AM P.86216,150 m east of Burrill Rocks, Ulladulla 
(35°23’24"S 150°28’10"E), 19 m, on surface of sponges, 1 May 1997, coll. 
P. B. Berents, K. B. Attwood and A. Murray (NSW 1278); 9 specimens, AM 
P.77153,150 m east of Burrill Rocks, Ulladulla (35°23'24"S 150°28’10''E), 
16 m, bryozoans Scuticella plagiostoma and Orthoscuticella sp., 1 May 
1997, coll. P. B. Berents (NSW 1284); many specimens, AM P.77144,150 m 
east of Burrill Rocks, Ulladulla (35°23'24"S 150°28'10"E), 19 m, on surface 
of sponges, 1 May 1997, coll. P. B. Berents, K. B. Attwood and A. Murray 
(NSW 1278); many specimens, AM P.77147, 150 m east of Burrill Rocks, 
Ulladulla (35°23'24"S 150°28'10"E), 17 m, bryozoan Margaretta barbata 
on wall, 1 May 1997, coll. P. B. Berents (NSW 1280); many specimens, AM 
P.77149,150 m east of Burrill Rocks, Ulladulla (35°23'24''S 150°28'10"E), 
18 m, hydrozoan and bryozoan, 1 May 1997, coll. P. B. Berents (NSW 
1281); many specimens, AM P.77156,150m east of Burrill Rocks, Ulladulla 
(35°23'24"S 150°28'10''E), 18 m, sponge and gorgonacean, 1 May 1997, 
coll. K. B. Attwood (NSW 1286); 1 specimen, AM P.77162, Golf Course 
Bommie, 500 m northeast of Ulladulla Head (35°20’28"S 150°29’12"E), 
10 m, algal turf, 2 May 1997, coll. P. B. Berents and K. B. Attwood (NSW 
1293); 1 specimen, AM P.77163, Golf Course Bommie, 500 m northeast of 
Ulladulla Head (35°20'28"S 150°29’12"E), 14 m, clump of dead Filograna 
sp. polychaete tubes on vertical face of large boulder, 2 May 1997, coll. P. 
B. Berents (NSW 1299); 1 specimen, AM P.77168, Halfway Reef, 200 m 
south of Sullivan Reef, Ulladulla (35°21'25"S 150°29'18"E), 15 m, airlift 
over wall of sponges, Bryozoa, Hydrozoa, 3 May 1997, coll. P. B. Berents, 
K. B. Attwood and A. Murray (NSW 1307); 1 specimen, AM P.77175, 
50 m east of Sullivan’s Reef, Ulladulla (35°2E19"S 150°29’22''E), 24 m, 
gorgonacean, 5 May 1997, coll. P. B. Berents (NSW 1326); 1 specimen, 
AM P.77179, northern side of Bannister Head, north of Batemans Bay 
(35°19'9''S 150°29'7"E), 18 m, 6 May 1997, coll. K. B. Attwood (NSW 
1344); 4 specimens, AM P.77183, Burrill Rocks, Ulladulla (35°23’23"S 
150°28’14"E), 21 m, low tufting brown and coralline algae, 7 May 1997, 
coll. A. Murray (NSW 1351); 3 specimens, AM P.77187, Burrill Rocks, 
Ulladulla (35°23'23"S 150°28’14"E), 22 m, red alga, 7 May 1997, coll. A. 
Murray (NSW 1356); 1 specimen, AM P.86146, sewerage pipeline, Nelson 
Bay, Port Stephens (32.71968 152.14122), 10 m, branched green sponge, 
ascidians, pennatulacean, 15 March 2006, coll. K. B. Attwood (NSW 3041); 
1 specimen, AM P.86147, sewerage pipeline, Nelson Bay, Port Stephens 
(32°43'10"S 152°8’28"E), 10 m, mass of intertwined dead algae, 15 March 
2006, coll. K. B. Attwood (NSW 3042).— Victoria. Many specimens, AM 
P.86154, Gabo Island (37°33'S 149°54'E), 30 m, rocky bottom kelp bed, 4 
June 1981, coll. V. Harriet and L.Vail (G2). 
Diagnosis. Coxa 1-7 contiguous. Gnathopod 1 propodus 
subrectangular, without robust seta at corner of palm. 
Gnathopod 2 basis as long as broad; palm with one distal 
subtriangular tooth, palm defining corner with tooth and 
without robust setae. 
Female Gnathopod 1 propodus rectolinear, palm margin 
smooth, without palm defining margin or robust setae. 
Gnathopod 2 propodus spherical, palm defined by corner 
with 3 robust setae. 
Description. Based on male, 3.0 mm, AM P.86148. Body 
cuticle dorsally smooth. Head dorsally smooth; eyes greatly 
bulging; lateral cephalic lobe subquadrate. Antennae 1 
0.6 times body length; subequal to antennae 2; primary 
flagellum 0.5 times peduncle length, with 3 articles; 
accessory flagellum, minute, scale-like, 1-articulate. 
Antennae 2 peduncle article 4 subequal in length to article 
5; flagellum 0.4 t im es peduncle length, posterior margin 
with robust setae (based on female AM P.86216). Mandible 
accessory setal row with 3 setae. Maxilla 1 palp distal 
margin with 4 robust setae. 
Coxa 1-7 contiguous. Gnathopod 1 coxa smaller than 
coxa 2, broader than long, distoventral corner not produced; 
basis 3 times as long as broad, without anterodistal setae; 
carpus rectolinear, 1.8 times as long as broad; propodus 
subrectangular, 2.1 times as long as broad, anterior margin 
with sparse long slender setae, palm margin smooth, without 
robust seta at corner of palm; dactylus posterior margin 
with 3 serrate teeth, cuticle surface smooth, closing along 
palm. Gnathopod 2 basis as long as broad, anterodistal 
corner subquadrate, without setae; merus posterior margin 
with broad produced lobe, twice as broad as long, apically 
rounded, without short robust setae; propodus subovate, 1.8 
times as long as broad, anterior margin with clusters of short 
slender setae, palm 2 A length of propodus, with broad, well 
developed distal shelf, shelf margin crenulated, palm with 
