Cymadusa munnu Poore & Lowry, 1997

Peart, Rachael A., 2007, A review of Australian Cymadusa (Crustacea: Amphipoda: Ampithoidae) with descriptions of eight new species, Zootaxa 1540, pp. 1-53 : 26-27

Cymadusa munnu Poore & Lowry, 1997

( Figs. 19–20 )

Cymadusa munnu Poore & Lowry, 1997: 918 –922, figs 14–17.

Type material. Holotype: female, 16.5 mm, AM P45081, Shark Bay, Port Jackson, New South Wales, Australia, 33°51.2’S 151°15.9’E, 2 February 1995, 1– 2 m, on Dictyopteris acrostichoides, A.G.B. Poore.

Paratypes: male, 23.9 mm, AM P45082, Shelly Beach, Cronulla, New South Wales, Australia, 34°04’S 151°09’E, 3 August 1994, 1– 2 m, on Homoeostrichus sinclairi, A.G.B. Poore ; females, AM P45083, 3 specimens, Shelly Beach, Cronulla, New South Wales, Australia, 34°04’S 151°09’E, 3 August 1994, 1– 2 m, on Zonaria diesingiana, A.G.B. Poore ; female, AM P45084, 1 specimen, Shark Bay, Port Jackson, New South Wales, Australia, 33°51.2’S 151°15.9’E, 2 February 1995, 1– 2 m, on Dictyopteris acrostichoides, A.G.B. Poore ; male, AM P45085, 1 specimen, Shark Bay, Port Jackson, New South Wales, Australia, 33°51.2’S 151°15.9’E, 11 March 1995, 0–0.5 m, on Champia sp., E. Taylor-Wood.

Other material examined. AM P59661, 1 specimen; AM P59662, 3 specimens; AM P59663, 1 specimen; AM P59667, 1 specimen, on Sargassum sp.; AM P59664, 2 specimens; AM P59665, 1 specimen; AM P59666, 3 specimens, on Dictyota sp.; AM P59659, 2 specimens; AM P59660, 1 specimen, on Padina sp., off Harbord Baths, Sydney, 33°46.99’S 151°17.61’E, New South Wales, Australia, 8 December 1999, 5 m, R. Peart & K. Dempsey.

Diagnosis. Antenna 1 accessory flagellum with 1 article. Maxilla 1 inner plate with 3 slender setae. Gnathopod 1 without densely setose margins; merus produced to form a small, acute distoventral lobe; carpus subequal to propodus; palm acute, entire, without midmedial tooth, without posterodistal tooth defining palm, with 1 defining robust seta. Gnathopod 2 with long setae on margins, not plumose; merus produced to form a short, subacute distoventral lobe; carpus much shorter than propodus; palm acute, entire, with a subacute midmedial tooth, without posterodistal tooth defining palm, with 1 defining robust seta; dactylus subequal in length to palm, tapering evenly, acute. Epimeron 3 posteroventral corner broadly rounded. Uropod 3 peduncle with seven distal robust setae; outer ramus with patch of small conical lateral denticles, with lateral setal fringe. Telson distally truncate, apical cusps small, with lateral and oblique medial rows of slender setae.

Habitat. Cymadusa munnu occurs on the brown algae Dictyopteris acrostichoides , Homoeostrichus sinclarii , Zonaria diesingiana, Delisea pulchra and Champia sp., 0–m depth ( Poore & Lowry1997).

Distribution. Sydney, New South Wales, Australia.

Figures

FIGURE 19. Cymadusa munnu Poore and Lowry, 1997. Holotype, female, 16.5 mm, AM P 45081, Shark Bay, Port Jackson, New South Wales, Australia.

FIGURE 20. Cymadusa munnu Poore and Lowry, 1997. Holotype, female, 16.5 mm, AM P 45081. Paratype male, 23.9 mm, AM P 45082, Shark Bay, Port Jackson, New South Wales, Australia. Scales for A 1, A 2, G 1 and G 2 0.5 mm. Scales for mouthparts, U 3 and T 0.2 mm.