Quadrimaera metinaro Hughes, 2015

Hughes, Lauren E., 2015, Maeridae from the Indo-Pacific: Elasmopus, Leeuwinella gen. nov., Maeropsis, Pseudelasmopus and Quadrimaera (Amphipoda: Crustacea), Zootaxa 4059 (2), pp. 201-256 : 237

Quadrimaera metinaro Hughes, 2015

( Figs 36–38 )

Quadrimaera metinaro Hughes, 2015: 102 , figs 22–24.

Material examined. Male, 4.6 mm, dissected 4 slides, AM P.92526, south end of McCluer Island, Northern Territory, 11°6'S, 133°00'E, 0 m, red algae, 18 October 1982, coll. J.K. Lowry, NT 63; 1 male, 4 mm, dissected, 3 slides, AM P.92527, south end of McCluer Island, Northern Territory, 11°6'S, 133°E, 0 m, red algae, 18 October 1982, coll. J.K. Lowry NT 63; 1 c female, 4.2 mm, dissected, 1 slide, AM P.92528, south end of McCluer Island, Northern Territory, 11°6'S, 133°00'E, 0 m, red algae, 18 October 1982, coll. J.K. Lowry, NT 63; 10 specimens, AM P.78319, south end of McCluer Island, Northern Territory, 11°6'S, 133°E, 0 m, red algae, 18 October 1982, coll. J.K. Lowry, NT 63; 2 specimens, AM P.77903, reef at west end of Oxley Island, 1100'S, 13249'E, 5 m, red sponge on dead hard coral Acropora sp., 20 October 1982, coll. J.K. Lowry, NT 79; 1 juvenile specimen, AM P.78318, reef on north side of New Year Island, 10°54'S, 133°02'E, 2 m, red algae, 13 October 1982, coll. G.C.B. Poore, NT 1.

Type locality. East of Metinaro , Secret Garden Reef, Timor-Leste, 8°29'15"S, 125°49'53"E.

Variation. Adult male of 4.6 mm (AM P.92526) with well developed lobes on the gnathopod 2 basis, which are not present on smaller male and female specimens of 4 mm and 4.2 mm body length (AM P.92527 and AM P.92528).

Remarks. Specimens from the Northern Territory have only three robust setae on each telsonic lobe, for both juveniles and adults, in contrast to the type material from Timor-Leste, which has four robust setae. With only one seta difference the, material is attributed to Q. metinaro . Quadrimaera mirandelle Appadoo& Myers, 2002 from Mauritius has a similar gnathopod 2 propodus palm to Q. metinaro , and the telson has 5 robust setae. With Q. metinaro from Northern Territory presenting an intermediate telson setal number the possibility that these latter species is a junior synonym was considered, but the gnathopod 2 dactylus is more medially broad in Q. mirandelle .

Distribution. Timor-Leste (Hughes 2015). Australia: Northern Territory: McCluer Island, Oxley Island, New Year Island (current study).

Figures

FIGURE 36. Quadrimaera metinaro Hughes, 2015 male 4.6 mm, habitus, AM P. 92526, south end of McCluer Island, Northern Territory.

FIGURE 37. Quadrimaera metinaro Hughes, 2015, a male 4.6 mm, AM P. 92527; b male 4 mm, AM P. 92527; c female 4.2 mm, AM P. 92528, south end of McCluer Island, Northern Territory, scales 0.1 mm.

FIGURE 38. Quadrimaera metinaro Hughes, 2015 male 4.6 mm, AM P. 92526, south end of McCluer Island, Northern Territory.