Austroregia huxleyana ( Bate, 1862 )

Alonso, G. M., 2012, Amphipod crustaceans (Corophiidea and Gammaridea) associated with holdfasts of Macrocystis pyrifera from the Beagle Channel (Argentina) and additional records from the Southwestern Atlantic, Journal of Natural History 46 (29 - 30), pp. 1799-1894 : 1839-1840

Austroregia huxleyana ( Bate, 1862)

Atylus huxleyanus Bate, 1862: 135 , pl. 25, fig. 4.

Halirages stebbingi: Alonso, 1980: 10–12 , pl. 7 (not Schellenberg, 1931)

Austroregia huxleyana: J.L. Barnard, 1989: 704–709 , figs. 2–4; De Broyer et al., 2007: 63.

Material examined

Argentina; Beagle Channel, northern Isla Despard, 54 ◦ 52 ′ S, 68 ◦ 10 ′ W, 8–12 m depth, colls. D. Aureliano and A. Ferlito, don. G. Lovrich, 19 March 1999: 1 ♂ 7.5 mm, MACN-In 38555a; 1 ♀ 13 mm, MACN-In 38555b; 2 ♂♂ 14 and 16 mm, MACN-In 38555c; 3 ♀♀ 13–22 mm, 2 sex indet. 11 and 15 mm, MACN-In 38555d; 4 ♂♂ 11 and 20 mm, MACN-In 38555e; 2 ♀♀ 16 and 17 mm, 1 sex indet. 11 mm, MACN-In 38555f; 2 ♂♂ 13 and 14 mm, MACN-In 38555g. Same location, same colls., 24 May 1999: 1 ♂ 13 mm, MACN-In 38556a; 2 ♀♀ 24 and 25 mm, MACN-In 38556b; 1 ♂ 19 mm, MACN-In 38556c; 1 ♂ 14 mm, MACN-In 38556d; 2 ♀♀ 17 and 18 mm, 27 May 1999, MACN-In 38557. Same location, same colls., 5 August 1999: 1 ovig. ♀ 22 mm, 2 ♀♀ 19 mm, MACN-In 38558a; 2 ♂♂ 16 and 17 mm, MACN-In 38558b. Same location, same colls., 11 August 1999: 1 ovig. ♀ 28 mm, 1 sex indet. 16.5 mm (damaged), MACN-In 38559a; 1 ovig. ♀ 27.5 mm, 1 ♀ 21 mm, MACN-In 38559b; 1 ovig. ♀ 31 mm, MACN-In 38559c; 1 ovig. ♀ 30 mm, 2 sex indet. 8 mm, 1 November 1999, MACN-In 38560. Same location, same colls., 10 November 1999: 1 ♂ 7.5 mm, MACN-In 38561a; 1 sex indet. 7 mm, MACN-In 38561b; 2 sex indet. 5 and 9 mm, MACN-In 38561c; 1 sex indet. 7 mm, MACN-In 38561d. Same location, same colls., 10 February 2000: 1 ovig. ♀ 30 mm, 1 ♀ 14 mm, MACN-In 38562a; 3 ovig. ♀♀ 29–31 mm, MACN-In 38562b; 1 ovig. ♀ 33 mm, MACN-In 38562c; 1 ♂ 15 mm, MACN-In 38562d; 1 ovig. ♀ 30 mm, 2 sex indet. 10.5 and 10.7 mm, MACN-In 38562e; 2 ovig. ♀♀ 29 and 30 mm, 2 ♀♀ 19 and 20 mm, 1 sex indet. 11 mm, MACN-In 38562f; 4 ♂♂ 11–18 mm, MACN-In 38562g. Same location, same colls., 14 February 2000: 1 sex indet. 11.2 mm, MACN- In 38563a; 1 ♂ 12 mm, MACN-In 38563b. Same location, same colls., 2 May 2000: 1 ♂ 9.5 mm, MACN-In 38564a; 1 ♂ 14.1 mm, MACN-In 38564b; 3 ♀♀ 16–24 mm, 2 sex indet. 12 and 12.5 mm, MACN-In 38564c; 7 ♂♂ 12–22 mm, MACN-In 38564d; 2 ♀♀ 12.7 and 13 mm, MACN-In 38564e; 1 ♂ 13 mm, MACN-In 38564f. Same location, same colls., 29 May 2000: 1 ♀ 14 mm, MACN-In 38565a; 1 ♂ 14 mm, MACN- In 38565b. Tierra del Fuego ; Estancia Moat, approx. 54 ◦ 56 ′ S, 66 ◦ 47 ′ W: 3 ovig. ♀♀ 12.5–14 mm, 2 sex indet. 9.9 and 10.8 mm, among rocks, 18 January 1975, coll. S. Cabrera de Price, don. L. Orensanz, MACN-In 38566; Bahía Golondrina , approx. 54 ◦ 50 ′ S, 68 ◦ 17 ′ W: 5 ovig. ♀♀ 10.2–11.5 mm, 1 ♀ 9.8 mm, associated to Ulva sp. , intertidal, 12 January 1982, MACN-In 38567; approx. 54 ◦ 48 ′ S, 68 ◦ 19 ′ W: 1 ovig. ♀ 25 mm, 1 ♀ 20 mm, washed algae, subtidal, 17 September 1973, MACN-In 38568; Mouth of Río Olivia , approx. 54 ◦ 45 ′ 23" S, 68 ◦ 11 ′ 52" W: 3 ovig. ♀♀ 10–12.2 mm, associated to Polysiphonia sp. , intertidal, 10 January 1982, MACN-In 38569. Santa Cruz province ; San Julián , 49 ◦ 21 ′ S, 67 ◦ 45 ′ W: 7 ovig. ♀♀ 12–15 mm, associated to Chondria sp. , intertidal, 18 January 1984, MACN-In 38570; 1 ovig. ♀ 14.7 mm, associated to Ulva sp. , intertidal, 18 January 1984, MACN-In 38571; 2 ♀♀ 11 mm, associated to Ulva sp. , intertidal, 19 January 1984, MACN-In 38572. Ría Deseado , approx. 47 ◦ 45 ′ S, 65 ◦ 55 ′ W, Punta Cascajo : 5 ♀♀ 11.5–16 mm, 2 ♂♂ 15 and 16 mm, washed algae, subtidal, 4 May 1973, MACN-In 38573; Baliza Sorrel , 4 sex indet. 5–7.5 mm, 2 ♂♂ 5.5 and 7.1 mm, washed algae, subtidal, 4 May 1973, MACN-In 38574; Dos Hermanas , 1 ♀ 18 mm, associated to Chondria sp. and Codium sp. , intertidal, 26 July 1974, MACN-In 38575. Caleta Olivia , 46 ◦ 26 ′ S, 67 ◦ 32 ′ W: 1 ovig. ♀ 14.2 mm, associated to Chondria sp. , intertidal, 5 January 1984, MACN-In 38576. Chubut province; Muelle Storni, approx. 42 ◦ 46 ′ S, 65 ◦ 02 ′ W: 1 ♀ 11 mm, washed algae, subtidal, 18 October 1996, coll. and don. L . Kuba, MACN-In 38577; Punta Pardelas, 42 ◦ 37 ′ S, 64 ◦ 16 ′ W: 1 ♀ 12 mm, associated to Corallina sp. and Ceramium sp. , intertidal, 23 July 1980, MACN-In 38578; Puerto Lobos, 42 ◦ 02 ′ S, 65 ◦ 00 ′ W: 1 ovig. ♀ 9 mm, 1 ♀ 10 mm, 1 sex indet. 7 mm, associated to Codium sp. , rocky tidal pool, 1972, coll and don. L. Orensanz, MACN-In 38579. Río Negro province , West Golfo San Matías , Isla de los Pájaros, approx. 41 ◦ 26 ′ S, 65 ◦ 00 ′ W: 12 ovig. ♀♀ 12–17 mm, 2 ♀♀ 12 and 13.2 mm, rocky tidal pool, 14 December 1972, coll. and don. L. Orensanz, MACN-In 38580a, 4 ♂♂ 8–11 mm, same data, MACN-In 38580b .

New catalogue numbers

Argentina; Santa Cruz province, Ría Deseado, approx. 47 ◦ 45 ′ S, 65 ◦ 55 ′ W, Punta Cavendish : 3 ♀♀ 11–16 mm, June 1972, MACN-In 38581; 3 ♀♀ 13–15.5 mm, 28 March 1978, MACN-In 38582; Dos Hermanas, 18 September 1978,: 1 ovig. ♀ 20.2 mm, 4 ♀♀ 18–19 mm, MACN-In 38583a; 2 ♂♂ 18 and 18.4 mm, MACN-In 38583b ; Isla larga: 4 ovig. ♀♀ 19–22 mm, 1 ♀ 23 mm, 18 October 1978, MACN-In 38584; Punta Cascajo, 21 February 1979: 4 ovig. ♀♀ 15.5–17.5 mm, 3 ♀♀ 15–16 mm, MACN-In 38585a; 3 ♂♂ 12.25–16 mm, MACN-In 38585b; Península Foca: 2 ♀♀ 12–16 mm, 4 ♂♂ 11–14 mm, 23 May 1979, MACN-In 38586; 3 ovig. ♀♀ 13–16 mm, 1 ♀ 11 mm, 11 February 1980, MACN-In 38587; Dos Hermanas: 4 ♀♀ 10–12 mm, 4 March 1980, MACN-In 38588 .

Remarks

Austroregia huxleyana ( Bate, 1862) basically agrees with the description of J.L. Barnard (1989), except in the mandibular palp; the studied material has two outer basal setae on the third article instead of outer margin naked. This species is widely distributed in southern South America, extending its distributional limits to some localities of Santa Cruz, Chubut and Río Negro provinces, which are mentioned for the first time.