Jassa alonsoae Conlan, 1990

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 : 1816-1817

Jassa alonsoae Conlan, 1990

Jassa alonsoae Conlan, 1990: 2045–2049 , figs. 2, 4, 6, 9, 13.

Jassa falcata: Alonso, 1980: 8–9 , pl. 5 (not Montagu, 1808).

Jassa alonsoae: Chiesa et. al., 2005: 169, 170, tb. 2; De Broyer et al., 2007: 261–262.

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: 1 ovig. ♀ 5 mm, 1 November 1999, MACN-In 38499. Tierra del Fuego province; off Bahía San Sebastián, sta 1, 53 ◦ 22 ′ S, 68 ◦ 00 ′ W: 1 ♂ 4.8 mm, dredge sampler, 8.25 m depth, 12–13 November 2002, coll. M. C. Sueiro, MACN-In 38500. Santa Cruz province; San Julián, 49 ◦ 21 ′ S, 67 ◦ 45 ′ W: 1 ♀ 4.8 mm, 1 ♂ 4.9 mm, associated to Chondria sp. , intertidal, 18 January 1984, MACN-In 38501. Ría Deseado, approx. 47 ◦ 45 ′ S, 65 ◦ 55 ′ W: Punta Cavendish, 4 ♂♂ 5.2–6 mm, associated to Schizoseris sp. , subtidal, June 1972, MACN-In 38502; between isla Quinta and isla Larga, 1 ♀ 4.6 mm, pebble bottom, subtidal, 13 February 1980, coll. E. Romanello, MACN-In 38503. Caleta Olivia, 46 ◦ 26 ′ S, 67 ◦ 32 ′ W: 2 ♀♀ 4.2 and 5.5 mm, 3 ♂♂ 5–6 mm, associated to Ulva sp. , intertidal, 5 January 1984, MACN-In 38504; 4 ♀♀ 3.6–5 mm, associated to Chondria sp. , intertidal, 5 January 1984, MACN-In 38505 .

New catalogue numbers

Argentina; Santa Cruz province, Ría Deseado , approx. 47 ◦ 45 ′ S, 65 ◦ 55 ′ W, Punta Cavendish: 4 ovig. ♀♀ 5.2–6.2 mm, 5 ♂♂ 6.1–6.9 mm, June 1972, MACN-In 38506; Península Foca, 1977: 6 ovig. ♀♀ 4.2–5.3 mm, MACN-In 38507a; 6 ♂♂ 4.25–5.5 mm, MACN-In 38507b; Punta Cavendish: 4 ovig. ♀♀ 4.2–5.2 mm, 10 March 1978, MACN- In 38508; Dos Hermanas: 2 ovig. ♀♀ 5 and 5.7 mm (damaged), 21 August 1978, MACN-In 38509; Península Foca: 4 ovig. ♀♀ 3.9–5 mm, 1 ♂ 4.8 mm, 22 March 1979, MACN-In 38510; 3 ovig. ♀♀ 4–5 mm, 11 February 1980, MACN-In 38511; Punta Cascajo: 2 ovig. ♀♀ 4 and 4.4 mm, 1 ♂ 3.6 mm, 14 March 1980, MACN-In 38512 .

Remarks

Jassa alonsoae Conlan, 1990 is distributed in West Antarctica, sub-Antarctic islands and southern South America. The present records in Santa Cruz enlarge its original geographical distribution to other coastal localities of this province.