Lembos argentinensis Alonso de Pina, 1992

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 : 1813-1814

Lembos argentinensis Alonso de Pina, 1992

Lembos argentinensis Alonso de Pina, 1992: 41–48 : figs. 17–41.

Lembos argentinensis: Chiesa et al., 2005: 170 , tb. 2, 172, tb. 3; De Broyer et al., 2007: 238.

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 ♂ 4.95 mm, (damaged), MACN-In 38445a; 2 ovig. ♀♀ 10.2 and 11.15 mm, 2 ♀♀ 6.1 and 6.2 mm, 1 ♂ 6.8 mm, MACN-In 38445b; 1 ovig. ♀ 13 mm, 1 ♂ 10 mm, MACN-In 38445c; 2 ovig. ♀♀ 9 and 10.1 mm, 1 ♂ 9 mm, MACN-In 38445d. Same location, same colls., 24 May 1999: 2 ♀♀ 7 and 9 mm, MACN-In 38446a; 1 ovig. ♀ 9 mm, 3 ♀♀ 8.7–9.5 mm, 4 ♂♂ 8.6–9.2 mm, MACN-In 38446b; 2 ♀♀ 8 and 8.5 mm, 1 ♂ 6.6 mm, MACN-In 38446c; 3 ♀♀ 7.5–9.7 mm, 2 ♂♂ 7 and 7.6 mm, MACN-In 38446d; 1 ♀ 5.05 mm, 1 ♂ 8 mm, MACN-In 38446e. Same location, same colls., 27 May 1999: 1 ovig. ♀ 10 mm, 2 ♀♀ 8 and 10.8 mm, 2 ♂♂ 7.5 and 9.6 mm, MACN-In 38447a; 4 ovig. ♀♀ 8–9.4 mm, 6 ♂♂ 7–9 mm, MACN-In 38447b; 2 ♀♀ 7.8 and 9.4 mm, 1 ♂ 8.15 mm, MACN-In 38447c, Same location, same colls., 5 August 1999: 1 ♀ 7.6 mm, 2 ♂♂ 7 and 8.1 mm, MACN-In 38448a; 1 ♀ 6.8 mm, 1 ♂ 7 mm, MACN-In 38448b; 1 ovig. ♀ 10 mm, 3 ♀♀ 7–9 mm, 8 ♂♂ 8–10 mm, MACN-In 38448c. Same location, same colls., 11 August 1999: 1 ♀ 8 mm, 1 ♂ 6.8 mm, MACN-In 38449a; 15 ovig. ♀♀ 7.5–10 mm, 14 ♂♂ 5.9–10 mm, MACN-In 38449b; 3 ♀♀ 7–8.6 mm, 3 ♂♂ 7–8 mm, MACN-In 38449c; 7 ovig. ♀♀ 8–9.7 mm, 6 ♂♂ 8–10 mm, MACN-In 38449d; 4 ♀♀ 7.6–11 mm, 4 ♂♂ 8–9.95 mm, MACN-In 38449e; 11 ovig. ♀♀ 8.2–12.8 mm, 4 ♀♀ 9.7–10.7 mm, 9 ♂♂ 8–10 mm, MACN-In 38449f. Same location, same colls., 1 November 1999: 2 ovig. ♀♀ 10 and 12.3 mm, 2 ♂♂ 9 mm, MACN-In 38450a; 7 ovig. ♀♀ 7.6–11 mm, 2 ♀♀ 9.1 and 9.8 mm, 7 ♂♂ 8.15–10.25 mm, MACN-In 38450b; 3 ovig. ♀♀ 10–10.6 mm, 1 ♀ 11 mm, 4 ♂♂ 8–10.5 mm, MACN-In 38450c; 4 ovig. ♀♀ 8.9–12 mm, 3 ♂♂ 7.8–10 mm, MACN- In 38450d. Same location, same colls., 10 November 1999: 6 ovig. ♀♀ 8.7–12 mm, 2 ♂♂ 8.4 and 10 mm, MACN-In 38451a; 1 ovig. ♀ 9 mm, MACN-In 38451b; 3 ovig. ♀♀ 11–12.2 mm, 1 ♂ 10 mm, MACN-In 38451c; 2 ovig. ♀♀ 11 mm, 1 ♂ 7.5 mm, MACN- In 38451d. Same location, same colls., 10 February 2000: 2 ovig. ♀♀ 11 and 11.8 mm, 3 ♀♀ 10–10.5 mm, 3 ♂♂ 8–10.2 mm, MACN-In 38452a; 5 ♀♀ 10–12.5 mm, 2 ♂♂ 8 and 8.9 mm, MACN-In 38452b; 1 ♂ 6.8 mm, MACN-In 38452c; 2 ovig. ♀♀ 11 and 12 mm, 1 ♀ 10.4 mm, 4 ♂♂ 7.3–10 mm, MACN-In 38452d; 5 ovig ♀♀ 9–12 mm, 2 ♂♂ 8.7 and 9.1 mm, MACN-In 38452e; 1 ovig. ♀ 11 mm, 9 ♂♂ 5–9 mm, MACN-In 38452f. Same location, same colls., 14 February 2000: 1 ovig. ♀ – 9 mm, 5 ♀♀ 8.6–10 mm, 5 ♂♂ 7.7–9 mm, MACN-In 38453a; 10 ovig. ♀♀ 8–12 mm, 3 ♀♀ 7.7–11.3 mm, 5 ♂♂ 8.6–10 mm, MACN-In 38453b; 1 ♀ 8.6 mm, 1 ♂ 9 mm, MACN-In 38453c. Same location, same colls., 2 May 2000: 2 ovig. ♀♀ 9 and 9.5 mm, 1 ♀ 9.3 mm, 10 ♂♂ 5–9 mm, MACN-In 38454a; 8 ovig. ♀♀ 8.25–9.8 mm, 8 ♂♂ 8–9.7 mm, MACN-In 38454b; 1 ovig. ♀ 10 mm, 1 ♀ 5.9 mm, 7 ♂♂ 6.2–8.2 mm, MACN-In 38454c; 2 ♀♀ 8 and 9 mm, 4 ♂♂ 7–8.7 mm, MACN-In 38454d. Same location, same colls., 29 May 2000: 2 ♀♀ 7 and 8.8 mm, 4 ♂♂ 6.7–8.8 mm, MACN-In 38455a; 3 ♀♀ 9–12 mm, 4 ♂♂ 6–10 mm, MACN-In 38455b; 4 ovig. ♀♀ 9–10.4 mm, 3 ♀♀ 7.25–10 mm, 6 ♂♂ 7.5–9 mm, MACN- In 38455c; 1 ovig. ♀ 9 mm, 2 ♀♀ 7 and 10.5 mm, 1 ♂ 9 mm, MACN-In 38455d; 1 ovig. ♀ 9.8 mm, 3 ♀♀ 7.7–8 mm, 3 ♂♂ 7.6–9.8 mm, MACN-In 38455e .

New catalogue numbers

Shinkai Maru survey IV; sta. 33, 42 ◦ 30 ′ S, 59 ◦ 28 ′ W, 102 m depth, 23 July 1978: HOLOTYPE, ♂ 8 mm, MACN-In 33447; ALLOTYPE, ♀ 10 mm, MACN-In 33448; PARATYPE, ♀ 6 mm, MACN-In 33449.

Remarks

This new record of Lembos argentinensis Alonso de Pina, 1992 widens its latitudinal distribution to the Beagle Channel. Its association with M. pyrifera holdfasts is mentioned for the first time.