Microphoxus cornutus (Schellenberg, 1931)

Alonso, Gloria M., Pina, De, Rauschert, Martin & Broyer, Claude De, 2008, A catalogue of the Antarctic and sub-Antarctic Phoxocephalidae (Crustacea: Amphipoda: Gammaridea) with taxonomic, distribution and ecological data, Zootaxa 1752, pp. 1-40 : 19-20

Microphoxus cornutus (Schellenberg, 1931)

Schellenberg, 1931: 68–69, fig. 35. ( Metharpinia cornuta ). Barnard J.L., 1958a: 146 (by implication). ( Paraphoxus cornutus ). Barnard J.L., 1958b: 117. ( Paraphoxus cornuta ). Barnard J.L., 1960: 186, 194, 224, 271, 290. ( Paraphoxus cornutus ). Barnard and Drummond, 1976: 528. ( Metharpinia cornuta ). Lowry and Bullock, 1976: 126. ( Paraphoxus cornutus ). Barnard and Drummond, 1978: 24, 32, 145, 416. ( Metharpinia ? cornuta ). Barnard J.L., 1979: 370.

Barnard J.L., 1980: 106, 110–115, figs. 2–3(in part)–4(in part). Barnard and Barnard, 1990: 88.

Barnard and Karaman, 1991: 623.

Gonzalez, 1991: 61.

Wakabara et al., 1991: 73, 74.

De Broyer and JaŻdŻewski, 1993: 84.

Jarrett and Bousfield, 1994a: 64, table 3.

Wakabara and Serejo, 1998: 578.

De Broyer and Rauschert, 1999: 286.

Valério-Berardo et al., 2000: 122 (eco).

Alonso de Pina, 2001: 535.

Bustamante, 2002: 62, 70, 76, 77.

Alonso de Pina, 2003: 1029, 1030, 1045–1051, 1055, 1057, figs. 10–12, 16, tables 3, 4. Chiesa et al., 2005: 171, fig. 2B, table 2.

Distribution: M +

Magellan Area: Schwedische Expedition nach den Magellansländern 1895–1897, Punta Arenas, 53°10’S 70°54’W, 13–14 m (bottom: sand, algae) (revised by JLB 60, 80); Hamburger Magalhaensische Sammelreise 1892–1893, Punta Arenas, 53°10’S 70°54’W, 4 m; Bahía Ushuaia, [54°49’S 68°16’W], low tide ( AS 31); east end of Magellan Strait, [52º20’S 68º20’W], 11 m (bottom: fine sand) (JLB 80); Puerto Montt, 41°30’S 73°10’W (EG 91); Argentina, Golfo Nuevo, Bahía Nueva, Golfito beach, 42°46’S 65°02’W, 8–10 m (gear: samples extracted with a corer of 20 cm diameter during low tide); Península Valdés, Colombo beach (near Punta Pardelas), 42°37’S 64°16’W, 2 m, 0.4 m (gear: small dredge during mid-tide); Punta Pardelas, 42°37’S 64°16’W, 2–4 m (small dredge during low tide); Puerto Madryn beach, 42°46’S 65°02’W, intertidal (gear: corer); El Doradillo beach (about 11 Km north Puerto Madryn), 42°46’S 65°02’W (stomach content of coastal fish); Golfo San José, Fracasso beach, 42°25’S 64°10’W, intertidal (gear: corer); Crucero San José I 1984, Golfo San José, 42°20’S 64°20’W, 4 m, 19 m (gear: Van Veen grab) (GMA 03); Isla de los Pájaros, approx. 42º25’S 64º30’W, low tide, low mid littoral (coll. Orensanz 1975) (GMA unpubl.); off El Riacho, approx. 42º24’S 64º35’W, mid-littoral (coll. Orensanz 2005) (GMA unpubl.); San Román, 42º14’S 64º13’W, coast (bottom: sand) (coll. Orensanz 1975) (GMA unpubl.); Península Ushuaia, 54°51’S 68°19’W, 5–10 m (gear: Va n Ve en g ra b) (I C H et al. 05); Crucero CIMAR FIORD 3 “Vidal Gormaz” Cruise), Estrecho de Magallanes, Paso Ancho, sta. 5, 53 °3.6’S 70°32.8’W, 82 m; Isla Lennox, Paso Richmond, sta. 42, 55 °11.5’S 66°46.3’W, 52 m; Chile, Bahía San Juan, 0.2 m (MR unpubl.).

Depth range: 0– 82 m.

Type-locality: Magellan Area: Schwedische Expedition nach den Magellansländern 1895–1897, Punta Arenas, 53°10’S 70°54’W, 13–14 m (bottom: sand, algae) (revised by JLB 60, 80); Hamburger Magalhaensische Sammelreise 1892–1893, Punta Arenas, 53°10’S 70°54’W, 4 m; Bahía Ushuaia, [54°49’S 68°16’W], low tide ( AS 31).

Ecology: Collected from bottoms with sand, algae.

Extralimital distribution: Campaña AUO2/93, Argentina, Buenos Aires, El Rincón, approx. 30°10’– 31’S 61°25’–59’W, 8–17 m (bottom: sand, clay, mud; gear: Van Veen grab); Mar del Plata beach, 30°03’17’’S 57°31’18’’W, 13 m (bottom: sand, crushed shells) (GMA 03); Brazil, São Paulo, 23°25’– 24°22’S 44°33’– 45°16’W, 18–25 m (bottom: muddy sand) (YW et al. 91), 101 m (VB et al. 00).

Extralimital depth range: 8– 101 m.

Type material location: NRS, Stockholm.

Remarks: Microphoxus J.L. Barnard, 1960 contains five known species, one from Costa Rica, three from Brazil and the present species from the Magellan area herein checked. All the species are distinguished from each other by many morphological characters combined: length of rostrum and rami of uropods, setal formulas on article 4 of antenna 2, setation of mouthparts, epimera and appendages.

Recently, Chiesa et al. (2005) recorded Microphoxus cornutus in Tierra del Fuego and Rauschert (unpubl.) in southern Chile. Alonso de Pina (unpubl.) expanded its distribution in Chubut, Golfo San José.