Victoriopisa marina Lowry & Springthorpe, 2005, n.sp.
Creators: name: Lowry, JK
name: Springthorpe, RT
Publisher: name: Zenodo
Year: 2005
Subjects: Biodiversity
Taxonomy
Animalia
Arthropoda
Malacostraca
Amphipoda
Eriopisidae
Victoriopisa
Victoriopisa marina

description: Victoriopisa marina n.sp.
Figs. 47–49
Victoriopisa sp. 2 Jones et al., 1986: 541
Victoriopisa sp. Jones, 1987: 623.
Type material. HOLOTYPE, ♂, 8.1 mm, AM P61227, Cobblers (Bate Bay), New South Wales, Australia, [approx. 34°07'S 151°10'E], 65–70 m, grab, Ecology Lab, October 1990, stn T3-135. 1 PARATYPE, ♀, 7.4 mm, AM P41961, 800 m southwest of airport runway, Botany Bay, New South Wales, Australia, 33°58.33'S 151°10.22'E, 7 m, Australian Museum party, 7 April 1992, stn NSW-771.
Additional material examined. New South Wales: 1♂, 1♀, AM P53976, Royal Motor Yacht Club, Pittwater, 33°39.2'S 151°18.0'E, fine mud, 12 m, C. Rose, December 1992, stn RMYC A5. 1♂, AM P61360, between Juno Head and Hungry Beach, Hawkesbury River, 33°34'S 151°16'E, muddy sand, 10 m, Smith-McIntyre grab, A.R. Jones & C.
Watson-Russell, 7 August 1979, stn HES 1–3.
Type locality. Cobblers (Bate Bay), New South Wales, Australia [approx. 34°07'S 151°10'E], 65–70 m.
Description. Based on holotype male, AM P61227 and paratype female, AM P41961.
Head. Eyes absent; lateral cephalic lobes absent, lacking notch or slit, anteroventral corner rounded. Antenna 1 longer than antenna 2; peduncular article 1 shorter than article 2, without robust setae along posterior margin; peduncular article 2 geniculate with article 3; flagellum with 30 articles; accessory flagellum with 2 articles. Antenna 2 peduncular article 2 cone gland not reaching to end of peduncular article 3; article 4 shorter than article 5; flagellum with 2–3 articles. Mandible palp article 3 rectolinear, with setae mostly terminal, longer than article 1; article 2 subequal to or longer than article 3; article 1 produced distally, shorter than article 2, about twice as long as broad. Maxilla 1 inner plate setose along entire inner margin.
Pereon. Gnathopod 1 coxa anteroventral corner produced, rounded, posteroventral corner notch absent; merus without posterodistal spine; propodus palm acute, convex, defined by posterodistal corner, defined by posterodistal robust setae. Gnathopod 2 not sexually dimorphic; subchelate; coxa posteroventral corner notch absent; merus with subquadrate posteroventral corner; carpus compressed; propodus without medial depression, without strong concentration of setae, palm acute, concave or sinusoidal, sculptured, with sparse robust setae and with group of anterodistal robust setae, defined by posterodistal robust setae, defined by posteroventral corner; dactylus apically acute/subacute. Pereopod 5 basis posterior margin straight, posteroventral corner narrowly rounded or subquadrate. Pereopod 6 coxa anterior lobe ventral margin slightly produced, rounded; basis posterior margin straight, posteroventral corner narrowly rounded or subquadrate. Pereopod 7 basis posterior margin convex, with posterior margin smooth or minutely castelloserrate, posteroventral corner broadly rounded.
Pleon. Epimeron 1 posteroventral corner broadly rounded. Epimera 1–2 posteroventral margin without spines above posteroventral corner. Epimeron 3 posterior margin smooth, posteroventral corner with small acute spine or with strongly produced acute spine. Urosomite 1–3 dorsally smooth. Uropod 3 inner ramus scale-like, much shorter than outer ramus; outer ramus much longer (more than 2× length) than peduncle, 2-articulate. Telson without apical robust setae, apical conical extension absent.
Habitat. Marine and estuarine; littoral and continental shelf; fine to sandy mud, 7 to 70 m depth.
Remarks. Victoriopisa marina is most similar to species of Victoriopisa with slender seventh pereopods. It differs from all of these species in the extremely broadened palm of gnathopod 1 and the shape of the palm of gnathopod 2.
Distribution. New South Wales: Hawkesbury River (Jones et al., 1986; Jones, 1987); Pittwater; Botany Bay; Cobblers, Bate Bay (all AM).
Australian geographic areas. Southeastern Australia.
description: Published as part of Lowry, JK & Springthorpe, RT, 2005, New and Little-known Melitid Amphipods from Australian Waters (Crustacea: Amphipoda: Melitidae), pp. 237-302 in Records of the Australian Museum 57 on pages 285-286, DOI: 10.3853/j.0067-1975.57.2005.1463, http://zenodo.org/record/15323482