Photosella charlotteae ( Lowry & Stoddart, 2009 )

Lowry, J. K. & Stoddart, H. E., 2011, The tryphosine genera Photosella gen. nov. and Tryphosella Bonnier, 1893 (Crustacea: Amphipoda: Lysianassoidea: Lysianassidae: Tryphosinae) in Australian waters 2956, Zootaxa 2956 (1), pp. 1-76 : 6-7

publication ID

https://doi.org/ 10.11646/zootaxa.2956.1.1

DOI

https://doi.org/10.5281/zenodo.5288134

persistent identifier

https://treatment.plazi.org/id/DC2F87F6-F608-FF96-A69E-FE0FB908FE92

treatment provided by

Felipe

scientific name

Photosella charlotteae ( Lowry & Stoddart, 2009 )
status

 

Photosella charlotteae ( Lowry & Stoddart, 2009)

( Fig. 1 View FIGURE 1 )

Tryphosella charlotteae Lowry & Stoddart, 2009: 587 View Cited Treatment , figs 17, 18.

Type locality. 100 metres north-east of sand spit, One Tree Island , Queensland, Australia, 23°30'S 152°05'E, 1 m depth GoogleMaps .

Material examined. Victoria: 1 specimen, MV J3610 , Crib Point, Western Port , 38°21’S 145°14’E, 12 m, coarse sand, Smith-McIntyre grab, 29 September 1964, Marine Studies Group, Fisheries and Wildlife Department, Ministry for Conservation GoogleMaps , Victoria, CPBS stn C4; 1 specimen, MV J3614 , Crib Point, Western Port , 38°21.63’S 145°15.08’E, 9 m, sand, Smith-McIntyre grab, 23 February 1965, Marine Studies Group, Fisheries and Wildlife Department, Ministry for Conservation GoogleMaps , Victoria, CPBS stn 25S; 1 specimen, MV J3617 , Crib Point, Western Port, 38°21.33’S 145°13.64’E, 15 m, fine sand and mud, Smith-McIntyre grab, 8 April 1965, Marine Studies Group , Fisheries and Wildlife Department , Ministry for Conservation , CPBS stn 31S; 4 specimens, MV J3299 , Port Phillip Bay , 38°00.0'S 144°46.3'E, 11 m, sand, Smith-McIntyre grab, 10 June 1971, stn PPBES 913 ; 1 specimen, MV J3298 , Port Phillip Bay , 38°02.3'S 14444.7'E, 13 m, sand, Smith-McIntyre grab, 10 June 1971, stn PPBES 922 ; 1 male, MV J62293 View Materials , 66 km south of Rodondo Island , central Bass Strait , 39°48.6'S 146°18.8'E, 82 m, sand, silt and mud, epibenthic sled, 13 November 1981, R. Wilson, RV Tangaroa , stn BSS-158S GoogleMaps . Tasmania: 1 female, 14.5 mm, MV J11262 View Materials , 25 km northeast of Deal Island, eastern Bass Strait , 39°14.8'S 147°31.5'E, 57 m, medium sand, Smith-McIntyre grab, 18 November 1981, RV Tangaroa , stn BSS 174G GoogleMaps . South Australia: 1 specimen, AM P.69118, 5 km north-west of Port Davis Creek, Port Pirie, Spencer Gulf , 33°16'S 137°51'E, corer, Posidonia sinuosa bed, stn 801-C4/7; 1 female, SAM C 6946, 200 m offshore, north point of Marum Island , Sir Joseph Banks Group , approx. 34º30'S 136º15'E, 6 m, on sponge and under rocky reef, 11 January 1984, W. Zeidler; 1 male, MV J62308 View Materials north side of West Island , Encounter Bay , 35°37'S 138°36'E, 4 m, sand patch in Heterozostera meadow, 21 March 1985, G.C.B. Poore & H.M. Lew Ton, stn MV SA-48 GoogleMaps .

Diagnostic description. Head lateral cephalic lobe subtriangular, apically rounded; eyes red (fading in alcohol), large, subtriangular with ventral concave lens. Antenna 1 flagellum with strong 2-field callynophore, robust setae absent from proximal articles; calceoli present. Antenna 2 peduncular articles 4 and 5 not enlarged; flagellum short, calceoli absent. Epistome/Upper lip epistome less produced than upper lip, straight. Mandible molar with asymmetrically reduced column, proximally setose, distally triturating. Maxilla 1 outer plate setal-tooth 7, left and right symmetrical, cuspidate along most of straight inner margin; palp distal margin with apical robust setae. Maxilliped outer plate with 2 short apical robust setae.

Gnathopod 1 subchelate; coxa large (length 1.9 x breadth), subrectangular, distally subovate; basis moderately setose along anterior margin; ischium short (length 1.5 x breadth); carpus long (length 2.1 x breadth), subequal in length to propodus, without posterior lobe; propodus margins subparallel, palm moderately acute. Gnathopod 2 propodus palm moderately obtuse. Pereopod 4 coxa with distinct lateral ridge. Pereopod 5 coxa with distinct lateral ridge; basis about as long as broad, with photophore.

Epimeron 3 posterior margin smooth, posteroventral corner broadly rounded. Uropod 3 outer ramus article 2 short, with plumose setae on both rami. Telson deeply cleft, with dorsal robust setae, with 1 or 2 apical robust setae on each lobe.

Male (sexually dimorphic characters). Antennae 1 and 2 calceoli present. Antenna 2 peduncular article 4 slightly enlarged.

Remarks. According to Lowry & Stoddart (2009) P. charlotteae is most similar to P. mucronata ( Pirlot, 1936) . Both species have a well developed photophore on the basis of pereopod 5, but only T. charlotteae has a strong lateral ridge on the pereopod 4 coxa. Lowry & Stoddart (2009) recorded T. charlotteae from the Great Barrier Reef as far south as Moreton Bay. In this paper we extend the range south to Bass Strait.

There is a great deal of variation in the honeycomb appearance of the cuticle in this species. In the material reported by Lowry & Stoddart (2009) there was almost none present; the specimen illustrated in Figure 1 View FIGURE 1 shows a very strong form. We cannot see any pattern to this variation and its loss might be an artefact of preservation.

Distribution. Eastern and southern Australia; 4–15 m and 57–82 m depth.

MV

University of Montana Museum

R

Departamento de Geologia, Universidad de Chile

RV

Collection of Leptospira Strains

AM

Australian Museum

SAM

South African Museum

Kingdom

Animalia

Phylum

Arthropoda

Class

Malacostraca

Order

Amphipoda

Family

Tryphosidae

Genus

Photosella

Loc

Photosella charlotteae ( Lowry & Stoddart, 2009 )

Lowry, J. K. & Stoddart, H. E. 2011
2011
Loc

Tryphosella charlotteae

Lowry, J. K. & Stoddart, H. E. 2009: 587
2009