Podoprionides moonamoona, Stoddart & Lowry, 2010

Stoddart, H. E. & Lowry, J. K., 2010, The family Opisidae (Crustacea: Amphipoda: Lysianassoidea) in Australasian waters, Zootaxa 2479 (1), pp. 22-38 : 33-34

Podoprionides moonamoona sp. nov.

( Figs 10–13 )

Type material. HOLOTYPE, female, 2.8 mm, AM P.69034, near mouth of Moona Moona Creek, Jervis Bay, New South Wales, Australia, 35°03.5'S 150°41'E, 4.5 m, on test of solitary ascidian Herdmania momus in Ecklonia bed, 17 October 1981, P.B. Berents, stn NSW-235. PARATYPES: female, AM P.69035 and male, 1.8 mm, AM P.69036 and 44 specimens, AM P.69037, same data as holotype; 2 specimens, AM P.69038, same data, 19 December 1981, stn NSW-236; 2 specimens, AM P.69039, same data, 22 May 1982, stn NSW- 241.

Type locality. Jervis Bay , New South Wales, Australia, 35°03.5'S 150°41'E, 4.5 m depth .

Etymology. The species name refers to the type locality.

Diagnostic description. Antenna 1 callynophore absent; calceoli absent in male. Eyes present. Mouthpart bundle subconical. Mandible left incisor with straight margin, minutely serrate, right with strongly convex margin, smooth; lacinia mobilis absent; molar absent; palp attached extremely proximally, article 2 longer than article 3. Maxilla 1 outer plate with 9 setal teeth in a 6/3 crown arrangement, outer row with cusps in 1 row; palp apical margin serrate, without apical setae. Maxilliped palp 3-articulate. Gnathopod 1 chelate; ischium short; carpus posterior margin produced into broad triangular lobe; propodus subquadrate, proximal margin produced into strong posteroproximal lobe, palm smooth with a small central bump, posterodistal corner produced into long acute spine, without robust setae. Gnathopod 2 minutely subchelate; carpus much longer than propodus (about 2 x); palm transverse. Pereopod 4 coxa posteroproximal excavation small. Pereopods 5–7 basis with strongly serrate posterior margin; dactylus short, slender. Epimeron 3 posterior margin smooth, posteroventral corner rounded. Uropod 3 peduncle subequal to inner ramus, without distoventral spur; inner ramus shorter than outer ramus; outer ramus 2-articulate, article 2 long; rami without robust setae, without plumose setae. Telson about as long as broad, moderately cleft (about 56%), without dorsal robust setae.

Male. Same as female except: Gnathopod 1 palm with large irregular central protrusion; dactylus with irregular protrusion on inner margin. Pereopod 7 merus anterodistal corner with single very large, distally complex robust seta.

Remarks. Podoprionides moonamoona differs from both P. incerta and P. akantha in the absence of a callynophore, the ornamentation of gnathopod 1 palm, and the peduncle of uropod 3 subequal to the rami, which is based on our examination of the orginal type of P. incerta .

Distribution. Eastern Australia; 4.5 m depth

Figures

FIGURE 10. Podoprionides moonamoona sp. nov. Holotype female, AM P.69034.

FIGURE 11. Podoprionides moonamoona sp. nov. Holotype female, AM P.69034; *MP, U3 and T, paratype female, AM P.69035. Scales for A1, A2, MD, U1, U2 represent 0.1 mm; remainder represent 0.05 mm.

FIGURE 12. Podoprionides moonamoona sp. nov. Holotype female, AM P.69034. Scale represents 0.1 mm.

FIGURE 13. Podoprionides moonamoona sp. nov. Paratype male, AM P.69036.