Waldeckia enoei Stephensen, 1931

Lowry, J. K. & Stoddart, H. E., 2009, Lysianassidae *, Zootaxa 2260 (1), pp. 561-597 : 575

Waldeckia enoei Stephensen, 1931

( Figs 9 , 10 )

Waldeckia enoei Stephensen, 1931: 3 , figs 1–3. —J.L. Barnard 1958: 102.

Waldeckia kroyeri enoei . — Pirlot, 1936: 268, fig. 105B. — Barnard & Karaman 1991: 542.

Material examined. 4 unsexed, AM P77899 ( JML 7-10 - 2 ); 2 unsexed, AM P77898 and 1 immature female, 4.0 mm, AM P78704 ( JML 7-10 - 3 ); 2 unsexed, AM P77897 ( JML 83 /7-3-11); 1 unsexed, AM P77900 ( QLD 92 ); 1 unsexed, AM P71054 ( QLD 1718 ) .

Type locality. Pulau Enu (as Poeloe Enoe), Aru Islands, Indonesia (~ 7°05’S 134°30’E) .

Description. Based on immature female, 4.0 mm, AM P78704.

Head and body. Body without dorsal carina. Head lateral cephalic lobes rounded, with apically rounded margins; eyes reniform. Antenna 1 slightly shorter than antenna 2; flagellum with weak 1-field callynophore, robust setae absent from proximal articles; calceoli absent; accessory flagellum with 5 articles. Antenna 2 less than 40% of body length; peduncle without brush setae, peduncular article 3 elongate, calceoli absent. Mouthparts forming a subquadrate bundle. Epistome / upper lip fused, broadly rounded. Mandible molar setose with vestigial triturating surface; palp attached extremely proximally, article 3 without A3-setae. Maxilla 1 outer plate with setal-teeth in 6/5 arrangement; setal-tooth 7, left and right symmetrical, cuspidate along most of straight inner margin; palp distal margin with apical robust setae. Maxilliped inner plates well developed, greater than half the length of outer plate; outer plates without apical robust setae; palp 4–articulate, article 4 well developed.

Pereon. Gnathopod 1 minutely parachelate; coxa large, about as long as coxa 2, subrectangular with concave anterior margin; basis slender, moderately setose along anterior margin, bottle-shaped setae present; ischium short; carpus short, subequal in length to propodus, without posterior lobe; propodus margins tapering, palm obtuse, entire, straight; dactylus inner margin not serrated. Gnathopod 2 subchelate; carpus longer than propodus; palm large, transverse, concave; dactylus well developed. Pereopod 4 coxa with well developed posteroventral lobe. Pereopod 5 coxa slightly lobate posteriorly; basis about as long as broad. Pereopod 7 basis posterodistally produced less than halfway along merus.

Pleon. Epimeron 3 posterior margin smooth, posterodistal corner subquadrate. Urosomite 1 dorsally straight. Uropod 1 rami subequal. Uropod 2 rami subequal, inner ramus without marginal constriction. Uropod 3 rami distinctly unequal, with plumose setae on each ramus; outer ramus 2–articulate, article 2 short, inner ramus not reaching end of article 1 of outer ramus. Telson distinctly longer than broad, deeply cleft, without dorsal robust setae, with 1 apical robust seta on each lobe.

Habitat. Sediment (mud, maerl, sand, shelly sand, coral debris, broken shell, stones), 13 to 34 m depth.

Remarks. Waldeckia enoei is the only lysianassid on the GBR with parachelate first gnathopods. The anterior margins of the basis of the first gnathopods have unique bottle-shaped setae which separates W. enoei from all other Waldeckia species and from all other species on the GBR.

Distribution. Australia. Queensland: Lizard Island (current study). Indonesia: Aru Islands ( Stephensen 1931; Pirlot 1936); Misool Island, Ceram Sea ( Pirlot 1936). Timor. North-east coast ( Pirlot 1936).

Figures

FIGURE 9. Waldeckia enoei Stephensen, 1931, female, 4.0 mm, AM P78704, Osprey Island, near Lizard Island, Great Barrier Reef.

FIGURE 10. Waldeckia enoei Stephensen, 1931, female, 4.0 mm, AM P78704, Osprey Island, near Lizard Island, Great Barrier Reef.