Jerbarnia stocki Thomas & Barnard, 1990

Krapp-Schickel, Traudl, 2009, Maeridae, the Ceradocus group *, Zootaxa 2260 (1), pp. 598-642 : 617-620

Jerbarnia stocki Thomas & Barnard, 1990

( Figs 14 , 15 )

Jerbarnia stocki Thomas & Barnard 1990: 169 , figs 1–3. — Lowry & Stoddart, 2003: 190.

Material examined. 1 unknown sex, AM P77830 ( JDT / LIZ 15); 3 unknown sex, AM P77733 ( JDT / LIZ 16); 1 unknown sex, AM P77829 ( JDT / LIZ 17).

Type locality. Off Lizard Head , Lizard Island, Queensland, Australia (14°40’S 145°28’E) .

Description. Based on that of Thomas & Barnard (1990), paratype, female, 4.3 mm.

Head. Head anterior margin with wide rounded excavation. Eye consisting of a patchy assemblage of ommatidia. Antenna 2 shorter than antenna 1. Mandible stout with strong molar. Maxilla 1 inner plate slender, with few apical setae only, palp with two articles. Maxilla 2 inner plate half width of outer plate. Maxilliped palp with 3 articles, outer plate extending beyond palp article 2.

Pereon. Gnathopod 1 and 2 similar; Gnathopod 1 carpus longer than propodus. Coxa 3 widened anterodistally. Pereopods 4–7, coxa wider than long. Pereopods 5–7 basis slender, not lobate.

Pleon. Pleonites 1–3 dorsally smooth. Epimera posteroventral angles rounded. Urosomites 1–2 with bidentate posterodorsal margins. Uropod 1 rami longer than peduncle, slender, equal in length, with long robust distal setae. Uropod 2 much shorter than uropod 1. Uropod 3 elongate, peduncle almost reaching apex of rami of uropod 1, with robust setae; rami subequal, very long, ovatolanceolate. Telson quadrate, deeply incised.

Male (sexually dimorphic characters). Based on description of Thomas & J.L. Barnard (1990), holotype, male, 3.7 mm. Gnathopod 2 gigantic, with coxa, basis and ischium strongly elongate; propodus of different shape from that of females, elongate and widened with oblique palm and defining spine.

Variation. Small specimens have second article on outer ramus of uropod 3.

Habitat. Rubble, 2 m.

Remarks. Differing from all species of the Ceradocus- group by the strikingly long coxa 2.

Distribution. Australia. Queensland: Lizard Island ( Thomas & Barnard 1990, current study).

Linguimaera Pirlot, 1936

Figures

FIGURE 14. Jerbarnia stocki Thomas & J.L. Barnard, 1990, male holotype, 3.7 mm, details of gnathopods 1–2 (G1f, G2f) of female paratype, Lizard Island, Great Barrier Reef (redrawn from Thomas & J.L. Barnard 1990).

FIGURE 15. Jerbarnia stocki Thomas & J.L. Barnard, 1990, male holotype, 3.7 mm, details of gnathopods 1–2 propodi and dactyli (G1f, G2f) of female paratype, Lizard Island, Great Barrier Reef. (redrawn from Thomas & J.L. Barnard 1990).