Ceradocus woorree Berents, 1983

Krapp-Schickel, Traudl, 2009, Maeridae, the Ceradocus group *, Zootaxa 2260 (1), pp. 598-642 : 610

Ceradocus woorree Berents, 1983

( Fig. 9 , 10 , Pl. 4E)

Ceradocus woorree Berents, 1983:106 , figs 5, 6. — Lowry & Stoddart, 2003: 176.

Material examined. Holotype: male, 6.9 mm, AM P31714, eastern end of Mangrove Beach , Lizard Island (14°41'S 145°27.5'E), from sediment, 1.5 m depth ( QLD 37 ) . Paratype, male, 5.9 mm, AM P31715 , Casuarina Beach , Lizard Island (14°40.5'S, 145°26.6'E), under stones at low tide mark ( QLD 39 ) .

Type locality. Lizard Island . Great Barrier Reef, Australia (14 o 41’S 145 o 27.5’E) .

Description. Based on holotype, male, 6.9 mm, AM P31714.

Head. Head subocular notch present, narrow. Antenna 1 longer than antenna 2; peduncle and flagellum subequal; peduncular articles 1 and 2 subequal, accessory flagellum with 5 articles. Antenna 2 peduncle 3 times as long as flagellum, gland cone extending beyond article 3; flagellum with 11 articles. Mandible palp article 1 distally acutely lengthened. Maxilla 1 inner plate quadrate. Maxilla 2 inner plate ovate, with mediofacial row of setae.

Pereon. Gnathopod 1 coxa subquadrate with anterodistally pointed and lengthened corner; propodus 0.9 x length of carpus. Gnathopod 2 asymmetrical, large palm transverse or nearly transverse, but palm much shorter than remaining posterior margin of propodus; in small gnathopod 2 propodus palm not defined, posterior margin smooth and rounded. Pereopod 5 basis posterior margin smooth, posterodistal corner lengthened into rounded lobe. Pereopods 6-7 basis posterior margin weakly serrated, posterodistal corner rectangular.

Pleon. Epimeron 1–3 all margins smooth, posterodistal corner a little lengthened and upturned. Uropod 3 peduncle half as long as rami; rami subequal, leaf-like, broadend, outer ramus with small distal robust setae; distally rounded, not truncated. Telson longer than wide, deeply cleft, apices distally pointed, each lobe with one larger and 2 smaller robust setae and one plumose seta.

Female (sexually dimorphic characters). No sexual difference.

Habitat. In sediment and under stones, 1.5 m depth.

Remarks. Ceradocus woorree is the only Ceradocus on the GBR without dorsal serrations on pleonites 1–3. According to Berents (1983) C. woorree is most similar to C. aviceps K.H. Barnard (1940) from South Africa.

Distribution. Australia. Queensland: Lizard Island ( Berents 1983).

Figures

FIGURE 9. Ceradocus woorree Berents, 1983, holotype, male, 6.9 mm, AM P31714, Mangrove Beach, Lizard Island, Great Barrier Reef (redrawn from Berents 1983 except urosome).

FIGURE 10. Ceradocus woorree Berents, 1983, holotype, male, 6.9 mm, AM P31714, Mangrove Beach, Lizard Island, Great Barrier Reef (redrawn from Berents 1983).