Ceradocus (Denticeradocus) ramsayi (Haswell 1879)

Ceradocus ramsayi (Haswell)

Melita (?) Ramsayi Haswell, 1880b:264–265, pl. 10: fig. 1.

Maera rubromaculata.—Stebbing 1888:1008–1014, pls. 95A, 96B [not Stimpson].

Ceradocus (Denticeradocus) ramsayi.—Sheard 1939:283–285, fig. 3 [with references].

DIAGNOSIS.—In alcohol, eyes lacking black pigment; slit of lateral cephalic lobe deep, edges fully appressed, anteroventral corner below slit with small sharp tooth; antenna 1 with 4–5 ventral spines on article 1, distalmost spines each paired with 1 or more setae; gland cone of antenna 2 simple, reaching or exceeding apex of article 3 of peduncle; peduncle of antenna 2 well exceeding peduncle of antenna 1; article 3 of mandibular palp about two-thirds as long as article 1; coxa 1 with lateral ridge highly posteriad; article 4 of gnathopods 1–2 with sharp posteroventral tooth; gnathopod 2 alike in both sexes, highly unequal on left and right sides (either side not consistently enlarged), smaller gnathopod 2 with subtransverse, simple, convex palm defined by tooth, large gnathopod with subtransverse, convex palm bearing elongate defining tooth and 0–2 other palmar sinuses dividing off 1–3 other truncate teeth not reaching quite as far as defining tooth, articles 2–3 with large anterodistal lobes on both faces; posteroventral corner of article 2 on pereopods 3–4 with blunt projection, very sharp and long but not attenuate on pereopod 5; telson with weakly attenuate apices, each bearing 4–7 spines, generally 2–4 spines elongate, 1 apicolateral feathered seta (hidden in Figure 128T u), and 2 basolateral feathered setae; pleonites 1–3 dorsally serrate evenly or lateralmost tooth on pleonite 3 enlarged, pleonite 4 generally with 5 dorsal teeth, each lateral tooth slightly to strongly enlarged, tooth on midline slightly smaller than extreme laterals but larger than laterals next contiguous; dorsal teeth of pleonite 5 variable, either (a) with 1 midline tooth slightly enlarged and 1 tooth on either side of it, or (b) with 4 teeth altogether, middle pair enlarged and embracing midline gap; thus, from side view in either case (a, b), and including pleonite 4, specimens appearing to have enlarged middle tooth as stated by Sheard; pleonal epimera 1–2 each with small definitive tooth, 1 large tooth above and 0—1 tiny tooth below; epimeron 3 with 2–4 large posterior teeth and 1–2 small posteroventral teeth: epimera 1–2 with lateral ridge.

DISTRIBUTION.—Warm-temperate Australia, littoral and sublittoral.