Kaloketos, Koenemann, Stefan, Iliffe, Thomas M. & Yager, Jill, 2004

Koenemann, Stefan, Iliffe, Thomas M. & Yager, Jill, 2004, Kaloketos pilosus, a new genus and species of Remipedia (Crustacea) from the Turks and Caicos Islands, Zootaxa 618, pp. 1-12 : 3

Kaloketos new genus ( Figs. 1–5 )

Type species. Kaloketos pilosus n. sp.

Etymology. Kaloketos means 'beautiful sea monster' and is composed of the Greek words kalos (beautiful) and ketos (sea monster). The gender is masculine.

Diagnosis. First trunk segment small, lateral pleurites greatly reduced ( Fig. 2 A); all remaining pleural tergites well developed. Trunk sternites with pointed posterolateral corners ( Fig. 2 A). Frontal filaments with short medial processes ( Fig. 3 C). Dorsal flagella of antennules very long ( Figs. 1 ; 3A). Maxillipeds distinctly larger than maxillae, both limbs covered with dense fields of short, feathered setae on medial margins of most segments; horseshoe­type distal claws on maxillae and maxillipeds subequal, with about 18 small denticles ( Figs. 4 ; 5B). Larger trunk limbs (of mid­trunk region) sturdy, with expanded endo­ and exopods; second segment of endopod with expanded medial lobe bearing up to 32 short spines ( Fig. 2 B). Anal somite slightly wider than long; caudal rami about 20% longer than anal somite Fig. 2 F).

Figures

FIGURE 1. Kaloketos pilosus n. gen., n. sp. Photo of 29 mm holotype.

FIGURE 2. Kaloketos pilosus n. sp., 29 mm holotype. A, above: dorsal view of head shield with anterior trunk segments 2 – 4; below: ventral view of three trunk segments, with sternites and sternal bars of segments 6, 14 and 15, respectively (scale bar for sternites 6, 14 and 15 = 1 mm). B, 14 th thoracopod, with enlarged detail of spine row on expanded margin of endopod (x, serrate spine; y, setulose spine). C, second thoracopod. D, thoracopod from posterior trunk near abdominal somite. E, plumose seta. F, anal segment and caudal rami (scale bar = 0.5 mm). Scale bar B – D = 1 mm.

FIGURE 3. Kaloketos pilosus n. sp., 29 mm holotype. A, antennule (scale bar = 1 mm). B, antenna. C, frontal filaments. D, labrum (scale bar = 0.5 mm). E, right mandible. F, enlarged lacinia mobilis and incisor process of left mandible. Scale bar B, C, E = 0.5 mm.

FIGURE 4. Kaloketos pilosus n. sp., 29 mm holotype. A, maxillule. B, maxilla. C, maxilliped. D, claw of maxilla. E, finely serrate spine of segment 2, and segments 3 – 4 of maxillule. Roman numerals indicate individual limb segments; scale bar = 1 mm.

FIGURE 5. Kaloketos pilosus n. sp., 29 mm holotype. A, medial surface of maxilla (segments 4 and 5). B, distal claw of maxilla. C, enlarged feathered setae of maxilla.