New species of Lucicutia and taxonomic status of L. grandis (Copepoda, Calanoida, Lucicutiidae) Author Markhaseva, E. L. Author Ferrari, Frank D. text Journal of Natural History 2005 2005-04-30 39 15 1077 1100 http://dx.doi.org/10.1080/00222930400005740 journal article 10.1080/00222930400005740 1464-5262 5214307 Lucicutia wolfendeni Sewell, 1932 ( Figures 8 , 9 ) Lucicutia wolfendeni Sewell 1932 , p 289 ; Tanaka 1963 , p 46 –49, Figure 171; Vervoort 1957 , p 130 –131, Figure 120, 121; Hulsemann 1966 , p 738 , Figures 50, 51, 73, 78, 102; Heptner 1971 , p 146 , Figure 30; 1986, p 53–54. Lucicutia grandis ( Giesbrecht, 1895 ) : Wolfenden 1911 , p 315 –316, Figure 58; Sars 1924 – 25, p 208, Plate 56; Brodsky 1950 , p 328 –329, Figure 227; Vervoort 1957 , p 131 ; Hernández and Suárez-Moralez 1994, p 169, Figure 89. Female Total length 6.5–7.7 mm . Cephalosome with small triangular or rounded lateral protrusions; sometimes lateral sides are nearly smooth ( Figure 8A ). Rostral rami widely spaced, tapering at tips; tips occasionally convergent ( Figure 8G–I ). Genital double-somite of female with oval-elongate plug ( Figure 8D, E ). Anal somite shorter than two preceding somites together ( Figure 8B, C ), dorsal side only slightly swollen ( Figure 8D, E ). Caudal rami in dorsal view 2.9–3.1 times longer than anal somite and eight times longer than wide ( Figures 8B, C ). Antennule exceeding caudal rami by two to three segments. Medial seta of exopodal segment 2 of P5 attenuate, very thin at tip ( Figure 8J ). Male Total length 5.7 mm . Lateral sides of cephalosome without pointed protrusions ( Figure 9A ). Antennule of 21 articulated segments, segment 18 is the longest ( Figure 9D, E ). First exopodal segment of right P5 as long as or slightly longer than the second exopodal segment. Second endopodal segment without hairs; basipod with medial projection ( Figure 9G ). Basipod of left P5 medial-distally with a moderate projection with marginal teeth; exopodal segment 3 elongate oval-triangular ( Figure 9F ). P5 of males from the north-western Pacific Ocean and Southern Ocean identical in structure. Remarks Published size of females: 8.2 mm ( Sars 1924 ); 7.65–8.75 ( Heptner 1986 ). Published size of males: 6.0–8.0 ( Brodsky 1950 ) and 7.00– 7.50 mm ( Heptner 1986 ). Females of L. wolfendeni are distinguished from both L. grandis and L. bradyana by a shorter anal somite which is not swollen; a large oval-elongate plug of the genital double-somite; the usually smoothly rounded or low-triangular lateral sides of the cephalon and larger sizes; males differ in the structure of left and right basipods and left endopod of P5 as discussed for L. grandis ( Figures 2F–K , 6 , 7, 9F, G), and larger size. One female specimen had asymmetrical caudal rami. In other diagnostic character states, this specimen corresponds to L. wolfendeni . A specimen with asymmetrical caudal rami was reported earlier ( Wolfenden 1911 , as L. grandis ) but correctly considered to be L. wolfendeni by Heptner (1971) . Figure 8. Lucicutia wolfendeni . Female. (A) Anterior part of cephalosome, dorsal; (B, C) urosome, dorsal; (D–F) urosome, right lateral; (G–I) rostrum, anterior; (J) P5. (A, C, F, I, J) south-eastern Pacific Ocean, Eltanin cruise 10, station 868; (B, D) north-western Pacific Ocean, off Kamchatka, Severnyi Polyus station 1; (E, H) south-eastern Pacific Ocean, Eltanin cruise 11, station 911; (G) south-eastern Pacific Ocean, Eltanin cruise 10, station 874. Scale bars: 0.1 mm. Figure 9. Lucicutia wolfendeni . Male. (A) Anterior part of cephalosome, dorsal; (B) posterior corners of prosome and urosome, dorsal; (C) same, left lateral; (D) 15–17 articulated segments of antennule; (E) 18–21 articulated segments of antennule; (F) left P5; (G) right P5. (A–E) South-eastern Pacific Ocean, Eltanin cruise 10, station 868; (F, G) north-western Pacific Ocean, off Kamchatka, Severnyi Polyus station 1. Scale bars: 0.1 mm. Distribution Lucicutia wolfendeni is found in all oceans except the Arctic Ocean ( Hulsemann 1966 , p 738 ; Heptner 1986 , Tables 1–3).