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Calanoida ( Order ) |
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Clausocalanoidea ( Superfamily ) |
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Aetideidae ( Family ) |
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Chiridius ( Genus ) |
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Chiridius molestus Tanaka, 1957 (F,M) | |
| | | | | | | Syn.: | Chiridius subgracilis Park, 1975 b (p.285, figs.F,M, Rem.); Bradford & Jillett, 1980 (p.23, figs.F,M, fig.73, distribution chart); Mazzocchi & al., 1995 (p.143, figs.F,M, Rem.);
? Chiridius gracilis : A. Scott, 1909 (p.42, figs.F);
Chiridius gracilis : Farran, 1929 (p.208, 229, fig.F); Bradford, 1970 a, figs.M) | | | | Ref.: | | | Tanaka, 1957 a (p.53, Descr.M, figs.M); Tanaka & Omori, 1970 (p.118); Markhaseva, 1996 (p.113, Descr.F, figs.F,M); Vives & Shmeleva, 2007 (p.556, figs.M, Rem.) |  issued from : E.L. Markhaseva in Proc. Zool. Inst. RAN, St. Petersburg, 1996, 268. [p.115, Fig.86]. Female (from different specimens and stations).
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 issued from : E.L. Markhaseva in Proc. Zool. Inst. RAN, St. Petersburg, 1996, 268. [p.116, Fig.87]. Male.
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 issued from : T. Park in Bull. Mar. Sci., 1975, 25 (2). [p.286, Fig.9]; As Chiridius subgracilis. Female (from Gulf of Mexico): a, habitus (dorsal); b, c, posterior part of metasome and urosome (dorsal, lateral, respectively); d, exopod of P1; e, P2; f, lateral portion of third exopodal segment of P2 (anterior); g, P3; h, P4. P1-4: legs (anterior).
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 issued from : T. Park in Bull. Mar. Sci., 1975, 25 (2). [p.227, Fig.10]. As Chiridius subgracilis. Male (from Gulf of Mexico): a, b, habitus (dorsal, lateral, respectively); c, forehead (lateral); d, distal part of Mxp; e, P1; f, P2; g, third exopodal segment of second leg (anterior); h, fifth pair of legs (posterior). P1-2: legs (anterior).
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 issued from : J.M. Bradford & J.B. Jillett in Mem. N.Z. Oceanogr. Inst., 86, 1980. [p.24, Fig.12]. As Chiridius subgracilis; Female: A, habitus (dorsal); B, genital segment (lateral left side); C, P2; D, endopod of P2 (anterior surface). Male: E, habitus (dorsal); F, last thoracic segment and 1st urosomal segment (lateral left side); G, P5.
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 issued from : J.M. Bradford in N.Z. Jl Mar. Freshw. Res., 1970, 4 (4). [p.353, Figs 10-12]. As Chiridius gracilis. Male (off Kaikoura, New Zealand): 10, forehead (ventral view); 11, P5; 12, urosome (dorsal). Scale bars represent 0.1 mm.
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 Issued from: M.G. Mazzocchi, G. Zagami, A. Ianora, L. Guglielmo & J. Hure in Atlas of Marine Zooplankton Straits of Magellan. Copepods. L. Guglielmo & A. Ianora (Eds.), 1995. [p.144, Fig.3.24.1]. As Chiridius subgracilis. Female: A, habitus (dorsal); B, P2; C, exopod 3 of P2. Nota: Proportional lengths of urosomites and furca 39:23:17:8:13 = 100. Male: D, habitus (dorsal); E, P5; F, last two distal segments of left P5. Nota: Proportional lengths of urosomites and furca 18:26:22:20:2:12 = 100.
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 Issued from: M.G. Mazzocchi, G. Zagami, A. Ianora, L. Guglielmo & J. Hure in Atlas of Marine Zooplankton Straits of Magellan. Copepods. L. Guglielmo & A. Ianora (Eds.), 1995. [p.145, Fig.3.24.2]. As Chiridius subgracilis. Female (SEM preparation): A, habitus (dorsal); B, urosome (dorsal); C, urosome (ventral); D, P2 and genital somite (ventral); E, exopod 3 of P2. bars: A-D 0.100 mm; E 0.050 mm.
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 issued from : O. Tanaka in Publ. Seto Mar. Biol. Lab., 1957, VI (1). [p.54, Fig.33]. Male: a, habitus (dorsal); b, forehead (lateral); c, last thoracic segment (lateral); d, P1; e, P2; f, P5. Nota: Proportional lengths of urosomites and furca 17:25:23:19:3:13 = 100. A1 (23-segmented) reaches back to the middle of 3rd urosomal segment. Right A1 with segments 20 and 21 fused, 24 incompletely separate from the 25th, proximal segments furnished with well developed aesthetasks.
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 Chiridius molestus female: 1 - Exopod of Mx1 with 8 setae. Points of last thoracic segment reaching the midlength of the genital segment, usually longer. 2 - Exopodal segment 3 of P2 (often also P3) with bulge near the base of 3rd external spine and excavation near the base of 2nd external spine. Endopodal segment 2 of Md usually with 8 setae.
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 Chiridius molestus male: 1 - PPoints of last thoracic segment not longer than genital segment. 2 - Right P5 longer than left. Exopodal segments 1 and 2 of P1 with external spines reaching the midlength of the next segment or longer. 3 - Points of last thoracic segment hardly reaching the midlength of urosomal segment 1. Endopodal segment 1 of Mxp with 1 medial seta.
| | | | | Compl. Ref.: | | | Vives, 1982 (p.291); Suarez-Morales & Gasca, 1998 a (p.107); Lapernat, 2000 (tabl.3, 4); Razouls & al., 2000 (p.343, Appendix); Bradford-Grieve, 2003 (p.96, tab.1); Gaard & al., 2008 (p.59, Table 1, N Mid-Atlantic Ridge) | | | | NZ: | 7 | | |
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Distribution map of Chiridius molestus by geographical zones
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| | | | | | | | |  Chart of 1996 | |
 Issued from : J.M. Bradford & J.B. Jillett in New Zealand Ocean. Inst. Memoir, 86, 1980. [p.90-91, Fig.71].
Distribution of several species of Chiridius in the Tasman Sea and around New Zealand.
Nota: Chiridius subgracilis ( = Chiridius molestus). |
| | | | Loc: | | | off Mauritania, off Azores, G. of Mexico, Indian, ? Indonesia-Malaysia, Japan (Sagami), Tasman Sea, New Zealand, SE North Island, Straits of Magellan (Pacific and Central area), sub-Antarct. (Pacif. SE).
Type locality: Izu region (Japan) | | | | N: | 11 | | | | Lg.: | | | (35) F: 2,4-2,3; (36) F: 2,72-2,35; M: 2,16-2; (37) F: 2,7-2,3; M: 2,04-1,8; (39) M: 2,04; (113) M: 2,13-2,02; (197) F: 2,32-2,12; M: 1,98-1,8; (201) F: 2,45-2,1; M: 2,1-2; (231) M: 2,03; 2; (313) M: 2; 2,03; {F: 2,10-2,72; M: 1,80-2,16} | | | | Rem.: | Mesopelagic.
Sampling depth (sub-Antarct.) : 0-1000 m.
Found for the first time in the Indian Ocean by Markhaseva (1996, p.114) and in the south-eastern part off South America. | | | Last update : 01/01/2015 | |
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 Any use of this site for a publication will be mentioned with the following reference :
Razouls C., Desreumaux N., Kouwenberg J. and de Bovée F., 2005-2024. - Biodiversity of Marine Planktonic Copepods (morphology, geographical distribution and biological data). Sorbonne University, CNRS. Available at http://copepodes.obs-banyuls.fr/en [Accessed April 19, 2024] © copyright 2005-2024 Sorbonne University, CNRS
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