Species Card of Copepod
Calanoida ( Order )
    Epacteriscoidea ( Superfamily )
        Ridgewayiidae ( Family )
            Ridgewayia ( Genus )
Ridgewayia fosshageni  Humes & Smith, 1974   (F,M)
Syn.: Ridgewayia sp. (F) Fosshagen, 1970 b (p.34)
Ref.:
Humes & Smith, 1974 (p.126, 130, figs.F,M); Boxshall & Halsey, 2004 (p.179, fig.F); Figueroa & Hoefel, 2008 (p.145, Table 2, 3, Rem.);
Species Ridgewayia fosshageni - Plate 1 of morphological figuresissued from : A.G. Humes & W.L. Smith in Carib. J. Sci., 1974, 14 (3-4). [p.133, Figs.1-7].
Female (from Panama, Atlantic side): 1-2, habitus (dorsal and lateral, respectively; scale A); 3, epimeron of pediger 5 (lateral; scale C); 5, genital segment (ventral; scale B); 6, rostrum, labrum and paragnaths (ventral; scale C); 7, rostrum (lateral; scale B).
Scales: A = 0.5 mm; B = 0.1 mm; C = 0.1 mm.
Nota: Head and 1st pediger segment separted. All urosomal segments with denticles along the posterior border, except the anal segment. 2nd and 3rd urosomal segments dorsally with areas of minute spinules. A1 26-segmented.


Species Ridgewayia fosshageni - Plate 2 of morphological figuresissued from : A.G. Humes & W.L. Smith in Carib. J. Sci., 1974, 14 (3-4). [p.135, Figs.8-15].
Female: 8, A1 (segments 1-8; postero-inner; scale C); 9, A1 (segments 9-21 (postero-inner; scale C); 10, A1 (segments 22-26; postero-inner; scale C); 11, A2 (anterior; scale C); 12, Md (antero-outer; scale C); 13, Md (masticatory blade, anterior flat view; scale C); 14, Mx1 (posterior; scale B; 15, Mx2 (posterior; scale B).


Species Ridgewayia fosshageni - Plate 3 of morphological figuresissued from : A.G. Humes & W.L. Smith in Carib. J. Sci., 1974, 14 (3-4). [p.137, Figs.16-21].
Female: 16, Mxp (posterior; scale B); 17, junction between basis and endopod of Mxp ( anterior; scale D); 18, area between Mxp and P1 (ventral; scale C; 19, P1 and intercoxal plate (anterior; scale B); 20, P2 (anterior; scale B); 21, P3 (anterior; scale B);
Scale: D = 0.05 mm.


Species Ridgewayia fosshageni - Plate 4 of morphological figuresissued from : A.G. Humes & W.L. Smith in Carib. J. Sci., 1974, 14 (3-4). [p.139, Figs.22-31].
Female: 22, P4 (anterior; scale B); 23, P5 and intercoxal plate (anterior; scale B).

Male: 24, habitus (dorsal; scale A); 25, urosome (dorsal; scale B);26, A1 (segments 8-18; postero-inner; scale C); 27, A1 (segments 19-24; postero-inner; scale C); 28, P5 (posterior; scale C); 29, intercoxal plate and coxae of P5 (posterior; scale D); 30, right P5 (anterior; scale B); 31, left P5 (anterior; anterior; scale B).
Nota: Left A1 26-segmented; right A1 24-segmented, segments in the midregion slightly modified: segment 13 shortened and segment 14 lengthened on the outer side; segment 14 with a distal transverse row of spinules, segments 15-18 with 2 rows of finer spinules, and segment 19 with 1 row of very small fine spinules; segment 20 elongated, with its probable tripartite origin (segments 20, 21 and 22 of the female fused) indicated by the placment of the inner elements at three levels and by the 3 transverse rows of fine spinules. Geniculation located between segments 20 and 21. P5 with the intercoxal plate not clearly separated from the two small coxae and having 3 transverse rows of small spinules on its posterior surface


Species Ridgewayia fosshageni - Plate 5 of morphological figuresissued from : A.G. Humes & W.L. Smith in Carib. J. Sci., 1974, 14 (3-4). [p.131, Table 2].
Distinguishing features of R. fosshageni and R. shoemakeri.


Species Ridgewayia fosshageni - Plate 6 of morphological figuresissued from : A. Fosshagen in Sarsia, 1970, 44. [p.35, Fig.4]. As Ridgewayia sp.
Female (from Little San Salvador, Bahamas): A, habitus (dorsal); B, rostrum; C, A1; D, P1; E, P4; F, P5.


Species Ridgewayia fosshageni - Plate 7 of morphological figuresissued from : D.F. Figueroa & K.L. Hoefel in J. Crustacean Biol., 2008, 28 (1). [p.145, Table 3]. Characters male of R. fosshageni.


Species Ridgewayia fosshageni - Plate 8 of morphological figuresissued from : D.F. Figueroa & K.L. Hoefel in J. Crustacean Biol., 2008, 28 (1). [p.145, Table 2]. Characters female of R. fosshageni.


Species Ridgewayia fosshageni - Plate 9 of morphological figuresIssued from : V.N. Andronov in Russian Acad. Sci. P.P. Shirshov Inst. Oceanol. Atlantic Branch, Kaliningrad, 2014. [p.44, Fig.13, 1]. Ridgewayia fosshageni after Humes & Smith, 1974.
Female P1.

NZ: 1

Distribution map of Ridgewayia fosshageni by geographical zones
Loc:
W Atlant. (Bahamas, Panama: Fort Randolph)
N: 2
Lg.:
(512) F: 0,76-0,71; (515) F: 0,77-0,73; M: 0,70-0,66; {F: 0,71-0,77; M: 0,66-0,70}
Rem.: After Humes & Smith (1974): Aggregations around various actinarians (mainly Bartholomea annulata and Stoichactis helianthus).
See remarks to R. stygia.
Last update : 20/04/2016
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