Hincksella formosa ( Fewkes, 1881 ), Fewkes, 1881

Galea, Horia R., 2013, New additions to the shallow-water hydroids (Cnidaria: Hydrozoa) of the French Lesser Antilles: Martinique, Zootaxa 3686 (1), pp. 1-50: 25-26

publication ID

http://dx.doi.org/10.11646/zootaxa.3686.1.1

publication LSID

lsid:zoobank.org:pub:17A93C58-F09C-484A-A26A-F4F27BC91A6C

DOI

http://doi.org/10.5281/zenodo.5263641

persistent identifier

http://treatment.plazi.org/id/D6410C37-BF53-FFEC-FF36-F9CBFCDFFDE4

treatment provided by

Plazi

scientific name

Hincksella formosa ( Fewkes, 1881 )
status

 

Hincksella formosa ( Fewkes, 1881)  

( Fig. 6 View FIGURE 6. A, B U–Z)

Sertularella formosa Fewkes, 1881: 130   .― Nutting, 1895: figs 2, 2A; 1904: 104, pl. 27 figs 2–4.― Fraser, 1944: 260, pl. 55 fig. 246.― Vervoort, 1959: 264, figs 27 C, 29.

Sertularia integritheca Allman, 1888: 60   , pl. 29 figs 2, 2A.― Nutting, 1895: 88.― Versluys, 1899: 37. Sertularella hartlaubi Nutting, 1904: 104   , pl. 27 fig. 5.―Galea, 2009: 65, fig. 2 J–L. Hincksella formosa   ― Calder & Kirkendale, 2005: 484.

Material examined. Stn. 8, 25.i.2012, 12– 15 m, M052: numerous colonies and fragments 2.5–10 cm high, some with gonothecae (MHNG-INVE- 82890); 27.i.2012, 9– 15 m, M061: two fertile colonies 4.0 and 7.5 cm, respectively (MHNG-INVE- 82938). Stn. 14, 20.ii.2012, 10– 13 m, M 231: numerous erect stems, 2–12 cm high, some bearing gonothecae (MHNG-INVE- 82939).

Remarks. For a redescription of the trophosome, refer to Vervoort (1959). The gonotheca was described by Nutting (1904) and his account is generally accurate. However, the "four flapped membranous operculum" observed by him is not an anatomical structure, but rather the result of the distal perisarc sheet of the gonotheca ( Fig. 6 View FIGURE 6. A, B Y) rupturing, thus allowing the release of the gametes. The gonotheca is 2050–2195 µm long and 1035–1120 µm wide in middle, and is provided with 2–4 distal, blunt spines. One of its lateral sides is always concave ( Fig. 6 View FIGURE 6. A, B V, X), though not necessarily that adnate to the internode. Cnidome (not previously reported): 1) slender microbasic heteronemes, (6.9–7.4)×(2.6–2.9) µm; 2) slightly larger microbasic heteronemes, (7.7–8.2)× 3.5 µm; 3) huge macrobasic mastigophores, (26.6–29.8)×(6.9–7.7) µm.

Geographical distribution. Widely distributed in the tropical eastern and western Atlantic, but also occurring in the tropical eastern Pacific: Brazil ( Allman 1888, as Sertularia integritheca   ), Bahamas ( Nutting 1895, as S. integritheca   ), Cuba ( Nutting 1904), Peru ( Nutting 1904, as Sertularella hartlaubi   ), Ghana ( Vervoort 1959, as Sertularella formosa   ). In the Caribbean, it was reported from Grenada and Martinique ( Fewkes 1881), Testigos ( Versluys 1899, as S. integritheca   ), from an offshore locality between Jamaica and Haiti ( Nutting 1904, as S. hartlaubi   ), and from Panama ( Calder & Kirkendale 2005).

Kingdom

Animalia

Phylum

Cnidaria

Class

Hydrozoa

Order

Leptothecata

Family

Syntheciidae

Genus

Hincksella

Loc

Hincksella formosa ( Fewkes, 1881 )

Galea, Horia R. 2013
2013
Loc

Sertularia integritheca

Calder 2005: 484
Nutting 1904: 104
Versluys 1899: 37
Nutting 1895: 88
Allman 1888: 60
1888
Loc

Sertularella formosa

Vervoort 1959: 264
Fraser 1944: 260
Fewkes 1881: 130
1881