New additions to the shallow-water hydroids (Cnidaria: Hydrozoa) of the French Lesser Antilles: Martinique
Author
Galea, Horia R.
text
Zootaxa
2013
3686
1
1
50
journal article
37008
10.11646/zootaxa.3686.1.1
b5a2eb3f-2555-41ba-a303-9fac9d2618c3
1175-5326
284148
17A93C58-F09C-484A-A26A-F4F27BC91A6C
Heterocoryne caribbensis
Welder &
Larson, 1986
(Pl. 1G–I; Fig. 2M)
Heterocoryne caribbensis
Wedler & Larson, 1986
: 75
, fig. 2.―
Petersen, 1990
: 132
.
Material examined
.
Stn. 2
,
22.ii.2012
, 3–
13 m
,
M243
: a fertile colony on sponge (MHNG-INVE-82911).
Remarks
. After its description by
Wedler & Larson (1986)
,
Petersen (1990)
discussed the relationship between
Sphaerocoryne
Pictet, 1893
and
Heterocoryne
Wedler & Larson, 1986
, indicating that the trophosome of the latter is solely distinguished from the former through its trifid arrangement of the tentacles (Pl.
1I
). The cnidome of the polyp (not previously reported) is composed of: 1) small [(10.3–11.0)×(6.5–6.8) µm] and large [(17.8–18.7)×(12.6–13.5) µm] stenoteles; 2) desmonemes, (8.2–8.4)×(4.4–4.9) µm. No nematocysts could be found in the medusoid.
Geographical distribution
.
Puerto Rico
(
Wedler & Larson 1986
),
Guadeloupe
(Galea, unpublished results),
Martinique
(present study).