Mitrocomella polydiademata ( Romanes, 1876 )

Peter Schuchert, 2017, Systematic notes on some leptomedusa species with a description of Neotima galeai n. spec. (Hydrozoa, Cnidaria), Revue suisse de Zoologie 124 (2), pp. 351-375 : 364-365

publication ID

https://doi.org/ 10.5281/zenodo.893549

persistent identifier

https://treatment.plazi.org/id/272687CA-CF52-E211-FCE6-FDE1FDAEFECE

treatment provided by

Plazi

scientific name

Mitrocomella polydiademata ( Romanes, 1876 )
status

 

Mitrocomella polydiademata ( Romanes, 1876) Fig. 13 View Fig. 13 A-D

Tiaropsis polydiademata Romanes, 1876a: 274 , nomen nudum.

Tiaropsis polydiademata Romanes, 1876b: 526 . ‒ Romanes,

1877: 194, pl. 15 fig. 3.

Mitrocomella polydiademata . ‒ Kramp, 1932: 346, text-figs 3, 5, 11, 18, 29, 30, 40, pl. 10 figs 3-4. – Russell, 1953: 257, figs 147-149. – Naumov, 1969: 326, fig. 193. – Edwards, 1973b: 601, figs 1-2, life cycle. – Arai & Brinckmann-Voss, 1980: 93, figs 51-52. – Pagès et al., 1992: 32. – Ramil & Vervoort, 1992: 38, fig. 6a-i. – Cornelius, 1995: 143, fig. 32.

? Cuspidella grandis Hincks, 1868: 210 , pl. 40, fig. 4.

Cuspidella polydiademata . ‒ Naumov, 1969: 327, fig. 194.

Mitrocomella fulva Browne, 1904: 17 , pl. 1 fig. 3, pl. 3 figs 1-2. ‒ Kramp, 1932: 344. – Kramp, 1961: 156. ‒ Edwards, 1973b: 601, synonym. – Pagès et al., 1992: 32.

Material examined: 1 specimen; Scotland, Firth of Lorn, Dunstaffnage Bay, 56.455°N 05.434°E, 0 m depth, temperature 8-10°C; collection date 11.05.2004; DNA 1133 View Materials ; 16S sequence KY363939 View Materials GoogleMaps , COI MF000501 View Materials ; archived document see Table 1. ‒> 2 specimens; Norway, Fanafjord , 60.24079°N 05.22941°W, 0 m depth; collection date 23.04.2015 GoogleMaps ; DNA isolate 1115; 16S sequence KY363949, COI MF000508, 18S KY363979; archived document see Table 1.

Diagnosis: Umbrella diameter 9-30 mm, mostly around 10-12 mm, umbrella usually hemispherical or slightly higher, apical jelly thickened, no gastric peduncle. Top of subumbrella sometimes rather flat. Velum width about 1/4 of bell radius. Manubrium short, small, cruciform cross-section, base not much larger than oral end, mouth simple, four perradial, slightly recurved lips. Radial canals 4, relatively thick close to manubrium. Gonads elongate in females, covering 2/3 of radial canals, separated from circular canal and manubrium, when fully developed pendant and usually in zig-zag (Fig. 13D). Marginal tentacles typically 28-36 (reportedly up to 64) when mature, with basal bulbs, some bulbs without tentacles, 5-9 cirri between adjacent tentacles, coiling spirally. 16 large statocysts, each with numerous concretions aligned in two curved rows. When irritated, the medusa emits a greenish light.

Polyp stage tiny, of “ Cuspidella ” type, see Cornelius (1995).

Distribution: Northern boreal species, known from North Atlantic and NE Pacific. Type locality: Cromarty Frith, Scotland.

References: Russell (1953), Arai-Brinckmann-Voss, 1980, Cornelius (1995a).

COI

University of Coimbra Botany Department

Kingdom

Animalia

Phylum

Cnidaria

Class

Hydrozoa

Order

Leptothecata

Family

Mitrocomidae

Genus

Mitrocomella

Loc

Mitrocomella polydiademata ( Romanes, 1876 )

Peter Schuchert 2017
2017
Loc

Cuspidella polydiademata

Naumov D. V. 1969: 327
1969
Loc

Mitrocomella polydiademata

Cornelius P. F. S. 1995: 143
Pages F. & Gili J. M. & Bouillon J. 1992: 32
Ramil F. & Vervoort W. 1992: 38
Arai M. N. & Brinkmann-Voss A. 1980: 93
Edwards C. 1973: 601
Naumov D. V. 1969: 326
Russell F. S. 1953: 257
Kramp P. L. 1932: 346
1932
Loc

Mitrocomella fulva

Pages F. & Gili J. M. & Bouillon J. 1992: 32
Edwards C. 1973: 601
Kramp P. L. 1961: 156
Kramp P. L. 1932: 344
Browne E. T. 1904: 17
1904
Loc

Tiaropsis polydiademata

Romanes G. J. 1876: 274
1876
Loc

Tiaropsis polydiademata

Romanes G. J. 1876: 526
1876
Loc

Cuspidella grandis

Hincks T. 1868: 210
1868