WoRMS name details

Checked: verified by a taxonomic editorSertularia pinastrum Ellis & Solander, 1786

595673  (urn:lsid:marinespecies.org:taxname:595673)

Unaccepted: synonym, or anything that is not accepted unaccepted (questionable synonym, emendation of orignal spelling)
Species
marine, brackish, fresh, terrestrial
recent only
Checked: verified by a taxonomic editorTaxonomy Name emendation for S. pinaster Ellis &...  
Checked: verified by a taxonomic editorTaxonomy Name emendation for S. pinaster Ellis & Solander, 1786 by Cuvier (1830).

There are two similar but clearly distinct and easily distinguishable Diphasia species in the NE Atlantic
Diphasia alata Hincks (1855) and
Diphasia margareta (Hassal, 1841).

The situation of Diphasia pinastrum (Cuvier, 1830) [= S. pinaster Ellis & Solander, 1786] is debatable.
Although Ellis & Solander (1786) depict hydrothecae with a sharp kink - typical for D. alata - two other details strongly argue in favour that Ellis and Solander had rather Diphasia margareta and not D. alata:
- the gonothecae are much too big for D. alata: the latter species as very small gonothecae (max 0.7 mm), not much larger than the hydrotheca. This is well illustrated in Hincks (1868: pl 48 fig. 2a) and has been checked for several other samples. The gonothecae of D. margareta are 2- 4 mm in length (comp. data in Cornelius 1979)
- the spacing of the hydrothecal pairs is too wide for D. alata: the latter species has a very tight spacing of the hydrothecal pairs, while they are much wider spaced in D. margareta.

Cornelius (1995b: 35) has concluded otherwise, but he was perhaps mislead by the schematic drawings of the hydrothecae in Ellis & Solander (1786).
For the sake of nomenclatural stability, it is thus best to continue the use as given in Cornelius (1995b) and use the names Diphasia alata Hincks (1855) and Diphasia margareta (Hassal, 1841), while Sertularia pinaster Ellis & Solander, 1786 should be regarded as a questionable synonym of Diphasia margareta. [details]
Schuchert, P. (2017). Sertularia pinastrum Ellis & Solander, 1786. In: Schuchert, P. (2017). World Hydrozoa database. Accessed through: World Register of Marine Species at http://www.marinespecies.org/aphia.php?p=taxdetails&id=595673 on 2017-12-16

Date
action
by
2012-02-16 13:24:12Z
created
2012-02-17 15:30:09Z
changed
2017-06-29 07:37:54Z
changed

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original description (unavailable nomenclaturally) Cuvier, G. 1830. Le règne animal distribué d'apres son organisation, pour servir de base a l'histoire naturelle des animaux et d'introduction a l'anatomie comparée. 2nd Edition. Volume 3 [includes Polychaeta]. 1-504. Déterville et Crochard. Paris., available online at http://www.biodiversitylibrary.org/item/17681
page(s): 301 [details]   
From editor or global species database
Checked: verified by a taxonomic editorTaxonomy Name emendation for S. pinaster Ellis & Solander, 1786 by Cuvier (1830).

There are two similar but clearly distinct and easily distinguishable Diphasia species in the NE Atlantic
Diphasia alata Hincks (1855) and
Diphasia margareta (Hassal, 1841).

The situation of Diphasia pinastrum (Cuvier, 1830) [= S. pinaster Ellis & Solander, 1786] is debatable.
Although Ellis & Solander (1786) depict hydrothecae with a sharp kink - typical for D. alata - two other details strongly argue in favour that Ellis and Solander had rather Diphasia margareta and not D. alata:
- the gonothecae are much too big for D. alata: the latter species as very small gonothecae (max 0.7 mm), not much larger than the hydrotheca. This is well illustrated in Hincks (1868: pl 48 fig. 2a) and has been checked for several other samples. The gonothecae of D. margareta are 2- 4 mm in length (comp. data in Cornelius 1979)
- the spacing of the hydrothecal pairs is too wide for D. alata: the latter species has a very tight spacing of the hydrothecal pairs, while they are much wider spaced in D. margareta.

Cornelius (1995b: 35) has concluded otherwise, but he was perhaps mislead by the schematic drawings of the hydrothecae in Ellis & Solander (1786).
For the sake of nomenclatural stability, it is thus best to continue the use as given in Cornelius (1995b) and use the names Diphasia alata Hincks (1855) and Diphasia margareta (Hassal, 1841), while Sertularia pinaster Ellis & Solander, 1786 should be regarded as a questionable synonym of Diphasia margareta. [details]