WoRMS taxon details
Paraphyllina intermedia Maas, 1903
287164 (urn:lsid:marinespecies.org:taxname:287164)
accepted
Species
marine, brackish, fresh, terrestrial
recent only
Maas, O. (1903). Die scyphomedusen der Siboga-expedition. <em>Sigoga-Expeditie, 11: 1-91.</em> , available online at https://biodiversitylibrary.org/page/2050838
page(s): 8-10 [details]
page(s): 8-10 [details]
Holotype ZMA coel.2057
Holotype ZMA coel.2057 [details]
Collins, A.G.; Morandini, A.C. (2024). World List of Scyphozoa. Paraphyllina intermedia Maas, 1903. Accessed through: World Register of Marine Species at: https://www.marinespecies.org/aphia.php?p=taxdetails&id=287164 on 2024-04-24
Date
action
by
The webpage text is licensed under a Creative Commons Attribution 4.0 License
original description
Maas, O. (1903). Die scyphomedusen der Siboga-expedition. <em>Sigoga-Expeditie, 11: 1-91.</em> , available online at https://biodiversitylibrary.org/page/2050838
page(s): 8-10 [details]
basis of record F.S. Cornelius and J. van der Land (eds), updates 2000-2007, as a contribution to UNESCO-IOC Register of Marine Organisms (look up in IMIS) [details]
page(s): 8-10 [details]
basis of record F.S. Cornelius and J. van der Land (eds), updates 2000-2007, as a contribution to UNESCO-IOC Register of Marine Organisms (look up in IMIS) [details]
Present Present in aphia/obis/gbif/idigbio Inaccurate Introduced: alien Containing type locality
Holotype ZMA coel.2057 [details]
From regional or thematic species database
Translation I. Paraphyllina intermedia, new genus and species (Tables II, Fig. 10-14. Table XI, Fig. 106).Stat. 220. Vertical net of 200 m depth. 2 specimens of 8 mm umbrella height and 15 mm diameter.
The umbrella is flat and evenly curved without a crest; the ring groove is very pronounced and clearly sets apart the central, smooth part from the peripheral pedalia and lappet ring, similar to Periphylla. The pedalia are rectangular but arched in shape, separated by deep incisions that spread towards the lappets; the 12 tentacle pedalia are equally wide, while the 4 rhopalar pedalia are significantly narrower and have a protrusion that extends freely into the lappet incision before the actual sense bulb begins (see Fig. 11). The 16 marginal lappets are pointed-oval in shape and almost the same, with the 8 facing the rhopalia slightly narrower and longer than the others. A medial lappet clasp, located in the extension of the separating pedalial furrow, is visible in each lappet but does not reach the end. Thus, each lappet appears to be divided into two shallow notches along the curved umbrella rim, as is typical of most forms belonging to this group.
The central stomach is clearly visible due to the glassy jelly from the exumbrella with the 4 interradial filament rows and 4 perradial gaps through the reddish brown color of the endoderm (Fig. 11 fil.). The gastric tube is short compared to Periphylla and only extends into the subumbrella cavity until the start of the lappet zone. It has a distinctly square form; the 4 perradial edges are reinforced by jelly spikes that continue to be clearly visible as supports on the subumbrella (Fig. 10 per). The reddish brown color is limited only to the milder part of the interradial mouth tube surfaces; the side parts and the edge pillar are pure white, as are the perradial mouth corners, so the tube appears as a whole, brown and white striped lengthwise (Fig. 10 and 11). The peripheral endoderm is completely colorless: only the parts of the transparent jelly appear slightly darker due to preservation, but without their own pigment.
The canal system is consistent with the relationships described for ephyropsids in general and Nausithoe in particular. Four interradial anastomoses, corresponding to the attachment points of the filaments, are clearly visible, as are 16 gastric pockets. Separate canals enter each side of the lobes and merge distally.
The gonads have a form that is intermediate between those of Periphylla and Nausithoe or Palephyra. Each of the 8 sacs is slightly curved and bulging at the proximal end, so it does not remain in the simple egg- or shield-shape of Nausithoe (see below), but it is also not a long drawn out double horseshoe, as in Periphylla, but rather a bean-like shape roughly in the middle. Two such gonad beans run in with the flat-convex approaching each other in the interradius; here, the subumbrella is deeper centralwards to follow under the stomach wall, so that an indication of a funnel-like cavity or subgenital cavity arises (Fig. 10 inside). The subumbrella and its muscle tissue also show behavior close to Nausithoe as Periphylla. A fairly strong ring muscle lies in the outer region; inward, radial fibers are especially visible between two gonads; further outward from the ring muscle in each tentacle radius, strong radial fibers converge outward to the tentacle base and attach to the underside of the tentacle. The ring muscle appears divided into 16 radial fields, corresponding to the rhopalia and tentacles (not the lappets). This division, as well as the bulging protrusion into the subumbrella, is not produced by the muscle tissue, but by the strong layer of stinging and interstitial cells located above it. The muscle fibers also cross the boundaries of the fields (Fig. 10 and 12); however, the stinging layer stops with a sharp boundary line, creating 16 separate "subumbrella plates." Within each plate, individual radial lighter interruptions also appea [details]
