Chiropsalmus zygonema Haeckel 1880

• Main Author: Gershwin, Lisa-Ann
• Format: Other/Unknown Material
• Language: unknown
• Published: Zenodo 2006
• Subjects: Biodiversity; Taxonomy; Animalia; Cnidaria; Cubozoa; Chirodropida; Chiropsalmidae; Chiropsalmus; Chiropsalmus zygonema; South Atlantic Ocean
• Online Access: https://doi.org/10.5281/zenodo.5067008; http://treatment.plazi.org/id/03DF8799FFCE4B38A93979A1FC71FA53

Chiropsalmus zygonema Haeckel, 1880 No figure ever published Chiropsalmus zygonema Haeckel, 1880: 641, n. sp. — Mayer, 1910: 517. — Thiel, 1928: 15–16; = juvenile C. quadrigatus . — Southcott, 1956: 277; probably immature. — Kramp, 1961: 310. — Gershwin, 2005: 124­125 and throughout; taxonomy and phylogeny. Type locality South Atlantic Ocean, off the coast of Argentina. Material examined No types or other material known. Diagnosis Body to about 60mm BH, 40mm BD; with two asymmetrical tentacles on each pedalium; finger­like gastric saccules rudimentary. Description (electronically translated from Haeckel, 1880, with as much of the original terminology as possible in order to minimize erroneous interpretation) Species­Diagnose: Umbrella four­sided­pyramidal, vaulted above, with inclusion of the hanging velarium 1 1/2 times as high as wide. Mouth­tube small, four­lipped, half so long as the roundish stomach­sack whose 4 interradial side­walls carry arched phacellae. The two gastric saccules about the umbral­wall of each radial­pocket, close to the entrance, oval, very small. Four pedalia page­form, two­edged, asymmetrically arranged, approximately 1/3 as long as the umbrella­height, each with 2 short jelly fingers. In total 8 long tentacles. Specielle description: Chiropsalmus zygonema is interesting as the simplest under the Chirodropidae until now examined, which directly joins this Subfamily with the Tamoyidae. In total, this type resembles more of a Tamoya than a Chiropsalmus , but must be put more to the last genus however, since each pedalium carries 2 tentacles. Indeed this condition also occurs as individual variation with the 4­tentacled Tamoya haplonema however (P. 443). Velarium and gonads is similarly like with C. quadrumanus (P. 447). Size: Umbrella­width 40 mm., umbrella­height 60 mm. Place of discovery: South Atlantic Ocean, at the Argentinian coast, Smith. Remarks Thiel (1928) came to a most curious conclusion about this species, believing it to be an immature Chiropsalmus quadrigatus , even though ...