Paragorgia tapachtli, JUAN ARMANDO SÁNCHEZ, 2005

JUAN ARMANDO SÁNCHEZ, 2005, Systematics of the bubblegum corals (Cnidaria: Octocorallia: Paragorgiidae) with description of new species from New Zealand and the Eastern Pacific, Zootaxa 1014, pp. 1-72: 51-52

publication ID

http://doi.org/ 10.5281/zenodo.169657

publication LSID

lsid:zoobank.org:pub:AC779A99-6987-4CF9-A8A6-4EB0FC89779C

DOI

http://doi.org/10.5281/zenodo.5668492

persistent identifier

http://treatment.plazi.org/id/755D87A2-A110-FFD1-FEB9-9FDF9101F8EF

treatment provided by

Plazi

scientific name

Paragorgia tapachtli
status

sp. nov.

Paragorgia tapachtli   sp. nov.

( Figs. 34–35 View FIGURE 34 View FIGURE 35 )

Material examined. Holotype: USNM 98786, 12° 44 ’ N – 102 ° 36 ’ W, 1950 m, (Seamount 6, Alvin DSR/V, P. Hickey), 29 October 1995, Mexico.

Diagnostic characters. Autozooid polyp tentacles with irregularly ornate spindles and rods, slightly different than in most Paragorgia   spp., less than 0.1 mm in length ( Fig. 35 View FIGURE 35 A– B). Cortex surface, including autozooid aperture, with unusually globular and hypermorphic radiate (mostly 6 ­radiate derived) sclerites up to 0.047 mm.

Description. Colony branching in one plane, slender branches, slightly curved, down to 2 mm in diameter ( Fig. 34 View FIGURE 34 ). Autozooid polyps distributed uniformly with a notably conical aperture ( Fig. 34 View FIGURE 34 ). Colony bright red. Medulla perforated by 1–2 main axial canals in the terminal branches. Autozooid polyp tentacles with irregularly ornate spindles rods, slightly different to most Paragorgia   spp., less than 0.1 mm in length ( Fig. 35 View FIGURE 35 A–B). Surface of the cortex, including autozooid apertures, with unusually globular and smooth radiate (mostly 6 ­radiate derived) sclerites up to 0.047 mm averaging 0.043 mm in length (± 0.003 SD, n= 10) ( Fig. 35 View FIGURE 35 C–F). Surface radiates about 1.63 times longer than wide, averaging 0.02 mm in width (± 0.001 SD, n= 10). Medulla with ornate spindles up to 0.3 mm in length ( Fig. 35 View FIGURE 35 G).

Morphological variation. Both diagnostic characters, autozooid tentacle and surface sclerites, exhibit a great deal of variation in P. tapachtli   sp. nov. The globular radiates of the surface present particular individualized forms but are always smooth with little radial ornamentation.

Distribution. Off Mexico, eastern Pacific Ocean, 1950 m.

Species comparisons. No other Paragorgia   species has such highly derived characters as P. tapachtli   , though they are similar in P. coralloides   but not as exaggeratedly globular and rounded.

Etymology. Tapachtli   is the word used for ‘coral’ in Nahuatl tongue, an indigenous language from Mexico, the country close to the place where this species was discovered.

USNM

Smithsonian Institution, National Museum of Natural History