Paulayellus gustavi

Martins, Luciana & Tavares, Marcos, 2018, A new genus and species of Sclerodactylidae (Echinodermata: Holothuroidea: Sclerothyoninae) from the Pacific coast of Panama, and assignment of Neopentamera anexigua to Sclerothyoninae, Zootaxa 4429 (1), pp. 157-164: 161-163

publication ID

https://doi.org/10.11646/zootaxa.4429.1.8

publication LSID

lsid:zoobank.org:pub:A7B0734A-5F12-4724-9A9F-324BA1BE9BD4

persistent identifier

http://treatment.plazi.org/id/03B387C9-FF8C-D137-FF73-E19EFE70FCD0

treatment provided by

Plazi

scientific name

Paulayellus gustavi
status

gen. nov., sp. nov.

Paulayellus gustavi  gen. nov., sp. nov.

( Figs. 3–4View FIGURE 3View FIGURE 4)

Type material. Gulf of Panama, Panama (8. 2745-79.0771), 25–27 m, 9.iv.2004, holotype 50 mm ( FLMNHAbout FLMNH 4550). Permanent slides of body wall ossicles ( MZUSPAbout MZUSP 1619).

Comparative material examined. Apentamera lepra Deichmann, 1941  — Isla Partida, Gulf of California, Baja California, Mexico (28° 55’ N, 113° 5.6’ W), 45m, 8.iii.1936, holotype 28 mm ( LACM 329.4View Materials)GoogleMaps  . Isla Partida , Gulf of California, Baja California, Mexico, (28° 55’ N, 113° 5.6’ W), 82m, 8.iii.1936, paratypes 16 mm ( LACM 1936-71.2)GoogleMaps  .

Thandarum hernandezi Martinez & Brogger, 2012  — Argentine Sea, Mejillon II Expedition, (36°09’S; 55°53’W), 15m, 15.ix.2009, 30 mm ( MZUSP 1616View Materials).GoogleMaps 

Temparena chuni ( Ludwig & Heding, 1935)  —Valdivia, 2 spm 6–7 mm ( ZMUCAbout ZMUC HOL 323). Cape of Good Hope (3433'S 1821'E), 318 m: slides of the holotype (MNHN-IE-2005 6561; MNHN-IE-2005 6562) [all originally labeled Cucumaria chuni Ludwig & Heding, 1935  ].

Sclerothyone veligera ( Ludwig & Heding, 1935)  —Cape of Good Hope (3433'S 1821'E), 318 m. slides of the holotype (MNHN-IE-2005 6566; MNHN-IE-2005 6567; MNHN-IE-2005 6568) [all originally labeled as Cucumaria veligera Ludwig & Heding, 1935  ].

Neopentamera anexigua Deichmann, 1941  —Holotype (LACM E.1937-85.2). USNM E 21478 (for details see above under N. anexigua  )

Diagnosis. Body fusiform. Tube feet arranged in double rows restricted to ambulacral region. Ten tentacles, ventral-most pair smaller. Calcareous ring plates undivided and united only at base, with posterior processes entire. Body wall with knobbed buttons, plates and cups. Tentacles with rods. Introvert with plates. Tube feet with supporting rods, end plate small.

Etymology. This species is named in honor of Gustav Paulay in recognition for his contributions to the systematics of Echinoderms.

Description. Body U-shaped, slightly upturned at both ends ( Fig. 3A View Figure ), rough to touch. Color brown in ethanol. Anal papillae present ( Fig. 3B View Figure ). Tube feet arranged in double rows, restricted to ambulacra. Retractor muscles attached to radial plates, tapering distally ( Fig. 3C View Figure ). Plates of calcareous ring short, undivided, notched anteriorly; posterior processes undivided. Interradial plates tapering gently anteriorly, notched distally; base concave. Radial and interradial plates united at base only ( Fig. 3D View Figure ). Body wall ossicles comprising four-holed knobbed buttons (60–90 µm long, Fig. 4A–B View Figure ), perforated plates (180–250 µm long, Fig. 4C View Figure ), and cups knobbed in outline (45–60 µm long, Fig 4D–E View Figure ). Body wall and introvert with cups (70–80 µm long) and perforated plates (240–560 µm long, Fig 4F View Figure ). Tentacles rods curved, perforated (250–300 µm long, Fig. 4G View Figure ). Tube feet with perforated, curved rods (100–120 µm long, Fig. 4H View Figure ), knobbed plates (100 µm long), supporting rods irregular in outline and rudimentar spire (100–150 µm long, Fig. 4I View Figure ), end plates small (100-120 µm long).

Type locality. Gulf of Panama, Panama, 25–27 meters depth.

Remarks. Paulayellus gustavi  gen. nov., sp. nov. superficially resembles the Sclerodactylinae Apentamera lepra Deichmann, 1941  , with which it shares the presence of knobbed buttons, plates and cups in the body wall. However, while in P. gustavi  gen. nov., sp. nov. the radial and interradial plates of the calcareous ring are typically Sclerothyoninae  , i.e., the plates are united at base only, in A. lepra  the radial and interradial plates of the calcareous ring are united along their entire length, as in the remaining Sclerodactylinae genera. Paulayellus gustavi  gen. nov., sp. nov. can be further differentiated from A. lepra  in having tube feet provided with rods, whilst A. lepra  has tables instead of rods in the tube feet.

FLMNH

Florida Museum of Natural History

MZUSP

Museu de Zoologia da Universidade de Sao Paulo

ZMUC

Zoological Museum, University of Copenhagen

Kingdom

Animalia

Phylum

Echinodermata

Class

Holothuroidea

Order

Dendrochirotida

Family

Sclerodactylidae

Genus

Paulayellus

Loc

Paulayellus gustavi

Martins, Luciana & Tavares, Marcos 2018

2018
Loc

Paulayellus gustavi

Martins & Tavares 2018

2018
Loc

Thandarum hernandezi

Martinez & Brogger 2012

2012
Loc

Neopentamera anexigua

Deichmann 1941

1941
Loc

N. anexigua

Deichmann 1941

1941
Loc

Temparena chuni (

Ludwig & Heding 1935

1935
Loc

Cucumaria chuni

Ludwig & Heding 1935

1935
Loc

Sclerothyone veligera (

Ludwig & Heding 1935

1935
Loc

Cucumaria veligera

Ludwig & Heding 1935

1935