families

Silva-Morales, Itzahí & Gómez-Vásquez, Julio D., 2021, First records and two new species of sipunculans (Sipuncula) from the Southern Mexican Pacific, European Journal of Taxonomy 740 (1), pp. 77-117 : 103

publication ID

https://doi.org/ 10.5852/ejt.2021.740.1283

publication LSID

lsid:zoobank.org:pub:07F1B593-9F4F-4B32-88D9-ADC5CA0BEB84

DOI

https://doi.org/10.5281/zenodo.4644471

persistent identifier

https://treatment.plazi.org/id/03CA87A4-D36A-8038-78A0-4787FB2D614A

treatment provided by

Plazi

scientific name

families
status

 

Identification key to all families View in CoL from the Tropical Eastern Pacific (modified from Cutler 1994)

1. Tentacles encircling the mouth (peripheral tentacles); hooks, when present, are scattered......2

– Tentacles encircling the nuchal organ (nuchal tentacles), peripheral tentacles absent; hooks, if present, arranged in rings....................................................................................................................4

2. Longitudinal muscles of body wall in uniform continuous layer ................................... Golfingiidae View in CoL

– Longitudinal muscles of body wall gathered into separate or anastomosing bands.........................3

3. Longitudinal and circular musculature with anastomosis; spindle muscle attached to the posterior trunk ........................................................................................................................ Siphonosomatidae

– Longitudinal and circular musculature in continuous bands; spindle muscle not attached to the posterior trunk ................................................................................................................. Sipunculidae View in CoL

4. Hooks absent; contractile vessel with villi .......................................................................................... ............................................. Antillesomatidae ( Antillesoma mexicanum Silva-Morales et al., 2019 1)

– Hooks present; contractile vessel without villi...............................................................................5

5. Anal shield present ................................................................................................. Aspidosiphonidae View in CoL

– Anal shield absent ................................................................................................. Phascolosomatidae View in CoL

1 This species is separate from Antillesoma antillarum (Grube, 1859) because of differences in the length of the organisms and for the molecular divergences noted by Silva-Morales et al. (2019).

GBIF Dataset (for parent article) Darwin Core Archive (for parent article) View in SIBiLS Plain XML RDF