Chone mollis (Bush, 1904)

Yanez-Rivera, Beatriz, Tovar-Hernandez, Maria Ana, Galvan-Villa, Cristian Moises & Rios-Jara, Eduardo, 2020, Tubicolous polychaete worms (Annelida) from Bahia de Chamela Islands Sanctuary, Mexico, with the description of a new bamboo worm, Biodiversity Data Journal 8, pp. 57572-57572 : 57572

Chone mollis (Bush, 1904)

Metachone mollis in Bush 1904: 216, pt. 35, figs. 19-20, 28.

Chone mollis .- Hartman 1942: 87, figs. 141-143; Hartman 1944b: 279; Hartman 1969: 673; Banse 1972: 469, fig. 3.- Tovar-Hernández 2007: 539-543, figs. 10, 19B.

Materials

Type status: Other material. Occurrence: catalogNumber: LEMA-PO163 ; recordedBy: Beatriz Yáñez-Rivera; individualCount: 2; Taxon: phylum: Annelida; class: Polychaeta; order: Sabellida; family: Sabellidae; genus: Chone; Location: higherGeographyID: Pacific Ocean; higherGeography: Tropical Eastern Pacific; continent: America; islandGroup: Islas de Chamela; island: Isla Cocinas; country: México; countryCode: MX; stateProvince: Jalisco; municipality: La Huerta; maximumDepthInMeters: 8; verbatimLatitude: 19°33 ’06’’ N; verbatimLongitude: 105°06 ’43’’ W; Identification: identifiedBy: María Ana Tovar-Hernández; Event: samplingProtocol: Dredge; eventDate: June 27, 2013; year: 2013; month: 6; day: 27; habitat: Sand-rubble; fieldNumber: Site 3; Record Level: language: Spanish; institutionID: Universidad de Guadalajara; collectionID: Colección Biológica del Laboratorio de Ecosistemas Marinos y Acuicultura; institutionCode: UDG; collectionCode: LEMA Type status: Other material. Occurrence: catalogNumber: LEMA-PO164 ; recordedBy: Beatriz Yáñez-Rivera; individualCount: 1; Taxon: phylum: Annelida; class: Polychaeta; order: Sabellida; family: Sabellidae; genus: Chone; Location: higherGeographyID: Pacific Ocean; higherGeography: Tropical Eastern Pacific; continent: America; islandGroup: Islas de Chamela; island: Isla La Colorada; country: México; countryCode: MX; stateProvince: Jalisco; municipality: La Huerta; maximumDepthInMeters: 6; verbatimLatitude: 19°32 ’23’’ N; verbatimLongitude: 105°05 ’31’’ W; Identification: identifiedBy: María Ana Tovar-Hernández; Event: samplingProtocol: Dredge; eventDate: June 26, 2013; year: 2013; month: 6; day: 26; habitat: Sand-rubble; fieldNumber: Site 17; Record Level: language: Spanish; institutionID: Universidad de Guadalajara; collectionID: Colección Biológica del Laboratorio de Ecosistemas Marinos y Acuicultura; institutionCode: UDG; collectionCode: LEMA

Description

Body 15 mm long, 1.4 mm wide, radiolar crown 3.2 mm long with 12 pairs of radioles, thorax with eight chaetigers and abdomen with 30 chaetigers. Solitary fan worm from soft bottoms. Branchial crown cone-shaped when it is open. Radioles united by a long palmate membrane that occupies 3/4 of their length (Fig. 11 A, C). Radioles with broad flanges (Fig. 11 C). Ventral shield of collar half-circle shaped. Anterior peristomial ring lobe triangular, exposed partially above the collar margin (Fig. 11 D). Glandular ridge of chaetiger 2 narrow all around, it is whitish in unstained worms or stained with methyl green (Fig. 11 A-B).

Taxon discussion

One specimen was found regenerating a radiolar crown. This species has been reported in the Pacific coast of Panama and some localities from Mexican Pacific ( Tovar-Hernández 2007).

Figures

Figure 11. Chone mollis (Bush in Moore, 1904). A-B) Radiolar crown and first thoracic chaetigers, C) palmate membrane and radiolar flanges, D) collar and anterior peristomial ring lobe. A) Stained with methyl green, C-D) stained with Shirla-Stain A. Scale bars: A-B) 3.5 mm, C) 0.5 mm, D) 1 mm.