Notaulax californica (Treadwell, 1906)

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

Notaulax californica (Treadwell, 1906)

Potamilla californica Treadwell 1906: 1178.

Hypsicomus sp.- Hartman 1942: 133.

Hypsicomus californicus .- Hartman 1956: 258, 262, 270; Hartman 1969: 701-702.

Notaulax californica .- Perkins 1984: 342-343, fig. 31.

Materials

Type status: Other material. Occurrence: catalogNumber: LEMA-PO165 ; recordedBy: Beatriz Yáñez-Rivera; individualCount: 2; Taxon: phylum: Annelida; class: Polychaeta; order: Sabellida; family: Sabellidae; genus: Notaulax; Location: higherGeographyID: Pacific Ocean; higherGeography: Tropical Eastern Pacific; continent: America; islandGroup: Islas de Chamela; island: Isla Pajarera; country: México; countryCode: MX; stateProvince: Jalisco; municipality: La Huerta; maximumDepthInMeters: 7; verbatimLatitude: 19°33 ’22’’ N; verbatimLongitude: 105°06 ’50’’ W; Identification: identifiedBy: María Ana Tovar-Hernández; Event: samplingProtocol: Scuba dive; eventDate: June 26, 2013; year: 2013; month: 6; day: 26; habitat: On rock-coral; fieldNumber: Site 21; 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-PO166 ; recordedBy: Beatriz Yáñez-Rivera; Taxon: phylum: Annelida; class: Polychaeta; order: Sabellida; family: Sabellidae; genus: Notaulax; 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; minimumDepthInMeters: 3; maximumDepthInMeters: 4; verbatimLatitude: 19°32 ’57’’ N; verbatimLongitude: 105°06 ’20’’ W; Identification: identifiedBy: María Ana Tovar-Hernández; Event: samplingProtocol: Scuba dive; eventDate: June 27, 2013; year: 2013; month: 6; day: 27; habitat: On rock; fieldNotes: Site 16; Record Level: language: Spanish; institutionID: Universidad de Guadalajara; collectionID: Colección Biológica del Laboratorio de Ecosistemas Marinos y Acuicultura; institutionCode: UDG; collectionCode: LEMA

Description

Solitary fan worm associated with dead coral and rocks. Body length 11-14 mm, width 0.9-1.1 mm. Radiolar crown length 3-3.4 mm with 8-10 pairs of radioles. Thorax with eight chaetigers and abdomen with 60-67 chaetigers. Radioles with short bands of radiolar ocelli (Fig. 12 A-B), each band as long as the space of 4-6 pinnules, ocelli distributed in single rows of 12 to 16 ocelli, bands located at three quarters of the radiolar crown length (Fig. 12 C). Ventral margin of collar incised, forming rounded lappets. Base of radiolar crown (basal lamina or radiolar lobes) short, as long as the length of the first three segments in lateral view.

Taxon discussion

This is the first formal record in Mexico.

Figures

Figure 12. Notaulax californica (Treadwell, 1906) and Parasabella pallida Moore, 1923. Notaulax californica: A) crown and thorax, dorsal view, B) same, ventral view, C) radiolar ocelli. Parasabella pallida: D) crown, thorax and anterior abdomen, E-F) radiolar maculae. Scale bars: A-B, D) 2 mm, C, E-F) 0.3 mm.