World Register of Deep-Sea species

Deep-Sea source details

Name

Salazar-Vallejo, Sergio; Bailey Brock, Julie H.; Dreyer, Jennifer C. (2007). Revision of Pseudexogone Augener, 1922 (Annelida, Polychaeta, Syllidae), and its transfer to Pilargidae. Zoosystema. 29(3): 535-553.

SourceID

141913

Authors

Salazar-Vallejo, Sergio; Bailey Brock, Julie H.; Dreyer, Jennifer C.

Year

2007

Title

Revision of Pseudexogone Augener, 1922 (Annelida, Polychaeta, Syllidae), and its transfer to Pilargidae

Journal

Zoosystema

Suffix

29(3): 535-553

Type

Publication

Link

http://sciencepress.mnhn.fr/en/periodiques/zoosystema/29/3/revision-de-pseudexogone-augener-1922-annelida-polychaeta-syllidae-et-son-transfert-dans-les-pilargidae

Note

World Polychaeta Database (WPolyDb)

Abstract

Pseudexogone Augener, 1922, with P. backstromi Augener, 1922 as the type and only species, has been regarded as a member of the family Syllidae. It was questionably placed in the Syllidae in the description and apparently some morphological features were confused. The type material is lost. In this contribution: 1) Pseudexogone is redefined with the apparent autapomorphy of having curved, bidentate notospines; 2) Pseudexogone is transferred to the Pilargidae, closely allied to Synelmis Chamberlin, 1919; 3) those species described or identified as Synelmis dineti Katzmann, Laubier & Ramos, 1974 are regarded as members of Pseudexogone; and 4) additional species from several localities are described. Specimens were studied by using light and scanning electron microscopy. Besides the type species, four other species are distinguished by using the presence of eyes and type of furcated chaetae: P. dineti n. comb., from the Mediterranean and northeastern Atlantic Ocean; P. helmuti n. sp. from the southern Indian Ocean; P. imajimai n. sp., from the western Pacific Ocean; and P. williamsae n. sp., from the eastern Pacific Ocean. A key is included to identify all species in the genus.

Taxonomic term

Polychaeta

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Date

action

2013-01-12 18:30:12Z

created

db_admin

2016-05-12 05:28:13Z

changed

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Pseudexogone Augener, 1922 (status source)
Pseudexogone dineti (Katzmann, Laubier & Ramos, 1974) (new combination reference)
Pseudexogone helmuti Salazar-Vallejo, Bailey-Brock & Dreyer, 2007 (original description)
Pseudexogone williamsae Salazar-Vallejo, Bailey-Brock & Dreyer, 2007 (original description)
Synelmis dineti Katzmann, Laubier & Ramos, 1974 accepted as Pseudexogone dineti (Katzmann, Laubier & Ramos, 1974) (new combination reference)

Indian Ocean for Pseudexogone helmuti Salazar-Vallejo, Bailey-Brock & Dreyer, 2007

Nontype ECOSUR, geounit Bay of Biscay, identified as Pseudexogone dineti (Katzmann, Laubier & Ramos, 1974)
Nontype LACM, geounit Fieberling Tablemount, identified as Pseudexogone williamsae Salazar-Vallejo, Bailey-Brock & Dreyer, 2007
Nontype LACM, geounit Fieberling Tablemount, identified as Pseudexogone williamsae Salazar-Vallejo, Bailey-Brock & Dreyer, 2007
Nontype LACM, geounit Fieberling Tablemount, identified as Pseudexogone williamsae Salazar-Vallejo, Bailey-Brock & Dreyer, 2007
Nontype LACM, geounit Fieberling Tablemount, identified as Pseudexogone williamsae Salazar-Vallejo, Bailey-Brock & Dreyer, 2007
Nontype LACM, geounit Fieberling Tablemount, identified as Pseudexogone williamsae Salazar-Vallejo, Bailey-Brock & Dreyer, 2007
Nontype ECOSUR, geounit Fieberling Tablemount, identified as Pseudexogone williamsae Salazar-Vallejo, Bailey-Brock & Dreyer, 2007
Nontype LACM, geounit Fieberling Tablemount, identified as Pseudexogone williamsae Salazar-Vallejo, Bailey-Brock & Dreyer, 2007
Nontype LACM, geounit Fieberling Tablemount, identified as Pseudexogone williamsae Salazar-Vallejo, Bailey-Brock & Dreyer, 2007
Nontype LACM, geounit Fieberling Tablemount, identified as Pseudexogone williamsae Salazar-Vallejo, Bailey-Brock & Dreyer, 2007
Paratype MNHN, geounit Saint Paul Island, identified as Pseudexogone helmuti Salazar-Vallejo, Bailey-Brock & Dreyer, 2007
Paratype ECOSUR, geounit Saint Paul Island, identified as Pseudexogone helmuti Salazar-Vallejo, Bailey-Brock & Dreyer, 2007
Paratype ECOSUR, geounit Southern California, identified as Pseudexogone williamsae Salazar-Vallejo, Bailey-Brock & Dreyer, 2007
Nontype LACM, geounit Southern California, identified as Pseudexogone williamsae Salazar-Vallejo, Bailey-Brock & Dreyer, 2007
Nontype LACM, geounit Southern California, identified as Pseudexogone williamsae Salazar-Vallejo, Bailey-Brock & Dreyer, 2007
Holotype MNHN 1482, geounit Saint Paul Island, identified as Pseudexogone helmuti Salazar-Vallejo, Bailey-Brock & Dreyer, 2007
Paratype ECOSUR 23039, geounit Southern California, identified as Pseudexogone williamsae Salazar-Vallejo, Bailey-Brock & Dreyer, 2007
Nontype MNHN A488, As418, geounit Bay of Biscay, identified as Pseudexogone dineti (Katzmann, Laubier & Ramos, 1974)
Holotype LACM Poly 2184, geounit Southern California, identified as Pseudexogone williamsae Salazar-Vallejo, Bailey-Brock & Dreyer, 2007
Paratype LACM Poly 2185, geounit Southern California, identified as Pseudexogone williamsae Salazar-Vallejo, Bailey-Brock & Dreyer, 2007
Paratype LACM Poly 2186, geounit Southern California, identified as Pseudexogone williamsae Salazar-Vallejo, Bailey-Brock & Dreyer, 2007

Depth range

for Pseudexogone dineti (Katzmann, Laubier & Ramos, 1974)

120-650 m. [details]

Depth range

for Pseudexogone helmuti Salazar-Vallejo, Bailey-Brock & Dreyer, 2007

975 m. [details]

Depth range

for Pseudexogone imajimai Salazar-Vallejo, Bailey-Brock & Dreyer, 2007

43-50.3 m. [details]

Depth range

for Pseudexogone williamsae Salazar-Vallejo, Bailey-Brock & Dreyer, 2007

55-636 m. [details]

Diagnosis

for Pseudexogone Augener, 1922

Emended diagnosis by Salazar-Vallejo et al. (2007: 538): ''Synelminae with palps simple, each with a ventrolateral ... [details]

Distribution

for Pseudexogone backstromi Augener, 1922

Pacific Ocean: Juan Fernández Archipelago (off Chile); Oahu Island (Hawaii). [details]

Distribution

for Pseudexogone dineti (Katzmann, Laubier & Ramos, 1974)

NE Atlantic Ocean: from off Brest (Bay of Biscay) to the Adriatic Sea (Mediterranean Sea). [details]

Distribution

for Pseudexogone helmuti Salazar-Vallejo, Bailey-Brock & Dreyer, 2007

Southern Indian Ocean: off Saint Paul Island. Known only from the type locality. [details]

Distribution

for Pseudexogone imajimai Salazar-Vallejo, Bailey-Brock & Dreyer, 2007

Pacific Ocean, from Japan to Guam. [details]

Distribution

for Pseudexogone williamsae Salazar-Vallejo, Bailey-Brock & Dreyer, 2007

East Pacific Ocean: Southern California; Fieberling Tablemount (off California). [details]

Etymology

for Pseudexogone helmuti Salazar-Vallejo, Bailey-Brock & Dreyer, 2007

Named after Helmut Zibrowius, ''author or many important publications on serpulid polychaetes, and who participated ... [details]

Etymology

for Pseudexogone imajimai Salazar-Vallejo, Bailey-Brock & Dreyer, 2007

The species is named in homage to Dr. Minoru Imajima (National Museum of Nature and Science, Tokyo, Japan), ''in ... [details]

Etymology

for Pseudexogone williamsae Salazar-Vallejo, Bailey-Brock & Dreyer, 2007

The species is named after Susan Williams (University of Southern California, Los Angeles, USA) ''who has worked ... [details]

Habitat

for Pseudexogone backstromi Augener, 1922

Sublittoral rocky bottoms, on calcareous algae. [details]

Habitat

for Pseudexogone dineti (Katzmann, Laubier & Ramos, 1974)

Sandy sediments, from muddy sand to gravel, at shelf to bathyal depths. [details]

Habitat

for Pseudexogone helmuti Salazar-Vallejo, Bailey-Brock & Dreyer, 2007

Compacted fine sand, at bathyal depths. [details]

Habitat

for Pseudexogone imajimai Salazar-Vallejo, Bailey-Brock & Dreyer, 2007

Not stated, unknown. The species occurs at shallow sublittoral depths. [details]

Habitat

for Pseudexogone williamsae Salazar-Vallejo, Bailey-Brock & Dreyer, 2007

Sandy sediments, at shelf and slope depths. [details]

Holotype

for Pseudexogone dineti (Katzmann, Laubier & Ramos, 1974)

Holotype presumably lost (Salazar-Vallejo et al., 2007: 542). [details]

Taxonomy

for Pseudexogone Augener, 1922

Originally placed in Syllidae [details]

Type locality

for Pseudexogone backstromi Augener, 1922

Másatierra (= Robison Crusoe) Island, Juan Fernández Archipelago (Chile), Pacific Ocean (gazetteer estimate ... [details]

Type locality

for Pseudexogone helmuti Salazar-Vallejo, Bailey-Brock & Dreyer, 2007

Off Saint Paul Island, Southern Indian Ocean (38º47.67'S, 77º27.11'E), 975 m, in very compacted fine sand. [details]

Type locality

for Pseudexogone imajimai Salazar-Vallejo, Bailey-Brock & Dreyer, 2007

Off Tanegashima, Kyushu, Japan, NW Pacific Ocean (30.63º, 130.9033º), at 45 m. [details]

Type locality

for Pseudexogone williamsae Salazar-Vallejo, Bailey-Brock & Dreyer, 2007

Off Santa Rosa Island (6.1 miles, 13º T. to East Point), Southern California, Pacific Ocean (33º50.88'N, ... [details]

Type material

for Pseudexogone dineti (Katzmann, Laubier & Ramos, 1974)

Holotype (NHMW 13078) described as being a complete specimen with 29 segments and 8 mm long. Salazar-Vallejo et al. ... [details]

Type material

for Synelmis dineti Katzmann, Laubier & Ramos, 1974

Holotype (NHMW 13078) described as being a complete specimen with 29 segments and 8 mm long. Salazar-Vallejo et al. ... [details]