WoRMS name details

Autolytus obliquatus Chamberlin, 1919

327061  (urn:lsid:marinespecies.org:taxname:327061)

nomen dubium (incerta sedis)
Species
marine, brackish, fresh, terrestrial
recent only
Chamberlin, Ralph V. 1919. The Annelida Polychaeta [Albatross Expeditions]. Memoirs of the Museum of Comparative Zoology at Harvard College, 48: 1-514., available online at http://www.biodiversitylibrary.org/ia/memoirsofmuseumo4801harv
page(s): 168-170, plate 19 fig. 8, plate 20 figs. 1-3 [details]   
Holotype  USNM 19336, geounit Gilbert Islands  
Holotype USNM 19336, geounit Gilbert Islands [details]
Note Pacific Ocean, Kiribati, northern Gilbert...  
From editor or global species database
Type locality Pacific Ocean, Kiribati, northern Gilbert Islands, off Apaiang (= Abaiang) (geocoordinates not provided, estimated with gazetteer to be approximately lat. 1.675º, long. 172.992º); surface, taken at night by electric light.  [details]
Type material Holotype of Autolytus obliquatus (USNM 19336) is a male stolon.  [details]
Depth range Surface, taken at night by electric light.   
Depth range Surface, taken at night by electric light.  [details]

Distribution Central Pacific Ocean: Kiribati, northern Gilbert Islands (off Abaiang). Only known from the type locality.   
Distribution Central Pacific Ocean: Kiribati, northern Gilbert Islands (off Abaiang). Only known from the type locality.  [details]

Etymology The specific epithet obliquatus is the Latin word for 'to bend to the side' or 'twisted aside', and seems to refer to the...  
Etymology The specific epithet obliquatus is the Latin word for 'to bend to the side' or 'twisted aside', and seems to refer to the palps of the species, stated by Chamberlin (1919: 170) to be "conspicuously geniculate near the base, the organs distad of the angle extending directly ectad and presenting a very characteristic appearance".  [details]

Taxonomy Nygren (2004: 112) revised the types of Autolytus obliquatus and A. torquens, considered to be male and female stolons of...  
Taxonomy Nygren (2004: 112) revised the types of Autolytus obliquatus and A. torquens, considered to be male and female stolons of the same species: "Both taxa have 6 chaetigers in region a, achaetous knobs, large distal tooth in compound chaetae, and a thin bayonet chaetae. The specimens were also collected at the same locality at the same occasion. Stolons with 6 chaetigers in region a, in combination with achaetous knobs are only found in Procerini, and the only described atokes with thin bayonet chaetae in this group are Proceraea anopla, and Imajimaea spp. None of the known Imajimaea species possess a large distal tooth in their compounds, but P. anopla does. Considering these characters, it is possible, that A. obliquatus closest relative is P. anopla. Mature stolons are unknown for P. anopla, but the colour pattern is very distinct in P. anopla, even in preserved specimens; possible synonymy is thus excluded. However, as the atoke is unknown in A. obliquatus, it is not at present certain to what genus it should be referred, it is here considered as Procerini incertae sedis.[details]
Read, G.; Fauchald, K. (Ed.) (2019). World Polychaeta database. Autolytus obliquatus Chamberlin, 1919. Accessed through: World Register of Marine Species at: http://www.marinespecies.org/aphia.php?p=taxdetails&id=327061 on 2019-12-13
Date
action
by
2008-03-17 10:44:16Z
created
2008-03-26 11:36:43Z
changed
2015-11-07 16:14:26Z
changed

Creative Commons License The webpage text is licensed under a Creative Commons Attribution 4.0 License


original description Chamberlin, Ralph V. 1919. The Annelida Polychaeta [Albatross Expeditions]. Memoirs of the Museum of Comparative Zoology at Harvard College, 48: 1-514., available online at http://www.biodiversitylibrary.org/ia/memoirsofmuseumo4801harv
page(s): 168-170, plate 19 fig. 8, plate 20 figs. 1-3 [details]   

original description  (of Autolytus torquens Chamberlin, 1919) Chamberlin, Ralph V. 1919. The Annelida Polychaeta [Albatross Expeditions]. Memoirs of the Museum of Comparative Zoology at Harvard College, 48: 1-514., available online at http://www.biodiversitylibrary.org/ia/memoirsofmuseumo4801harv
page(s): 172-174, plate 19 figs. 5-7 [details]   

redescription Nygren, Arne. (2004). Revision of Autolytinae (Syllidae: Polychaeta). <em>Zootaxa.</em> 680: 1-314., available online at http://www.mapress.com/zootaxa/2004f/z00680f.pdf
page(s): 110-112, fig. 52A-F [details]  Available for editors  PDF available [request] 
 
 Present  Inaccurate  Introduced: alien  Containing type locality 
 

Holotype USNM 19336, geounit Gilbert Islands [details]
From editor or global species database
Depth range Surface, taken at night by electric light.  [details]

Distribution Central Pacific Ocean: Kiribati, northern Gilbert Islands (off Abaiang). Only known from the type locality.  [details]

Etymology The specific epithet obliquatus is the Latin word for 'to bend to the side' or 'twisted aside', and seems to refer to the palps of the species, stated by Chamberlin (1919: 170) to be "conspicuously geniculate near the base, the organs distad of the angle extending directly ectad and presenting a very characteristic appearance".  [details]

Habitat The only known specimens were collected at the surface, at night by electric night. All the specimens were reproductive stolons, and the atokous form and its habitat is not known.  [details]

Taxonomy Nygren (2004: 112) revised the types of Autolytus obliquatus and A. torquens, considered to be male and female stolons of the same species: "Both taxa have 6 chaetigers in region a, achaetous knobs, large distal tooth in compound chaetae, and a thin bayonet chaetae. The specimens were also collected at the same locality at the same occasion. Stolons with 6 chaetigers in region a, in combination with achaetous knobs are only found in Procerini, and the only described atokes with thin bayonet chaetae in this group are Proceraea anopla, and Imajimaea spp. None of the known Imajimaea species possess a large distal tooth in their compounds, but P. anopla does. Considering these characters, it is possible, that A. obliquatus closest relative is P. anopla. Mature stolons are unknown for P. anopla, but the colour pattern is very distinct in P. anopla, even in preserved specimens; possible synonymy is thus excluded. However, as the atoke is unknown in A. obliquatus, it is not at present certain to what genus it should be referred, it is here considered as Procerini incertae sedis.[details]

Type locality Pacific Ocean, Kiribati, northern Gilbert Islands, off Apaiang (= Abaiang) (geocoordinates not provided, estimated with gazetteer to be approximately lat. 1.675º, long. 172.992º); surface, taken at night by electric light.  [details]

Type material Holotype of Autolytus obliquatus (USNM 19336) is a male stolon.  [details]