Fauveliopsis magna Fauchald & Hancock, 1981

Salazar-Vallejo, Sergio I., Zhadan, Anna E. & Rizzo, Alexandra E., 2019, Revision of Fauveliopsidae Hartman, 1971 (Annelida, Sedentaria), Zootaxa 4637 (1), pp. 1-67 : 29-30

publication ID

https://doi.org/ 10.11646/zootaxa.4637.1.1

publication LSID

lsid:zoobank.org:pub:5A43797A-FDDA-4AD4-928E-C407D659B8F0

DOI

https://doi.org/10.5281/zenodo.5927972

persistent identifier

https://treatment.plazi.org/id/815D710F-FF95-FFC7-A5A6-363DFBFCF855

treatment provided by

Plazi

scientific name

Fauveliopsis magna Fauchald & Hancock, 1981
status

 

Fauveliopsis magna Fauchald & Hancock, 1981 View in CoL

Figure 15 View FIGURE 15

Fauveliopsis magna Fauchald & Hancock, 1981: 38 View in CoL ; Blake & Petersen, 2000: 41–43, Fig. 3.5 (redescr.).

Fauveliopsis glabra: Fauchald & Hancock 1981: 38 View in CoL (partim).

TL: Off central Oregon, 2800 m dept. D: Restricted to type locality.

Type material: Northeastern Pacific, Oregon. Holotype ( LACM 1149 About LACM ), Cascadia Abyssal Plain, Sta. AD 9, NAD21 (44°36.4’ N, 125°24.8’ W), 2800 m, 13 Aug. 1962, A.D. Carey, coll. (body pierced to be illustrated in dorsal view, this explains the dorsal depression, body wall broken along a few chaetigers in the posterior region; 8 mm long, 1 m wide, 41 chaetigers, GP on posterior part of chaetiger 12). GoogleMaps

Additional material. Northeastern Pacific, Oregon. One specimen ( LACM 7595 About LACM ), without anterior end, Cascadia Abyssal Plain, Sta. AD 110, NAD 21(44°40.1’ N, 125°34.0’ W to 44°40.0’ N, 125°35.0’ W), 2798 m, 11 Aug. 1964 GoogleMaps .

Diagnosis. Fauveliopsis with 41 chaetigers. Integument with fine papillae giving a velvety appearance. Interramal papillae oval. Median chaetigers with one acicular and one capillary per bundle. Last 11 chaetigers with more chaetae, up to three aciculars and up to three capillaries per bundle. Chaetal formula: 1A1c/1c1A (ant.), 1A1c/1c1A (med.), 3A2–3c/2–3c3A (post.). GP on posterior margin of chaetiger 12. In tubular, agglutinated foraminiferan tests ( Psammosiphonella ).

Remarks. As indicated above, Fauveliopsis magna is similar to F. adriatica because both have genital papillae (GP) on the right side, and a papillated body surface; their main differences involve the chaetiger where GP are present, and the number of chaetae along posterior chaetigers. Fauveliopsis magna has GP before chaetal lobe of chaetigers 13 or 14, and only 2–3 capillaries in posterior chaetigers, whereas in F. adriatica GP are present before chaetiger 11, and there are 3–8 capillaries in posterior chaetigers.

Blake & Petersen (2000) redescribed the species based upon the holotype. The holotype ( Fig. 15A View FIGURE 15 ) is complete, slightly damaged, blunt anteriorly, tapered posteriorly; some portions of the integument are lost ( Fig. 15B View FIGURE 15 ), or some parapodia have been previously removed ( Fig. 15C View FIGURE 15 ). Their additional material indicated above included specimens 5.0– 11.8 mm long, but the number of chaetigers varied little (37–39 chaetigers), whereas the GP was only present in one single chaetiger (12 or 13) ( Fig. 15B View FIGURE 15 , arrow). Fauveliopsis magna and F. glabra are similar but differ because of the relative position of the genital papillae, and especially the development of the posterior parapodia, being depressed in F. glabra , whereas in F. magna they are projected from the body wall.

Kingdom

Animalia

Phylum

Annelida

Class

Polychaeta

Order

Terebellida

Family

Fauveliopsidae

Genus

Fauveliopsis

Loc

Fauveliopsis magna Fauchald & Hancock, 1981

Salazar-Vallejo, Sergio I., Zhadan, Anna E. & Rizzo, Alexandra E. 2019
2019
Loc

Fauveliopsis magna

Fauchald, K. & Hancock, D. R. 1981: 38
1981
Loc

Fauveliopsis glabra: Fauchald & Hancock 1981: 38

Fauchald, K. & Hancock, D. R. 1981: 38
1981
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