Fauveliopsis armata 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 : 10-12

publication ID

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

publication LSID

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

persistent identifier

https://treatment.plazi.org/id/815D710F-FF80-FFD1-A5A6-3617FE45FD3B

treatment provided by

Plazi

scientific name

Fauveliopsis armata Fauchald & Hancock, 1981
status

 

Fauveliopsis armata Fauchald & Hancock, 1981 View in CoL

Figure 2 View FIGURE 2

Fauveliopsis armata Fauchald & Hancock, 1981: 37–38 View in CoL , Pl. 7, Fig. g–I; Blake & Petersen 2000: 39, Fig. 3 View FIGURE 3 , 4 View FIGURE 4 (redescr.). Fauveliopsis glabra: Fauchald & Hancock 1981: 38 View in CoL (partim, non Hartman in Hartman & Barnard, 1960).

Fauveliopsis rugosa Fauchald, 1972b: 220–222 View in CoL , Pl. 45, Figs. a–e (partim).

TL: Off central Oregon, 2000 m. D: Off central Oregon to Western Mexico, in 1537–2860 m .

Type material: Northeastern Pacific Ocean. Oregon. Holotype ( LACM 1160 About LACM ), and two paratypes ( LACM 1161 About LACM , with one specimen of F. glabra ), off Yaquina Bay , R / V Yaquina, Sta. AD 06, NAD17 (44°33.5’ N, 125°04.6’ W), 2000 m, anchor dredge, 6 Jun. 1963, A.G. Carey, coll. (holotype 3.5 mm long, 0.6 mm wide, 28 chaetigers, many aciculars broken; paratypes 2.7–2.8 mm long, 0.5–0.7 mm wide, 22 chaetigers; GP on posterior margin of right chaetiger 9 or 10; oocytes not seen; sigmoid aciculars in chaetigers 1–3, and from chaetiger 16 or 17 to last chaetiger). GoogleMaps

Additional material. Northeastern Pacific Ocean, Oregon. 11 specimens ( LACM 7597 About LACM ), Cascadia Abyssal Plain, Sta. AD 7, NAD 16 (44°38.8’ N, 125°12.1’ W), 1800 m, 13 Aug. 1962 (complete 2.3–6.5 mm long, 0.3–0.8 mm wide, 22–27 chaetigers; GP single, on right posterior margin of chaetiger 9 or 10) GoogleMaps . Four specimens ( LACM 7594 About LACM ), juveniles, one regenerating its anterior end, Cascadia Abyssal Plain, R / V Yaquina, Sta. AD 74, NAD 14 (no coordinates), 1400 m, 20 Feb. 1964 (complete 3.2–3.6 mm long, 0.5–0.6 mm wide, 25 chaetigers) . One specimen ( LACM 7596 About LACM ), Cascadia Abyssal Plain, Sta. AD 89, NAD 22A (44°38.5’ N, 126°16.1’ W to 44°38.5’ N, 126°16.4’ W), 2860 m, 20 May 1964 (3.5 mm long, 0.7 mm wide, 27 chaetigers; GP single, on right posterior margin of chaetiger 11; oocytes not seen). Eastern Pacific Ocean , Mexico GoogleMaps . Three specimens ( LACM 7598 About LACM ), juveniles, two complete, and a posterior end of cirratulid, off Isla San Juanito, R / V Velero IV, Sta. 13768 (21°53.0’ N, 106°49.0’ W), 1537 m, mud, Campbell grab, 20 Jan. 1970 (complete 2.0– 2.3 mm long, 0.3–0.4 mm wide, 22 chaetigers; GP or oocytes not seen) GoogleMaps . One specimen (LACM 7591), without posterior end, off Cabo Falso, B.C., R/V Velero IV, Sta. 13775 (22°34’00” N, 109°35’45” W), 2654 m, mud, Campbell grab, 22 Jan. 1970.

Diagnosis. Fauveliopsis with 22–28 chaetigers ( Fig. 2A, B View FIGURE 2 ). Parapodia with one acicular and one capillary per bundle in the three body regions ( Fig. 2C View FIGURE 2 ). Noto- and neuropodial aciculars of similar thickness; posterior chaetigers with sigmoid aciculars ( Fig. 2D View FIGURE 2 ). Interramal papillae pyriform. Aciculars in both body ends curved, sigmoid [after the original description; Blake & Petersen (2000) found straight aciculars in anterior chaetigers in the holotype]. GP single on posterior part of chaetiger 11 in holotype (on chaetiger 9 or 10 in smaller paratypes).

Remarks. Fauveliopsis armata resembles F. challengeriae because they have genital papillae (GP) on the right side, and papillated body surface. They differ because of the chaetigers where GP are present, and in the presence of sigmoid aciculars in posterior chaetigers. In F. armata, GP are present in chaetigers 9 to 11, and its posterior chaetigers have sigmoid aciculars, whereas in F. challengeriae GP are present in chaetiger 11 to 12, and posterior chaetigers have falcate aciculars.

Fauchald & Hancock (1981:37) included a key to the Oregon species based upon the number of chaetigers. Ju- veniles show sigmoid aciculars in posterior chaetigers, such that this feature can help separate juveniles belonging to the Northeastern Pacific species. Non-type specimens are yellowish to golden, with series of transverse papillae along chaetigers 1–5(6).

Kingdom

Animalia

Phylum

Annelida

Class

Polychaeta

Order

Terebellida

Family

Fauveliopsidae

Genus

Fauveliopsis

Loc

Fauveliopsis armata Fauchald & Hancock, 1981

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

Fauveliopsis armata

Fauchald & Hancock 1981: 37
1981
Loc

Fauveliopsis glabra

: Fauchald & Hancock 1981: 38
1981
Loc

Fauveliopsis rugosa

Fauchald 1972: 220
1972
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