Fauveliopsis brevipodus Hartman, 1971

Salazar-Vallejo, Sergio I., Zhadan, Anna E. & Rizzo, Alexandra E., 2019, Revision of Fauveliopsidae Hartman, 1971 (Annelida, Sedentaria), Zootaxa 4637 (1), pp. 1-67 : 13

Fauveliopsis brevipodus Hartman, 1971

Figure 4

Fauveliopsis brevis Hartman, 1967:123–124 , Pl. 37, Fig. A, B; Levenstein 1970: 228.

Fauveliopsis brevipodus Hartman, 1971: 1422 (replacement name for F. brevis Hartman, 1967 , junior homonym of F. brevis ( Hartman, 1965) , newly combined by Hartman & Fauchald 1971: 115).

TL: S off Isla de los Estados, Drake Passage, 380– 490 m. D: Southern Chile to Drake Passage, 384–3537 m .

Type material: Southwestern Atlantic Ocean, Argentina. Holotype ( USNM 55546 ), and four paratypes ( USNM 55547 ), in rhabdamminid-like foraminiferans, S off Isla de los Estados, Drake Passage, Cape Horn, R / V Eltanin, Sta. 740 (56°06’ S, 66°19’ W to 56°07’ S, 66°30’ W), 384–494 m, 18 Sep. 1963 (paratypes 2.7–3.9 mm long, 0.4–0.6 mm wide, 27–29 chaetigers; GP not seen).

Additional material. Antarctic Ocean. One specimen ( LACM 7501), pharynx everted, off S Falkland or Malvinas Islands, R/V Eltanin, Sta. 350 (55°03’ S, 58°57’ W to 55°00’ S, 58°51’ W), 2452 m, 4 Dec. 1962 (4.1 mm long, 0.4 mm wide, 27 chaetigers; GP or oocytes not seen).

Diagnosis. Fauveliopsis with 28 chaetigers ( Fig. 4A, D, E ). Anterior, median and posterior chaetigers with an acicular and a capillary per rami ( Fig. 4B, C ). Interramal papillae globular, sessile, slightly longer than wide. Pygidium with a pair of large lateral papillae ( Fig. 4C ). GP not seen.

Remarks. Fauveliopsis brevipodus resembles Fauveliopsis sp. A of Wolf (1984) because both have the body surface papillated, and genital papillae are not visible. They differ especially regarding pygidial features; in F. brevipodus the pygidium is almost smooth, with two papillae, whereas in F. sp. A the pygidium has many short papillae.

The original illustration ( Hartman 1967: Plate 37, Fig. A) shows that the body is tapered towards the “posterior” region and the papillae are illustrated as being about as long as the “anterior” aciculars; however, the body polarity was reverted, and no trace of the gut was illustrated. Although it was not indicated in the original description, the body is shown as papillated in Plate 37a. After the proposal of Laubieriopsis Petersen, 2000 and the transfer of Fauveliopsis brevis Hartman, 1965 to it, there would be no homonym problem if this species remained in Fauveliopsis ; however, the replaced name is herein retained instead of reversing the proposal by Hartman. The type specimens were found in unidentified rhabdamminid foraminiferans (see Gooday & Smart 2000).

Figures

FIGURE 4. Fauveliopsis brevipodus Hartman, 1971, n. comb., holotype (USNM 55546), A. Dorsal view. B. Anterior region, dorsal view. C. Posterior region, dorsal view. Paratypes (USNM 55547). D. Oblique dorsal view. E. Dorsal view. Scale bars: A: 260 µm, B: 100 µm, C: 90 µm, D, E: 0.4 mm.