Bairdoppilata villosa ( Brady, 1880 )

Maddocks, Rosalie F., 2022, Taxonomic applications of the esophageal flapper valve in Bairdoppilata and Glyptobairdia (Bairdiidae, Ostracoda), with comments on anatomy, ontogeny, and geography, Zootaxa 5175 (3), pp. 301-342 : 328

Bairdoppilata villosa ( Brady, 1880)

1880 Bairdia villosa Brady , n. sp.: p. 50, pl. 3, figs. 3a–b; pl. 5, figs. 2a–g; pl. 8, figs. 4a–f.

1976 Bairdia villosa Brady. —Puri & Hulings, p. 266, pl. 2, figs. 1–4.

Not (?) 1969 Bairdoppilata (Bairdoppilata?) villosa (Brady) .—Maddocks, p. 75, figs. 40A–H, 41A–C.

Material Examined: None.

Anatomical Remarks: Brady’s drawing of the esophageal flapper valve of B. villosa was the first published illustration of this structure ( Brady 1880, pl. 3, fig. 3; Maddocks 2015, fig. 1A). It shows the general relationships of the ring with collar and belt, two thick, symmetrical braces ending in oval aprons, and a fan-shaped plate with concentric light and dark bands, but it does not show whether the posterior margin of the plate is dentate.

Taxonomic Remarks: The species is reliably identified only from the subfossil lectotype specimen at the type locality near Kerguelen Island. Brady’s description of soft anatomy should be verified from new material. All reports of this species from elsewhere should be re-examined. It is likely that they comprehend multiple species, as Brandão (2008) showed for B. simplex .

For example, the two adult males (specimen 371M, USNM 121344; specimen 194M, USNM 121345) described by Maddocks (1969) were collected from Eltanin station 1418 (54 o 32’S, 159 o 02’E, 113– 92 m), which is thousands of kilometers east of the type locality at Kerguelen Island. They represent a species of Bairdoppilata , but the identification as B. villosa requires re-examination.