Bairdoppilata sp. 2

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 : 329

Bairdoppilata sp. 2 [of Maddocks 2015, Hawaii]

( Figure 16C )

2015 Bairdoppilata sp. 2 : Maddocks, p. 304, figs. 12A–L, 13A–J.

2018 Bairdoppilata sp. 2 , Maddocks.—Maddocks: figs. 3D,H; 4A, B; 7D–G; 8A–D, L; 13A–D; 14A–G; 15A–F; 16A–C.

Material Examined: Twelve specimens from Kanéohe Bay, O’ahu, the Hawaiian Islands ( Maddocks 2015, 2018).

Dimensions: Female 3969F, carapace L 0.892 mm, carapace H 0.566 mm.

Esophageal Valve: The plate is flat, wedge-shaped, with an incised but fairly narrow chevron groove ( Fig. 16C ). The posterior perimeter is scalloped with about eight gently curved teeth or low mounds, of equal sizes with no medial gap, which are set apart by a space from the multilobate corner teeth and one or more guide pins (or setules of the underlying ventral brush). Specimens from this species population were illustrated extensively by Maddocks (2018) to show the three-dimensional configuration of the esophageal apparatus and the molting process.

Figures

FIGURE 16. A, B, Bairdoppilata scaura Maddocks [Hawaii]: A, male specimen 3860M: esophageal plate. B, male specimen 3864M: left lateral view of mouth region, with upper and lower lips, atrium, esophagus, U–shaped strut of upper lip, ciliate hemispherical mound of lower lip, flagellate seta projecting into atrium, and setules of forehead and sternum. C, Bairdoppilata sp. 2 [of Maddocks 2015, Hawaii]: female specimen 3969F: esophageal valve with ring, collar, belt and plate. D, Bairdoppilata sp. 3 [of Maddocks 2015, Hawaii]: female specimen 3923F: esophageal valve with collar, plate, bracket, and basal ends of braces. E, Bairdoppilata sp. 4 [of Maddocks 2015, Hawaii]: female specimen 3963F: esophageal plate with bracket. F–I, Bairdoppilata sp. 2 [of Morais & Coimbra 2017, Brazil], female specimen 817F: F, A2 claws; G, esophageal plate and bracket; H, both braces; I, genital lobe. Scale bar = 50 µm.