Neonesidea plumulosa Maddocks, 2013

Maddocks, Rosalie F., 2021, Taxonomic applications of the esophageal flapper valve in the Genus Neonesidea (Bairdioidea, Podocopida, Ostracoda), including descriptions of new and poorly known species from the Caribbean and Gulf of Mexico, Zootaxa 4903 (4), pp. 451-492 : 482-483

Neonesidea plumulosa Maddocks, 2013

( Figure 13 G–I)

2013 Neonesidea plumulosa sp nov, Maddocks: 483, Figs. 5 E–F, 18–23.

Material: One adult male (3960M).

Dimensions: Male specimen 3960M, LVL 1.008 mm, LVH 0.563 mm. See also Maddocks (2013, Fig. 16 ).

Supplemental Description: The plate is wedge-shaped with nearly straight, rapidly converging lateral edges; the posterior margin carries an irregular row of six conical to triangular teeth of decreasing sizes on either side of a narrow medial gap. The broad lateral gap lacks any teeth. The corner teeth are simple (not multilobate) with rounded conical terminations. A stiff setule (guide pin of Maddocks 2018) is visible beyond each posterolateral corner. The ventral bracket is parallel-sided with divergent posterodistal horns and a row of tubercles along the anterior edge.

Remarks: The plate resembles that of N. tenera in general arrangement, but the teeth are longer, more conical, and less symmetrical.

Distribution: French Frigate Shoals, the Hawaiian Islands.

Figures

FIGURE 5. A–U, Neonesidea dinochelata (Kornicker). A, C, specimen 4071RV; B, D, specimen 4070LV; E–F, specimen 4047W; G–H, specimen 4048RV; I, J, specimen 4068RV; J, L, specimen 4067LV; all from the Bahamas. M, specimen 4949RV; N–O, specimen 4050LV; both from Belize. P–T, specimen 4065W from Grand Cayman Island. U, specimen 4069RV from Florida Keys. V–Z, Neonesidea sp. aff. N. dinochelata (Kornicker). V, specimen 4052RV from Belize; W–Z, specimen 4072W from Guantanamo Bay, Cuba. A, E, G, I, M, P, U–V, W, all RV exteriors in TL; B, F, J, N, Q, X, all LV exteriors in TL; C, H, K, R, Y, all AMS of RV; D, L, O, S, Z, all AMS of LV; T, DV of RV and LV in TL. Scale bar = 50 µm.

FIGURE 13. A–F, Neonesidea manningi Maddocks; A, specimen 895M; B–C, specimen 903F; D–E, specimen 900M; F, specimen 906J; all from Ascension Island. G–I, Neonesidea plumulosa Maddocks, holotype specimen 3960M, from French Frigate Shoal, the Hawaiian Islands. J–M, Neonesidea tenera (Brady); J, specimen 3906M; K, specimen 3892F; L, specimen 3905F; M, specimen 3957J; all from French Frigate Shoal, the Hawaiian Islands. A–B, antennal claws; C–G, I, L, EV with ring, plate, bracket, braces, and details of posterior teeth of plate; H, right lateral view of carapace in RL; M, left lateral view of soft body within decalcified RV. Scale bar = 50 µm.

FIGURE 16. Neonesidea schulzi (Hartmann). A–G, specimen 013M; images scanned from contact paper print from over-exposed negative film of over-stained preparation, taken in 1967; magnifications were not recorded. H–I, specimen 767W; J–K, specimen 768F; L, specimen 3080F. A, lateral view of compressed head capsule with EV, showing forehead, atrium, labrum, esophagus, chitinous struts, and EV with ring, plate, and braces; B, A2 claw; C, lateral view of both hemipenes, folded; D–E, DV of both hemipenes and zygum; F–G, EV and plate; H–K, RV and LV exteriors in TL; L, posterior spine of LV and fan-shaped plumose sensilla, by SEM. Scale bar = 50 µm.