Dantya sp. A

Kornicker, Louis S., Iliffe, Thomas M. & Harrison-Nelson, Elizabeth, 2007, Ostracoda (Myodocopa) from Anchialine Caves and Ocean Blue Holes, Zootaxa 1565 (1), pp. 1-151 : 134-136

Dantya sp. A

Figs. 76 , 77

Material. Great Bahama Bank, South Andros (Four Shark Blue Hole), Sta 99-050: USNM 1021489, 1 early instar.

Distribution. South Andros (Four Shark Blue Hole).

Description of early instar ( Figs. 76 , 77 ). Carapace elongate with ventral edge of rostrum forming rightangle with anterior margin of valve ventral to rostrum; projecting caudal process with flat tip; straight hinge line visible through valve (dashed in Fig. 77 a ).

Ornamentation ( Fig. 76 , 77 a,c ): Surface with scallop-like reticulations with digitate margins; numerous minute pustules present within reticulations; surface with indistinct horizontal ribs; posterior dorsal corner of valve with prominent node; valve surface and margins with single bristles.

Central adductor muscle attachments ( Figs. 76 , 77 a,b ): With about 30 small round attachments.

Carapace size (length, height in mm): USNM 1021489: 0.76, 0.43.

Mandible ( Fig. 77 d ): Not examined in detail, but in general similar to that of holotype of Dantya magnifica Kornicker & Cohen 1978 .

Furca ( Fig. 77 e ): Each lamella with 5 claws; claw 1 fused to lamella, other claws separated from lamella by suture. Claws decrease in length and width along lamella.

Remarks. This early instar was left intact. The valve of the early instar differs somewhat from the holotype of Dantya magnifica illustrated by Kornicker & Cohen (1978: Fig.1 ) in lacking nodes, and the fourth furcal claw is not broader than the third as it is in the holotype ( Kornicker & Cohen 1978: Fig. 4d ), but these differences could be attributed to the immaturity of the specimen. The carapace of Dantya heardi Kornicker 1986 , does not have the posterodorsal node present on Dantya sp. A , but it is possible that Dantya sp. A could be referred to D. heardi when adults are known. This is the first report of a member of the genus Dantya in the Bahamas.

Figures

FIGURE 1. Locations of inland anchialine and ocean blue holes in the Bahamas. Inland blue hole caves (open circles -

FIGURE 4. Locations of inland anchialine cenotes in the Yucatan Peninsula, Mexico. Cenotes open circles -) include: 1. Temple of Doom Cenote, 2. Cenote Aerolito. Map from Online Map Creation at: http://www.aquarius.ifm.geomar.de

FIGURE 76. Dantya sp. A, USNM 1021489, early instar, complete specimen from left side, length 0.76 mm.

FIGURE 77. Dantya sp. A, USNM 1021489, early instar: a, complete specimen from left side, showing lateral eye, length 0.76 mm, height, 0.43 mm; b, detail of central adductor muscle scars from “a”; c, detail of upper edge of left valve from “a”; d, anterior of shell showing projecting left mandible; e, left lamella of furca projecting from shell. Scale equals 0.10 mm (b–e).