Danielopolina Kornicker & Sohn 1976

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 : 25

Danielopolina Kornicker & Sohn 1976

Type species. Danielopolina carolynae Kornicker & Sohn 1976 .

Composition. This genus contains two subgenera D. ( Humphreysella ) Kornicker & Danielopol 2006 in Kornicker et al. 2006 and D. ( Danielopolina ) Kornicker et al. 2006. Members of both subgenera are represented in the present collection.

Correction. Kornicker & Iliffe (1998: 84) stated Danielopolina species A was collected in Open Rock Cave. The collection site should have been listed as Oven Rock Cave.

Diagnosis of subgenera. Humphreysella is without a posterior bristle on the protopod of the second antenna. Danielopolina bears a posterior bristle on the protopod of the second antenna.

Discussion of first antennae. The first and second segments of the first antennae of the adult female holotype and paratype of D. palmeri are linear ( Fig. 12 a–c ), whereas those segments of the adult female first antennae of the holotype and a paratype of D. exuma Kornicker & Iliffe 1998 illustrated by Kornicker & Iliffe (1998: fig. 51d–f) form a right angle. The first and second segments of the first antenna of another adult female of a paratype of D. exuma examined herein also form a right angle ( Fig. 13 j ). A survey of some of the literature in which species of Danielopolina have been described ( Kornicker & Iliffe 1989a, 1998, 2000) shows that some illustrations of the first antennae have linear first and second segments, and some show the two segments at right angles, and juveniles as well as adults of both sexes have first antennae of both forms. Examination of whole specimens showed that when the first and second segments are at right angles, the first antenna is partly withdrawn inside the carapace; whereas when the two segments are linear segments two– eight extend horizontally outside the carapace between the anterior edges of the valves. Apparently, when an extrinsic muscle is taut, segments one and two are linear. The various angles between the first and second segments of first antennae of species of Thaumatoconcha illustrated by Kornicker & Sohn (1976: fig. 7) indicate that a similar mechanism also operates in members of that genus.

Figures

FIGURE 12. Danielopolina palmeri, new species, holotype USNM 1021375, adult female, a, anterior of body showing Bellonci Organ, left first antenna, right maxilla, and upper and lower lips (nabs); b, right first antenna (mv), and Bellonci Organ and some internal muscles; c, left first antenna (lv), and Bellonci Organ; d, right second antenna drawn on body, mv (nabs); e, left seventh limb, lv; f, upper and lower lips drawn on body. Scale equals 0.05 mm.

FIGURE 13. Danielopolina palmeri, new species, holotype USNM 1021375, adult female: a, coxa of left mandible, lv; b, basis and endopod of left mandible, lv; c, endopod of right mandible drawn on body, lv (nabs); d, right maxilla, right fifth limb (nabs), and left lower lip drawn on body; e, left maxilla (nabs) and endites; f, right fifth and sixth limbs drawn attached to body, mv; g, left fifth limb, mv; h, tip of right fifth limb, lv; i, left sixth limb, mv (not all bristles of epipod shown). Danielopolina exuma Kornicker & Iliffe, USNM 194419, adult female: j, right first antenna showing some internal muscles, lv (nabs). Scale equals 0.05 mm.