Review Article
Review and Catalog of the Ostracode Family Rutidermatidae (Crustacea: Myodocopa)
Table 6
Summary of characteristics of Alternochelata male.
| Species | lizardensis | nealei | sikorai |
| Shell length, mm | 1.36 | 1.38 | 1.38 | Surface with ribs (r) or smooth (s) | s | s | s | Incisur shallow or deep |
*Deep |
*Deep |
*Deep | No. medial br. rostrum | | | | (rostral infold) | ? | 7 | 6 | 1st antenna | | | | no. br. 2nd seg., d.-l.-v. | 1–1 | 1–1–1 | 1–1–1 | no. br. 3rd seg., d.-v | 1–1 | 1–1 | 1–1 | no. br. 4th seg., d.-v | 1–4 | 1–4 | 1–4 | no. fil. sens. br. | Numerous | 33 | Numerous | no. fil. b.-br | 3 | 3 | 3 | no. fil. c.-br. | 13 | 12 | 13 | no. fil. g.-br. | 3 | (1–2) | 1 | 2nd antenna | | | | endop. no. br. 1st seg. | 6 | 6 | 6 | endop. no. br. 2nd seg. | 2 | 2 | 2 | endop. no. br. 3rd seg. | 3 | 2 | 2 | Mandible | | | | Basale | | | | no. d. br. mid.-dist. | 3 | 3 | 3 | no. thin v. br. |
*6 | ? |
*5 | no. stout v. br. |
*0 | ? |
*3 | total no. v. br. | 6 | 8 | 8 | exop. + or − | − | + | − | 1st end. seg., no. v. br. | 3 | 3 | 3 | 2nd end. seg., no. d. br. | 7 | 7 | 7 | 2nd end. seg., no. v. br. excl. cl. | 6 | 6 | 6 | 3rd end. seg., no. br. excl. cl. | 6 | 5 | 6 | Maxilla, no. br. 3 endites | 6–4–4 | 6–6–7 | (5-6)–4–6 | 5th limb | | | | no. br. 3 endites | 3–4–7 | 2–(2-3)–(4-5) | (2–4)–4–5 | 3rd exop. seg., no. br. each lobe | 3–2 | 2–2 | 2–2 | 5th limb, 4th + 5th segs. no. br. | 5 | 4 | (3-4) | 6th limb | | | | no. epipodial br. | 2 | 2 | 2 | no. br. 4 endites | (3-4)–(3-4)–4–3 | 2–3–3–2 | 3–3–3–(1-2) | end.-seg., no. br. | 9 | 7 | 6 | 7th limb | | | | no. terminal cleaning br. | 2–2 | 2–2 | 2–2 | no. prox. cleaning br. | 2–2 | 2–2 | (1-2)–2 | no. comb-teeth | 9–2 | (11–13)–0 | 13–0 | Furca | | | | no. main claws | 4 | 4 | 4 | no. secondary claws | 5 | 6 | 6 | Copulatory limbs long or short (sh.) | sh. |
*sh. | ? | USNM Specimen Number | #158487 | #156596 | #158935 |
|
|
br.: bristles; cl.: claw; d.: dorsal; dist.: distal; endop.: endopodite; excl.: excluding; exop.: exopodite; fil.: filaments; l.: lateral; no.: number; prox.: proximal; seg.: segment; sens: sensory; v.: ventral. *: after Poulsen [10].
|