Comprehensive Description

provided by Smithsonian Contributions to Zoology
Cyclasterope albomaculata (Baird, 1860)

Cypridina albo-maculata Baird, 1860a:201, pl. 71: figs. 1, 1a-d; 1860b:140.—Miers, 1884:321.—Müller, 1912:50 [referred species to “Cypridinarum genera dubia et species dubiae”].

Cypridina(?) albo-maculata.—Brady, 1880:153 [listed].

Cypridina albomaculata.—Brady, 1897:87.—Skogsberg, 1920: 444 [suggested a close relationship to genus Cyclasterope].

?Cyclasterope albomaculata.—Kornicker, 1975a:30.

HOLOTYPE.—British Museum (Natural History) dry collection, 61.69.

TYPE-LOCALITY.—Swan River, Western Australia, near Perth.

MATERIAL.—None examined.

DISTRIBUTION.—Western and Northwestern Australia (22–31 m depth at latter locality, Miers, 1884:321).

DISTRIBUTION.—Mediterranean Sea: Gulf of Naples and Bay of Marseille. Eastern Atlantic Ocean: off West Africa: Spanish Sahara, Mauritania, São Thomé Island, Ivory Coast, South Africa in False Bay, Saldanha Bay, Langebaan Lagoon, and Lambert's Bay. Western Atlantic Ocean: Argentina. Western Indian Ocean: Madagascar, Mozambique?, Bab el Mandeb. Western Pacific Ocean (southern part): Australia, New Zealand. Eastern Pacific Ocean: ?Alaska, California, Baja California, Chile. Depth range intertidal to 96 m, also collected in surface tow. A record of 1100 m off Mauritania is considered atypical or questionable.

DIAGNOSIS.—Carapace of females and juveniles evenly rounded. Anterior margin of rostrum and anteroventral margin with inner edge of peripheral rim either scalloped (Cycloleberis) or smooth (Leuroleberis, Alphaleberis).

First Antenna: Fifth joint: dorsal margin of 1st joint without teeth or nodes; sensory bristle of adult female with 2–8 marginal filaments and 7 to 15 long terminal filaments. Seventh joint: a-bristle straight bristlelike (Alphaleberis) or curved clawlike (Leuroleberis, Cycloleberis).

Fifth Limb: Dorsal margin of comb of female weakly convex, of male with 1 or 2 processes.

Seventh Limb: Terminus with single set of opposing combs.

Furca: Each lamella with 3 stout main claws followed by 8–10 slender bristlelike secondary claws. No bristles present between main claws.

Posterior of Body: Dorsal process either absent or represented by small posteriorly pointing bulge.

COMPARISONS.—The tribe Cycloleberidini differs from the tribes Cyclasteropini and Tetraleberidini in not having bristles between the main claws of the furca. The terminus of the 7th limb of the Cycloleberidini bears single opposing combs, not double as do members of the Cyclasteropini.
bibliographic citation
Kornicker, Louis S. 1981. "Revision, Distribution, Ecology, and Ontogeny of the Ostracode Subfamily Cyclasteropinae (Myodocopina: Cylindroleberididae)." Smithsonian Contributions to Zoology. 1-548. https://doi.org/10.5479/si.00810282.319