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Taxon profile

species

Checkered Pheasant
Eulithidium affine (C. B. Adams, 1850)

kingdom Animalia - animals »  phylum Mollusca - mollusks »  class Gastropoda - gastropods »  order Trochida »  family Phasianellidae »  genus Eulithidium

Scientific synonyms

Tricolia affinis C. B. Adams, 1850

Other names

= Polka-dot Pheasant
= Spotted Pheasant

Images

Eulithidium affine - Checkered Pheasant

Author: Jan Delsing

Eulithidium affine - Checkered Pheasant

Author: Clench, W.J. & Turner, R.D.

Eulithidium affine - Checkered Pheasant

Author: Tunnell et al.

Eulithidium affine - Checkered Pheasant

Author: Rehder, H.A.

Eulithidium affine - Checkered Pheasant

Author: Daccarett, E.Y. & Bossio, V.S.

Eulithidium affine - Checkered Pheasant

Author: Rios, E.

Taxon in country check-lists*

* List of countries might not be complete

Description

Shell ovate: with waving or zigzag transverse flames of brown or red; and very numerous minute well defined dots of red or brown, with white shadows on their right side, somewhat in irregular waving or zigzag series, on a whitish ground: apex acute: spire with moderately convex outlines: whorls nearly five, moderately convex, a little flattened along the middle, with a moderately impressed suture: aperture elliptical: with a small umbilicus and groove issuing from it, which are sometimes concealed by the labial deposit. This species was at first mistaken for T. pulla.
Mean divergence about 60°; length of spire .16 inch; total length .31 inch; breadth .19 inch.
Clench, W.J. & Turner, R.D., 1950. The Western Atlantic marine mollusks described by C. B. Adams.
Eulithidium affine (C. B. Adams, 1850) Stained Pheasant
Distribution: Texas to lower Caribbean; Brazil. Size: 5 to 8 mm.
Description: Color variegated, rose-brownish to rose-greenish base with spirally arranged, somewhat regularly spaced red spots, usually paired with white dots and with dark green, reddish-brown or black zigzag-type splotches; shell shape high, conic, and broader at base; sculpture smooth with the exception of microscopic spiral and axial striae; spire stout with nuclear whorls relatively low and flat; aperture ovate; inner lip with a narrow parietal shield; outer lip thin, slightly flared, crossing over upper parietal shield and columella; umbilicus slitlike.
Habitat: In seagrass beds, primarily turtle grass; also on algae and coral reefs at depths up to 63 m (207 ft).
Synonym: Tricolia affinis cruenta Robertson, 1958.
Tunnell, J.W. , Andrews, J. , Barrera, N.C. & Moretzsohn, F., 2010. Encyclopedia of Texas seashells.
Author: Jan Delsing

Links and literature

EN Galli C.: WMSDB - Wolrdwide Mollusc Species Data Base July 10, 2013 [http://www.bagniliggia.it/WMSD/WMSDhome....] [as Eulithidium affine (Adams, 1850)]
Data retrieved on: 23 November 2013

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