Ithycythara lanceolata

Ithycythara lanceolata, common name the spear mangelia, is a species of sea snail, a marine gastropod mollusk in the family Mangeliidae.[1]

Ithycythara lanceolata
Shell of Ithycythara lanceolata
Scientific classification
Kingdom: Animalia
Phylum: Mollusca
Class: Gastropoda
Subclass: Caenogastropoda
Order: Neogastropoda
Superfamily: Conoidea
Family: Mangeliidae
Genus: Ithycythara
Species:
I. lanceolata
Binomial name
Ithycythara lanceolata
(C. B. Adams, 1850)
Synonyms[1]
  • Mangelia balteata Reeve, 1846 (original combination)
  • Mangelia lanceolata Adams C. B., 1850
  • Pyrgocythara balteata (Reeve, 1846)

Description

The length of the shell varies between 4 mm and 20 mm.

(Original description) The shell is very long and has a lanceolate shape. It is brownish, more or less tinged with purple, with fine spiral lines of white and of dark brown, which are more conspicuous on the ribs; with a darker and wider brown line along the suture. The longitudinal sculpture consists of six very prominent acute transverse ribs on each whorl, which are nearly or quite continuous on the successive whorls. There is a spiral elevated line, on the middle of the whorls, which is obsolete in the intercostal spaces and has nodtdous intersections with the ribs. The protoconch is acute. The spire shows rectilinear outlines. The shell contains 8 whorls, scarcely convex, with a lightly impressed suture. The outer lip is finely denticulate within. The sinus is shallow. The siphonal canal is not very short.[2]

Distribution

I. lanceolata can be found in Atlantic waters, ranging from the eastern coast of Florida south to Brazil.;[3] in the Caribbean Sea, the Gulf of Mexico and the Lesser Antilles.

Habitat

Depth range based on 5 specimens in 1 taxon.

Water temperature and chemistry ranges based on 1 sample.[4]

Environmental ranges

 Depth range (m): 2.75 – 18
 Temperature range (°C): 23.720 – 23.720
 Nitrate (umol/L): 0.501 – 0.501
 Salinity (PPS): 36.080 – 36.080
 Oxygen (ml/l): 4.807 – 4.807
 Phosphate (umol/l): 0.100 – 0.100
 Silicate (umol/l): 0.805 – 0.805[4]

References
  1. Ithycythara lanceolata (C. B. Adams, 1850). Retrieved through: World Register of Marine Species on 8 August 2011.
  2. Adams, C. B. 1850. Description of supposed new species of marine shells which inhabit Jamaica. Contributions to Conchology, 4: 56–68, 109–123 This article incorporates text from this source, which is in the public domain.
  3. Tunnell, John W., Jr., Felder, Darryl L., & Earle, Sylvia A., eds. Gulf of Mexico Origin, Waters, and Biota, Volume 1: Biodiversity. Texas A&M University Press, 2009. 666.
  4. http://eol.org/pages/456391/details#Description
  • Rosenberg, G., F. Moretzsohn, and E. F. García. 2009. Gastropoda (Mollusca) of the Gulf of Mexico, Pp. 579–699 in Felder, D.L. and D.K. Camp (eds.), Gulf of Mexico–Origins, Waters, and Biota. Biodiversity. Texas A&M Press, College Station, Texas
  • Tucker, J.K. 2004 Catalog of recent and fossil turrids (Mollusca: Gastropoda). Zootaxa 682:1–1295.
  • "Ithycythara lanceolata". Gastropods.com. Retrieved 16 January 2019.
  • Specimen at MNHN, Paris
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