Antillorbis

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Antillorbis
Antillorbis aeruginosis right side.png
Antillorbis aeruginosus
Scientific classification OOjs UI icon edit-ltr.svg
Kingdom: Animalia
Phylum: Mollusca
Class: Gastropoda
Superorder: Hygrophila
Family: Planorbidae
Subfamily: Planorbinae
Tribe: Drepanotrematini
Genus: Antillorbis
Harry & Hubendick, 1964 [1]

Antillorbis is a genus of freshwater gastropods belonging to the family Planorbidae. [2] This genus is distributed throughout the tropics and subtropics of the Americas. [2]

Contents

Description

Antillorbis species are small, between 2.5–5 mm (0.098–0.197 in) in shell width. Both species have a slight sculpture consisting of fine, spiraling lines, though this is much more common in A. aeruginosus. [3] The umbilicus is sunken, giving a concave appearance to the left and right side of the shell. The right side is less concave. [4] [5] Like the genus Drepanotrema , Antillorbis species have two flagella that attach to the base of the penis sheath. [3]

Differences Between Species [3]
A. aeruginosusA. nordestense
SculptureMore prominentLess prominent
Aperture RounderOval-shaped
Reproductive TractLongerShorter
Prostate DiverticulesMoreFewer

Distribution

Antillorbis species are native to the Americas. A. aeruginosus can be found in North and Central America, while A. nordestensis may be found in South America. [2]

Species

The species in this genus are as follows: [1] [2]

References

  1. 1 2 Auffenberg, Kurt (2022). "Antillorbis H. W. Harry & Hubendick, 1964". WoRMS. World Register of Marine Species . Retrieved 28 August 2025.
  2. 1 2 3 4 "Antillorbis". Global Biodiversity Information Facility . Retrieved 2025-08-28.
  3. 1 2 3 Pointier, J. P.; Escoubeyrou, K.; Bargues, B. D.; Mas-Coma, S. (2001). "Drepanotrema Nordestense (Lucena, 1953) (Pulmonata: Planorbidae): A New Record for the Bolivian Altiplano and ITS Differentiation by Morphology and Enzymes". Journal of Molluscan Studies . 67: 7–16. doi:10.1093/mollus/67.1.7.
  4. Pilsbry, H. A.; Ferriss, J. H. (1906). "MOLLUSCA OF THE SOUTHWESTERN STATES. II". Proceedings of the Academy of Natural Sciences of Philadelphia. 58: 165. ISSN   0097-3157. LCCN   12030019. OCLC   1382862.
  5. Paraense, W. L. (1975). "ESTADO ATUAL DA SISTEMÁTICA DOS PLANORBÍDEOS BRASILEIROS". Archivos do Museu Nacional do Rio de Janeiro (in Brazilian Portuguese). 55: 124. ISSN   0365-4508. LCCN   05017782. OCLC   1307697.