Drymaeus poecilus

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Drymaeus poecilus
Drymaeus poecilus (MNHN-IM-2000-24678).jpeg
Syntype specimen of D. poecilus held at the MNHN Mollusca collection, France
Scientific classification OOjs UI icon edit-ltr.svg
Domain: Eukaryota
Kingdom: Animalia
Phylum: Mollusca
Class: Gastropoda
Order: Stylommatophora
Family: Bulimulidae
Genus: Drymaeus
Species:
D. poecilus
Binomial name
Drymaeus poecilus
(A. d'Orbigny, 1835)
Synonyms [1]
  • Bulimus poecilus(A. d'Orbigny, 1835)
  • Bulimus poecilus var. ictericusAncey, 1892
  • Drymaeus (Drymaeus) poecilus(A. d'Orbigny, 1835)
  • Drymaeus minor(A. d'Orbigny, 1837)
  • Helix (Bulimus) poecila(A. d'Orbigny, 1835)
  • Helix (Bulimus) poecila var. majorA. d'Orbigny, 1838
  • Helix (Bulimus) poecila var. minorA. d'Orbigny, 1838
  • Helix poecilaA. d'Orbigny, 1835 (basionym)

Drymaeus poecilus is a species of tropical air-breathing land snail, a pulmonate gastropod mollusc in the family Bulimulidae native to parts of South America. [1] It was first described in 1835, with the Bolivian Chiquitos Province as its type locality. The species is known to occur in several South American regions and countries beyond Bolivia, including Argentina, Brazil, and Paraguay, inhabiting both dry and humid ecoregions.

Contents

Taxonomy and nomenclature

The species was first described in 1835 by French naturalist Alcide d'Orbigny as Helix poecila, with the Bolivian Chiquitos Province designated as its type locality. [2] Its specific epithet, poecila, originates from the Greek word ποικίλος (poikilos), meaning "variegated" or "speckled". [3] In a later study published in 1837, d'Orbigny reassigned the species to the genus Bulimus, renaming it Bulimus poecilus. [4] This classification was revised in 1853 by the German conchologist Ludwig Pfeiffer, who placed the species in Bulimulus as Bulimulus poecilus. [5] This designation remained accepted in the literature [6] [7] until 1898, when American malacologist Henry A. Pilsbry transferred the species to the genus Drymaeus, [8] establishing the currently accepted combination, Drymaeus poecilus. [1]

Description

A live specimen of Drymaeus poecilus crawling over a piece of tree bark at the El Impenetrable National Park, Argentina Drymaeus poecilus "Belleza chaquena".png
A live specimen of Drymaeus poecilus crawling over a piece of tree bark at the El Impenetrable National Park, Argentina

This medium-sized land snail possesses a shell measuring 31 to 37 mm in length, consisting of up to seven whorls. [9] The spire is conical, with a shallow suture. The aperture is broad and oblique, accounting for roughly half the shell's length. In larger specimens, the peristome (aperture's outer edge) is simple and slightly reflected. The shell's outer surface is glossy, ranging in color from white to yellowish, adorned with dark brown to reddish spiral lines and axial markings in varied patterns. [9] Like other Drymaeus snails (as well as related genera such as Antidrymaeus , Mesembrinus , and Pseudoxychona ), the protoconch exhibits a distinctive reticulate (net-like) pattern, formed by intersecting spiral and axial threads. [10] The animal's head-foot is dark beige, with a grayish foot base and tentacles. [9]

Distribution and habitat

396 Arg Barreales.JPG
Canal de derivacion del Rio Negro al Rio Salado al Sur.jpg
Both dry climate areas such as the Argentine Monte (left) and humid environments such as the Humid Chaco (right) are inhabited by Drymaeus poecilus.

Drymaeus poecilus is native to regions of South America from Bolivia to Argentina, including Paraguay and Brazil. [9] In Brazil, its presence has been recorded in several states, including Tocantins, Goiás, Mato Grosso, Mato Grosso do Sul, Minas gerais, and São Paulo. [11] [12] The species inhabits a variety of environments throughout its recorded range, from humid jungles such as the Yungas, to drier areas like the Dry Chaco, as well as other ecoregions such as the Humid Chaco, Alto Paraná, Espinal, and Monte. [9]

Ecological interactions

Drymaeus poecilus is preyed upon by the red tegu Salvator rufescens . [13]

References

  1. 1 2 3 "Drymaeus poecilus (A. d'Orbigny, 1835)". MolluscaBase. Retrieved 31 March 2025.
  2. ↑ d'Orbigny, Alcide D. (1835). "Synopsis terrestrium et fluviatilium molluscorum, in suo per Americam meridionalem itinere collectorum". Magasin de Zoologie. 5 (61): 11.
  3. ↑ Christopher Scharpf; Kenneth J. Lazara (9 March 2023). "Order CYPRINODONTIFORMES: Families POECILIIDAE, ANABLEPIDAE, VALENCIIDAE, APHANIIDAE and PROCATOPODIDAE". The ETYFish Project Fish Name Etymology Database. Christopher Scharpf and Kenneth J. Lazara. Retrieved 25 May 2023.
  4. ↑ d'Orbigny, Alcide D. (1837). Voyage dans l'Amérique méridionale : (le Brésil, la république orientale de l'Uruguay, la République argentine, la Patagonie, la république du Chili, la république de Bolivia, la république du Pérou), exécuté pendant les années 1826, 1827, 1828, 1829, 1830, 1831, 1832, et 1833. Tome 5, Part 3. Paris: Chez Pitois-Levrault et ce., libraires-éditeurs. pp. 268–269.
  5. ↑ Pfeiffer, Ludwig K.G. (1853). Monographia heliceorum viventium : sistens descriptiones systematicas et criticas omnium hujus familiae generum et specierum hodie cognitarum. Volumen Tertium. Leipzig: F.A. Brockhaus.
  6. ↑ Hupé, M. H. (1857). Castelnau, F. (ed.). Animaux nouveaux ou rares recueillis pendant l'expedition dans les parties centrales de L'Amerique du Sud, de Rio de Janeiro a Lima, et de Lima au Para. Tome Second. Paris: FR Chez P. Bertrand.
  7. ↑ Ancey, C. F. (1897). "Viaggio del Dr. Alfredo Borelli nel Chaco boliviano e nella Repubblica Argentina e nel Paraguay, XI: Resultats malacologiques accompagnés d'une notice sur le spèces précédemment recueillies par ce voyaguer". Bolettino dei Musei di Zoologia ed Anatomia Comparata della R. Università di Torino. 12 (309): 1–22.
  8. ↑ Pilsbry, Henry A. (1897–1898). Manual of Conchology, Second Series. Pulmonata. Vol. 11. American Bulimulidae: Bulimulus, Neopetraeus, Oxychona, and South American Drymaeus. Philadelphia: Published by the Author.
  9. 1 2 3 4 5 Díaz, Ana Carolina (2022). "FICHA MALACOLÓGICA: Choro moro Drymaeus poecilus (d´Orbigny, 1835)". Boletín de la Asociación Argentina de Malacología (in Spanish). 12 (2). La Plata: Asociación Argentina de Malacología: 23. ISSN   2314-2219.
  10. ↑ Breure, Abraham S.H. (1979). "Systematics, phylogeny and zoogeography of Bulimulinae (Mollusca)". Zoologische Verhandelingen. 168: 3–200.
  11. ↑ Salvador, Rodrigo B.; Cavallari, Daniel C.; Simone, Luiz R. L. (2015). "Taxonomical study on a sample of land snails from Alcobaça (Bahia, Brazil), with description of a new species". Journal of Conchology. 42 (1): 67–78. doi:10.15496/publikation-11712.
  12. ↑ Cavallari, Daniel C.; Rosa, Rafael M.; De Luca, André C.; Silva, Fernanda S.; Ribeiro, Felipe B.; Salvador, Rodrigo B. (2024). "Taxonomic synopsis of land snails (Mollusca: Gastropoda) from the Brazilian Midwest deposited in the Coleção Malacológica de Ribeirão Preto, University of São Paulo, Brazil". Journal of Conchology. 45 (2): 368–381. doi:10.61733/jconch/4531.
  13. ↑ Williams, Jorge D.; Donadío, Oscar E.; Ré, Ivan (1993). "Notas relativas a la dieta de Tupinambis rufescens (Reptilia: Sauria) del noroeste argentino" (PDF). Neotrópica. 39 ((101-102)): 45–51.
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