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Cuadernos de Investigación UNED

versión On-line ISSN 1659-4266versión impresa ISSN 1659-4266

Resumen

LOPEZ, Adolfo; URCUYO, Janina  y  VEGA, Gabriel. Extensionof thegenusPseudopeas(Dysopeas)(Gastropoda: Subulinidae) from Venezuela to Nicaragua. Cuadernos de Investigación UNED [online]. 2015, vol.7, n.2, pp.333-336. ISSN 1659-4266.

The study of Nicaraguan land snails is fragmentary. Recent sampling produced specimens of an undetermined species of PseudopeasPutzeys, 1899. This genus was segregated from OpeasAlbers, 1850 by reason of its prominent rib sculpture and later re-described by Pilsbry (1906) for the characteristic spiral sculpture of its nepionic whorls. Baker (1927) named a new subgenus Dysopeasfor species where the spiral sculpture covers the entire shell, not only the nepionic whorls. The Nicaragua specimens show nepionic and body sculptures that precisely match descriptions and illustrations given by Pilsbry and Baker for the complex Pseudopeas/Dysopeas.Since 1999, a total of 160 specimens have been collected from El Castillo on Río San Juan, Isletas de Granada and the Universidadde lasRegionesAutónomas de la Costa Caribe Nicaragüense (URACCAN) in Bluefields. Similitude with some sculpture traits and protoconch development with species of Spiraxidae, Subulinidae or Lamellaxis might cause confusion in the determination of Pseudopeas. Besides the critical protoconch sculpture and profile, additional discriminatory differences from these look-alikes are dimensions, sculpture pattern and crystalline structure.

Palabras clave : Subulinidae; Pseudopeas; Dysopeas; genus extension; Nicaragua.

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