En este trabajo se presenta una revision del genero Amphidelus Thorne, 1939. Se discuten varios aspectos de su morfologta y taxonomia y se evaluan la variabilidad y el valor diagnostico de los principales rasgos morfologicos. El genero se caracteriza dentro de la familia Alaimidae por su peculiar estructura vulvo-vaginal: vagina con paredes gruesas y vulva con labios abiertos. Otros caracteres tipicos son: tamano relativamente grande, region labial baja, anfidios caliciformes bien desarrollados y con abertura en forma de fisura, faringe relativamente corta que ensancha gradualmente en su parte posterior, poro excretor situado en position anterior, sistema genital femenino mayormente didelfico, sistema reproductor masculino monorquico con el testi'culo dirigido anteriormente, espi'culas cortas y provistas de pieza central, y tres a cinco papillas precloacales ventrales. Quince especies se incluyen en el genero, dos de ellas nuevas: A. pilatoi sp. n. y A. thornei sp. n. Se describen e ilustran todas las especies, y se da una clave para la determination de las mismas.
The genus Amphidelus Thorne, 1939 is revised. Several aspects of its morphology and taxonomy are discussed and the variability and diagnostic significance of the main morphological characters are evaluated. The genus is characterized, among Alaimidae, bv the peculiar vulvo-vaginal structure: thick-walled vagina and vulva with open lips. Other typical characters are: relatively large size, low lip region, well developed chaliciform amphids with slit-like opening, pharynx relatively short, gradually expanding in its posterior part, excretory pore anteriorly located, female genital apparatus mostly didelphic, male reproductive apparatus monorchic with anteriorly directed testis, spicules short with central piece and three to five ventral precloacal papillae. Fifteen species are attributed to this genus: among them the new species A. pilatoi sp. n. and A. thornei sp. n are erected. All the species of Amphidelus are described and illustrated and a key to the species is given.
Revision of the genus Amphidelus Thorne, 1939 (Nematoda: Alaimidae)
CLAUSI, MIRELLA;
1998-01-01
Abstract
The genus Amphidelus Thorne, 1939 is revised. Several aspects of its morphology and taxonomy are discussed and the variability and diagnostic significance of the main morphological characters are evaluated. The genus is characterized, among Alaimidae, bv the peculiar vulvo-vaginal structure: thick-walled vagina and vulva with open lips. Other typical characters are: relatively large size, low lip region, well developed chaliciform amphids with slit-like opening, pharynx relatively short, gradually expanding in its posterior part, excretory pore anteriorly located, female genital apparatus mostly didelphic, male reproductive apparatus monorchic with anteriorly directed testis, spicules short with central piece and three to five ventral precloacal papillae. Fifteen species are attributed to this genus: among them the new species A. pilatoi sp. n. and A. thornei sp. n are erected. All the species of Amphidelus are described and illustrated and a key to the species is given.I documenti in IRIS sono protetti da copyright e tutti i diritti sono riservati, salvo diversa indicazione.
