Respiratory structures in the pleopodal exopods of the species of the isopod genus Aphiloscia Budde-Lund have been investigated. Three different types have been found: (1) the annulicornis-type uncovered lung, with slightly wavy surface; (2) thefusca-type uncovered lung, with many tubuliform folds; and (3) the maculicornis-type covered lung, which consists of irregular branches joining into an atrium that opens to the outside through a single spiracle, the surface around the spiracle being differentiated into a perispiracular area of polygonal verruca-like protuberances. The diagnostic characters of the genus Aphiloscia are discussed and all its species listed. Six species are described as new: A. rwandaensis from Rwanda; A. humicola from Somalia; A. fusca, A. madagascarensis and A. bipunctata from Madagascar; and A. tinglei from Zimbabwe. The type species, A. annulicornis Budde-Lund, and A. maculicornis Budde-Lund are also illustrated. Aphiloscia congolensis Arcangeli and Massaiscia obstii Verhoeff are considered to be junior synonyms of A. maculicornis.
Philosciids with pleopodal lungs? The case of the genus Aphiloscia Budde-Lund, 1908 (Crustacea: Isopoda: Oniscidea), with a description of six new species
PAOLI Pasquino;TAITI Stefano
1994
Abstract
Respiratory structures in the pleopodal exopods of the species of the isopod genus Aphiloscia Budde-Lund have been investigated. Three different types have been found: (1) the annulicornis-type uncovered lung, with slightly wavy surface; (2) thefusca-type uncovered lung, with many tubuliform folds; and (3) the maculicornis-type covered lung, which consists of irregular branches joining into an atrium that opens to the outside through a single spiracle, the surface around the spiracle being differentiated into a perispiracular area of polygonal verruca-like protuberances. The diagnostic characters of the genus Aphiloscia are discussed and all its species listed. Six species are described as new: A. rwandaensis from Rwanda; A. humicola from Somalia; A. fusca, A. madagascarensis and A. bipunctata from Madagascar; and A. tinglei from Zimbabwe. The type species, A. annulicornis Budde-Lund, and A. maculicornis Budde-Lund are also illustrated. Aphiloscia congolensis Arcangeli and Massaiscia obstii Verhoeff are considered to be junior synonyms of A. maculicornis.I documenti in IRIS sono protetti da copyright e tutti i diritti sono riservati, salvo diversa indicazione.