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ON THE REDISCOVERY OF CHIROCEPHALUS RUFFOI COTTARELLI & MURA, 1984 IN TEMPORARY POOLS OF THE SECCHIA AND PANARO VALLEYS (TUSCAN-EMILIAN APENNINES, NORTHERN ITALY) (BRANCHIOPODA, ANOSTRACA)

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[The data presented in this note extend the known distribution of the anostracan Chirocephalus ruffoi Cottarelli & Mura, 1984, an endemic Italian species. The additional localities reported here had been sampled occasionally from the late 1940s to the early 1960s, but at that time the species was misidentified as C. diaphanus Prévost, 1803. Re-examination of the sampled material, including resting-egg morphology, during this study has demonstrated that in fact the misidentified specimens belong to C. ruffoi, a species known to occur at other sites in the Tuscan-Emilian Apennines. The usefulness of scanning electron microscopy for examining egg-shell morphology in order to aid, at least in certain cases, in a correct identification of species of Anostraca, is stressed.

I dati presentati in questa nota ampliano la distribuzione della specie Chirocephanus ruffoi, Cottarelli & Mura, 1984, endemica per l'Italia. Le località di raccolta citate in questo studio erano state campionate tra la fine degli anni '40 e l'inizio dei '60, ma gli anostraci ivi rinvenuti erano stati erroneamente ascritti alla specie C. diaphanus Prévost, 1803. L'attuale riesame del materiale prelevato, ivi compresa la morfologia delle uova resistenti, ha rivelato che si tratta invece di C. ruffoi, noto anche per altri siti dell'Appennino Tosco-Emiliano. Questo reperto sottolinea ulteriormente l'utilità, in molti casi comprovata, dell'uso della morfologia dell'involucro terziario delle uova resistenti come carattere con valore tassonomico., The data presented in this note extend the known distribution of the anostracan Chirocephalus ruffoi Cottarelli & Mura, 1984, an endemic Italian species. The additional localities reported here had been sampled occasionally from the late 1940s to the early 1960s, but at that time the species was misidentified as C. diaphanus Prévost, 1803. Re-examination of the sampled material, including resting-egg morphology, during this study has demonstrated that in fact the misidentified specimens belong to C. ruffoi, a species known to occur at other sites in the Tuscan-Emilian Apennines. The usefulness of scanning electron microscopy for examining egg-shell morphology in order to aid, at least in certain cases, in a correct identification of species of Anostraca, is stressed.

I dati presentati in questa nota ampliano la distribuzione della specie Chirocephanus ruffoi, Cottarelli & Mura, 1984, endemica per l'Italia. Le località di raccolta citate in questo studio erano state campionate tra la fine degli anni '40 e l'inizio dei '60, ma gli anostraci ivi rinvenuti erano stati erroneamente ascritti alla specie C. diaphanus Prévost, 1803. L'attuale riesame del materiale prelevato, ivi compresa la morfologia delle uova resistenti, ha rivelato che si tratta invece di C. ruffoi, noto anche per altri siti dell'Appennino Tosco-Emiliano. Questo reperto sottolinea ulteriormente l'utilità, in molti casi comprovata, dell'uso della morfologia dell'involucro terziario delle uova resistenti come carattere con valore tassonomico.]

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