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Ottavio Janni

  • Biodiversity Journal, 8 (1): 033-038

    Andrea Corso, Ottavio Janni, Maurizio Pavesi & Michele Viganò
    Update to the status of Pantala flavescens (Fabricius, 1798) and Trithemis kirbyi Selys, 1891 for Italy and Central Mediterranean basin (Odonata Libellulidae)

    ABSTRACT
    An overview of the records of Pantala flavescens and Trithemis kirbyi for the Sicilian Channel islands and mainland Sicily, with comments on their possible status in this area, is provided. In light of the number of observed individuals, P. flavescens is likely to be regular in the studied area, with up to 30 individuals recorded per year since autumn 2012. Trithemis kirbyi, conversely, is only known from few scattered records, so that its status in the area remains to be elucidated. No evidence of reproductive behaviour nor of actual breeding in this area was hitherto found for any of the two species.

  • Biodiversity Journal, 3 (4): 459-478

    Andrea Corso, Ottavio Janni, Maurizio Pavesi, Michael Sammut, Arnold Sciberras & Michele Viganò
    Annotated checklist of the dragonflies (Insecta Odonata) of the islands of the Sicilian Channel, including the first records of Sympetrum sinaiticum Dumont, 1977 and Pantala flavescens (Fabricius, 1798) for Italy

    ABSTRACT
    In this paper we report data on the historical and recent status of all dragonfly species (Insecta, Odonata) recorded for the Sicilian Channel islands: the Pelagie islands and Pantelleria, politically belonging to Italy, and Maltese Archipelago islands. The number of species known for the former group of islands raises from 7 to 20. Of these, 2 are new for the Italian fauna, namely the Desert Darter Sympetrum sinaiticum, noticed through likely sightings starting from 2010 on Lampedusa, and confirmed through voucher specimens collected in April 2012, and the Wandering Glider Pantala flavescens, first noticed in October 2012 on Lampedusa and Linosa; while Calopteryx sp. cf. haemorrhoidalis, Ischnura genei, Aeshna mixta, Orthetrum nitidinerve, Orthetrum coerulescens anceps, Crocothemis erythraea, Sympetrum striolatum, S. meridionale, Brachythemis impartita, Trithemis annulata and T. kirbyi, already known for Italy, are new for the Italian islands of the Sicilian channel. The Maltese fauna includes at present 18 recorded species; the previously reported Trithemis arteriosa is to be deleted from the list, since the concerned specimen upon re-examination proved to be T. annulata.

  • Biodiversity Journal, 11 (1): 065-068

    Ottavio Janni, Michele Viganò & Andrea Corso
    First records of Diplacodes lefebvrii (Rambur, 1842) for Sicily and additional record of Trithemis kirbyi Selys, 1891(Odonata Libellulidae)
    https://doi.org/10.31396/Biodiv.Jour.2020.11.1.65.68

    ABSTRACT
    We report the first records (three specimens on two dates) of Diplacodes lefebvrii (Rambur, 1842) (Odonata Libellulidae) for Sicily, obtained during October 2019 at the island of Linosa, Pelagie Archipelago (Sicily, Italy). Additional record of Trithemis kirbyi Selys, 1891 (Odonata Libellulidae), already known for the region, are provided.

  • Biodiversity Journal, 10 (3): 195-200

    Andrea Corso, Ottavio Janni, Carlo Fracasso, Alessandro Biscaccianti & Lorenzo De Lisio
    New data on the distribution of the endangered dragonflies Oxygastra curtisii (Dale, 1834), Somatochlora meridionalis (Vander Linden, 1825) and S. flavomaculata Nielsen, 1935 in Central-Southern Italy (Odonata Cordulidae)
    https://doi.org/10.31396/Biodiv.Jour.2019.10.3.195.200

    ABSTRACT
    New data on distribution in central-southern Italy of three species of dragonflies (Odonata Cordulidae) are here reported: Oxygastra curtisii (Dale, 1834), Somatochlora meridionalis Nielsen, 1935 and S. flavomaculata (Vander Linden, 1825). The first one it is included in Annex II of Habitat directive of the Europe. For S. curtisi we reports for the first time its presence in Abruzzo and Molise regions, while for meridionalis we report the national south most known sites, while for flavomaculata a range extension of more than 200 km south.

  • Biodiversity Journal, 10 (1): 007-012

    Andrea Corso, Ottavio Janni, Lorenzo De Lisio & Carlo Fracasso
    Update to the status of Lindeni tetraphylla (Vander Linden, 1825) (Odonata Gomphidae) in Italy, with special reference to the Molise regions
    https://doi.org/10.31396/Biodiv.Jour.2019.10.1.7.12

    ABSTRACT
    Data concerning a new reproductive population of Lindenia tetraphylla (Vander Linden, 1825 (Odonata Gomphidae), found by the authors in Molise, Central Italy, between 2012 and 2018, are here reported. The species was recorded in some artificial farm ponds of the inland agricultural area, where localized but conspicuous reproductive populations are annually found. A single sighting from 2017 is also reported from the Abruzzo region, where the species has never been recorded before. The data here discussed update the status for Italy and enlarge the known distribution area. All the sites where the species is found in Molise are listed and mapped, brief data concerning habitat used are also reported.