As part of the classification of Membracidae from Gabon and Equatorial Guinea, a new species group of the genus Hamma Buckton, 1905 is proposed, and three new species are described: Hamma nigrum sp. nov., Hamma spinellii sp. nov. and Hamma caneparii sp. nov. An updated checklist and key to the genus Hamma are provided.
Riassunto -Gli autori descrivono due specie nuove di Membracidae del genere Hamma Buckton, 1905 e segnalano la specie Hamma capeneri Boulard, 1968 in Gabon.Parole chiave -Auchenorrhyncha, Membracidae, genere Hamma Buckton, 1905, nuove specie, nuovo record, Gabon, Guinea equatoriale, Africa. Buckton, 1905 (Hemiptera: Auchenorrhyncha) in Gabon.
Abstract -New species of the genus HammaThe authors describe two new species of Membracidae of the genus Hamma Buckton, 1905, and they record the species Hamma capeneri Boulard, 1968 from Gabon.
Specimens of Membracidae belonging to the genus Hamma collected in several surveys conducted between 2009 and 2012 in Gabon were examined. They represent six species, of which three are described as new to science: Hamma boulardi n. sp., Hamma carlini n. sp., Hamma franciscae n. sp.
Due nuove specie di peliocypadina Basilewsky, 1984 della Regione Afrotropicale (Coleoptera Carabidae Lebiini)Riassunto -Gli autori descrivono due nuove specie di Peliocypadina Basilewsky, 1984: peliocypas tagliaferrii n. sp. del Gabon e Demetriola maculata n. sp. del Madagascar. Sono fornite le fotografie relative all'habitus delle nuove specie e i caratteri diagnostici per la distinzione delle stesse dalle specie affini.Parole chiave: Carabidae, Lebiini, Peliocypadina, peliocypas, Demetriola, tassonomia, nuova specie, Africa, Gabon, Madagascar.Abstract -The description of two new species of Peliocypadina Basilewsky, 1984 is given: peliocypas tagliaferrii n. sp. from Gabon and Demetriola maculata n. sp. from Madagascar. p. tagliaferrii n. sp. is rather similar to p. debilis (LaFerté-Sénectère, 1849) but the first one can be easily distinguished from the latter by its tempora more obliquely restricted, pronotum more restricted and distinctly less rounded at sides in the anterior half, hind angles more protruding and sharp, elytra shorter and more dilated in the apical half and with darker brown colour. Demetriola maculata n. sp. can be distinguished from D. levis by its posterior supraorbital seta near the eye, pronotum more restricted in the anterior part, anterior lateral seta present (without lateral setae in D. levis), elytra more convex and less dilated in the posterior half, with a black, irregular median discal spot (without spot in D. levis) and shoulders evidently more distinct. The habitus of the new taxa are illustrated.
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