Nuovi dati sul corredo cromosomico degli Efippigeridi italiani (Orthoptera—Tettigonioidea)

Bullini, Luciano ; Bianchi Bullini, Anna Paola

Atti della Accademia nazionale dei Lincei. Rendiconti della Classe di scienze fisiche, matematiche e naturali, Série 8, Tome 46 (1969) no. 2, pp. 213-216

Résumé

In order to clarify the taxonomy of the fam. Ephippigeridae the chromosome complements of three species: Ephippiger cavannai (Targ. Tozz.), Ephippiger ruffoi Galvagni and Uromenus brevicollis insularis Chop. are described. In the first two species the karyotype is 2n = 29 in the male and 2n = 30 in the female, while in the third is 2n = 23 in the male and 2n = 24 in the female. All chromosomes are telocentric except two large metacentric in E. cavannai and E. ruffoi and four large metacentric in U. brevicollis. The cytological evidence indicates that: 1) the systematic position of E. cavannai is not in the genus Steropleurus, in which it has been included by almost all the authors, but in the genus Ephippiger, as first pointed out by La Greca; 2) the systematic position of U. brevicollis is not in the genus Uromenus, but in the genus Steropleurus.