Abstract
Sixteen species ofLongitarsus have been chromosomally surveyed, showing a continuous range of even numbers from 2n=26 to 2n=32 chromosomes. Among the total of twenty-three known species, about 40% display a 14+Xy male karyotypic formula, the possible modal and most primitive one for the genus. The current taxonomy of species groupings is in good agreement with the chromosome numbers in some cases, but not in others. Also, there is no interrelationship between chromosome numbers and foodplant selection. The number of large bivalents at metaphase I is generally negatively correlated with the diploid value, suggesting the possible role of centric fusions coupled to shifts in the amount of chromatin as the main chromosomal changes in the evolution ofLongitarsus. The karyotypes of a few studied species are composed of metacentric chromosomes, some of them of rather large size, and a minute y-chromosome. A possible example of polymorphism for the chromosome number inL. nigrofasciatus is reported and briefly discussed.
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Furth, D. G., 1979a. Zoogeography and host plants of Longitarsus in Israel, with descriptions of six new species (Coleoptera Chrysomelidae). Israel J. Entomol. 13: 79–124.
Furth, D. G., 1979b. Wing polymorphism, host plant ecology, and biogeography of Longitarsus in Israel (Coleoptera: Chrysomelidae). Israel J. Entomol. 13: 125–148.
Jolivet, P., 1967. Notes systématiques et écologiques sur les chrysomélides marocains (Coleoptera) (2e note). Bull. Soc. Sc. nat. phys. Maroc 46: 305–394.
Jolivet, P. & Petitpierre, E., 1976. Plantes hôtes connues des Chrysolina Mots. (Col. Chrysomelidae). Essai sur les types de sélection trophique. Ann. Soc. ent. France (N.S.) 12: 123–149.
Kevan, D. K., 1967. The British species of the genus Longitarsus Latreille (Col., Chrysomelidae). Entom. monthly Mag. 103: 83–110.
Leonardi, C., 1972. La spermateca nella sistematica del genere Longitarsus (Coleoptera, Chrysomelidae). Atti Mus. civ. Stor. nat. Milano 113: 5–27.
Leonardi, C., 1973. Note corologiche e tassonomiche su alcuni Longitarsus con citazione di due specie nuove per l'Italia (Coleoptera, Chrysomelidae). Atti Mus. civ. Stor. nat. Milano 114: 5–42.
Mohr, K. H., 1962. Bestimmungstabelle und Faunistik der mitteleuropäischen Longitarsus-Arten. Entom. Blätter 58: 55–118.
Petitpierre, E., 1975. Notes on chromosomes of ten species of the genus Chrysolina Mots. (Coleoptera, Chrysomelidae). Genetica 45: 349–354.
Petitpierre, E., 1981. New data on the cytology of Chrysolina (Mots.) and Oreina Chevr. (Coleoptera, Chrysomelidae). Genetica 54: 265–272.
Seeno, T. N. & Wilcox, J. A., 1982. Leaf beetle genera (Coleoptera: Chrysomelidae). Entomography 1: 1–221.
Segarra, C. & Petitpierre, E., 1982. Preliminary data on the chromosomes of European Alticinae (Coleoptera, Chrysomelidae). Spixiana suppl. 7: 29–37.
Segarra, C. & Petitpierre, E., 1985. A new contribution to the knowledge of chromosomes of the European Alticinae (Coleoptera, Chrysomelidae). Cytobios 43: 23–30.
Smith, S. G. & Virkki, N., 1978. Coleoptera. JohnB. (ed.), Animal cytogenetics, vol. 3 Insecta 5. Borntraeger, Berlin: 366 pp.
Takhtajan, A., 1969. Flowering plants. Origin and dispersal. Oliver & Boyd, Edinburgh: 310 pp.
Virkki, N., 1984. Chromosomes in evolution of Coleoptera. In: Sharma, A. K. & Sharma, A. (eds), Chromosomes in evolution of eukaryotic groups. C.R.C. Press, Boca Raton, Florida, vol. 2: 41–76.
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Segarra, C., Petitpierre, E. Chromosomes of sixteen European species ofLongitarsus flea-beetles (Coleoptera, Chrysomelidae). Genetica 76, 203–208 (1988). https://doi.org/10.1007/BF00140225
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DOI: https://doi.org/10.1007/BF00140225