Summary
The metaphase chromosome set ofDrosophila silvestris Basden, a species of theobscura group, is described. From preparations of larval brains it was found that the diploid cell contains twelve chromosomes — five pairs of autosomes (2 V's, 2 rods, 1 dot) and heteromorphic X and Y (V- and J-shaped respectively).
Some internal characters of the adult have also been described.
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Basden, E. B.: The distribution and biology ofDrosophilidae (Diptera) in Scotland, including a new species of „Drosophila“. Trans. Roy. Soc. Edinburgh62, 603–654 (1954).
Buzzati-Traverso, A.: Genetica di popolazioni inDrosophila. II. I cromosomi di 5 specie del “gruppo obscura” e la incrociabilita' di varie razze geografiche. Sci. Genet. (Torino)2, 224–241 (1942).
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Knight, G.R. Chromosome number and morphology ofDrosophila silvestris basden — With a descriptive note on the internal genitalia of the adults. Z.Ver-erbungslehre 87, 439–442 (1956). https://doi.org/10.1007/BF00737162
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DOI: https://doi.org/10.1007/BF00737162