E A Kachvorian

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Karyotypes of four species of blackflies belonging to plesiomorphic superspecific taxa, Prosimulium pronevitshae, P. frontatum, Stegopterna richteri, Greniera dogieli have been studied. Structural peculiarities of polythene chromosomes of the salivary glands in older larvae have been analysed. Banding patterns of polythene chromosomes and descriptions of(More)
Morphological and karyotypical features of a new blackfly species Cnetha akopi sp. n. from Armenia are described. Comparative analysis of the new species and four closely related endemic species from Caucasus is performed. Photographic maps of polythene chromosomes are provided.
Karyotypes of more than 120 species of 33 genera of the Palearctic blackflies (Simuliidae) were studied on squashed acetoorcein stained preparations of salivary gland polytene chromosomes in larvae. In the course of evolution of the family, a significant complication was noticed in the morphology of centromere regions of polytene chromosomes. In(More)
In the pupae of three populations of Testisimulium kondici (Bar.) the variations of nine quantitative characters are determined. The discrepancies between these populations are analyzed. With the help of statistical indices the specific distinctions of one of the studied populations from two others, which are not essentially different, is established.(More)
Eleven morphometric and four qualitative features of larvae, as well as 6 morphometric parameters of pupae of Odagmia caucasica, which had been collected in 5 geographically remote regions of Armenia, have been studied. In this work besides absolute values of features we have used their ratios (indices) that shows forms and proportions of different organs.(More)
Three blackfly Wilhelmia paraequina populations of Armenia (rivers Debet and Megriget, channel Megri) were studied. 2n = 6: IS + IIL, IIS + IL, IIIS + IIIL. Cytological maps of polytene chromosomes were constructed. High inversion polymorphism (95.63%) was observed, with 2.6 inversions per individual. Three inversions proved to be associated with male(More)
The structure of polytene chromosomes in the salivary gland of two hard for distinguishing species Eusimulium montium Rubz. and E. gviletense alizadei Djaf. was studied. The comparative-karyologic analysis of the taxons showed many common features in their karyotypes: complete conjugation of the homologous chromosomes in the connection between the length(More)
Karyotypes of 31 species of black flies belonging to 11 genera have been examined. The morphology of polytene chromosomes from salivary glands of larvae and mitotic chromosomes of gonads and ganglia have been studied. It was found that most species have 2n = 6, except the Eusimulium species, which have 2n = 4. Each species is characterised by a specific(More)
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