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The grasshopper Podisma sapporensis consists of two main chromosome races in Hokkaido. The western group of populations of P. sapporensis, belonging to the XO race, has a diploid number of chromosomes 2n=23 in the male and 2n=24 in the female (sex determination XO male/XX female). The eastern group of populations of this species, belonging to the XY race, differs from the western one as a result of...
The results of comparative karyotypical studies of the Caelifera orthopteran insects from Russia, Kazakhstan, Central, Asia and the Caucasus are summarized. Chromosome complements for 166 species belonging to the families: Eumastacidae (subfamily Gomphomastacinae; 2n male=19,21), Tetrigidae (2n male=13), Acrididae (2n male=23, 22, 21, 19, 17, 16), Pyrgomorphidae (2n male=19), and Pamphagidae ...
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