Results and discussion
Independence ofthe Ochotona huangensis taxon was suggested by molecular studies (Yu et al. 2000, Niu et al. 2004), but the morphological revision of specimens used in these articles was never done, so we can stick to only one fact. Our data of the molecular express analysis showed that the sequence of our specimen had maximum similarity to that sequence of specimen which was identified as Ochotona huangensis by Yu (2000) (Fig. 1).
According to the results of counting on 40 metaphase plates, the diploid chromosome number of Ochotona huangensis is 42 (NFa=80). Morphologically two groups of autosomes were identified. The first group consists of 15 pairs (3 large, 8 medium and 4 small) meta-submetacentric chromosomes. The second group consists of 5 pairs rather large, gradually decreasing in size, subtelocentric chromosomes. The X chromosome is a medium sized submetacentric, the Y chromosome is a small acrocentric (Fig. 2a).