Cytogenetical analysis
S. anjanericus and S. bombayensis exhibited the somatic
count of 2n =20 chromosomes. The former species had chromosomes
with median region centromeres (10m) whereas in the latter nine pair had
median region centromeres (9m) and one pair a sub-median centromere
region (1sm). The karyotype was bimodal in both the species. Of the 10
pairs, two pairs were conspicuously larger than the remaining eight
pairs. The first pair was characterized by the presence of a secondary
constriction (Figs. 3–4). In S. anjanericus the secondary
constriction was on the short arm whereas in S. bombayensis it
was on the long arm. Comparative karyotypes of both the species are
given in Table 2.