Department of Zoology, Kurukshetra University, Kurukshetra-136 119, Haryana, India
* Corresponding author's E-mail: abyzkuk@gmail.com
Online published on 24 January, 2012.
Three species of genus Onthophagus viz. O. catta Fabr., O. falsus Gill, O. bonasus Fabr. displayed a male meio-formula 9AA + Xy with 2n = 20 chromosomes. The fourth species Sisyphus neglectus Gory presented meio-formula of 7AA + Xyp with 2n = 16 chromosomes. O. falsus and Sisyphus neglectus are new additions to the cytological data of beetles.