Cytological and karyological observations on two endemic giant pill-millipedes Arthrosphaera (Pocock 1895) (Diplopoda: Sphaerotheriida) of the Western Ghats of India

  title={Cytological and karyological observations on two endemic giant pill-millipedes Arthrosphaera (Pocock 1895) (Diplopoda: Sphaerotheriida) of the Western Ghats of India},
  author={Cheviri Nair Ambarish and Kandikere Ramaiah Sridhar},
  pages={49 - 56}
Cytological features and karyomorphology of two endemic giant pill-millipedes (Arthrosphaera fumosa and A. magna) of the Western Ghats were studied based on the meiotic cell divisions using Giemsa staining technique. Different meiotic stages of spermatogonial cell divisions were compared and karyotypes were constructed from the metaphase stages. The diploid chromosome number, 2n = 30, in A. fumosa as well as A. magna with XY sex determination system was seen. Most of the meiotic chromosome… 



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The current phylogeny of Giant Pill‐Millipede families mirrors perfectly the suggested break‐up of Gondwana fragments 160–90 Ma, and no evidence for a dispersal event could be found, highlighting the importance of Giantpill‐millipedes as a potential model taxon.

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