[1][2] The specific name, jasoni, is in honor of John Jason Gathorne-Hardy, who is a British zoologist and artist.

[2] The preferred natural habitat of M. jasoni is forest, at altitudes of 1,768–1,981 m (5,801–6,499 ft).

[1] M. jasoni may attain a total length (including tail) of 75.2 cm (29.6 in).

It has smooth dorsal scales, which are arranged in 15 rows at midbody.

[2] Dorsally it is black with two orange stripes, and ventrally it is bright yellow (Vogel & David, 1999).