Python Millipede

Nyssodesmus python

"Nyssodesmus python" also known as the python millipede or large forest-floor millipede is a species of flat-backed millipede of the family Platyrhacidae commonly found in Costa Rica, where it occurs widely and is locally abundant in the Caribbean slopes from sea level to around 365 meters in elevation.
Python Millipede (Nyssodesmus python) Had I trodden on this 4 inch millipede as I made my way through the rainforest, it's very possible it would have carried on its merry way, after I had passed by.

How so? 

Find out by reading the accompanying commentary to this video: https://www.youtube.com/watch?v=_TYRurdtomY Costa Rica,Geotagged,Nyssodesmus python,Winter

Appearance

Individuals reach lengths of up to 10 cm, and are conspicuously colored in yellowish tan with brown or black stripes. Their appearance is sometimes likened to a human spine. These millipedes are often encountered in pairs, with the male straddling the back of the female long after mating, to prevent other males from fertilizing the female's eggs before she lays them.

References:

Some text fragments are auto parsed from Wikipedia.

Taxonomy
KingdomAnimalia
DivisionArthropoda
ClassDiplopoda
OrderPolydesmida
FamilyPlatyrhacidae
GenusNyssodesmus
Species
Photographed in
Costa Rica