Zoosphaerium neptunus

Zoosphaerium neptunus, also known as the giant emerald pill millipede, is a species of millipede within the family Arthrosphaeridae. Its size is an example of island gigantism, it being the largest known pill-millipede in the world, with some individuals reaching a maximum length of 90 mm (3.5 inches) long. The species is endemic to Madagascar, where it is known to swarm at certain times of the year. Z. neptunus is the only known species within the order Sphaerotheriida that is known to exhibit this mass swarming behaviour.

Zoosphaerium neptunus
Scientific classification
Domain: Eukaryota
Kingdom: Animalia
Phylum: Arthropoda
Subphylum: Myriapoda
Class: Diplopoda
Order: Sphaerotheriida
Family: Arthrosphaeridae
Genus: Zoosphaerium
Species:
Z. neptunus
Binomial name
Zoosphaerium neptunus
(Butler 1872)
Distribution of Zoosphaerium neptunus
Synonyms
    • Sphaerotherium digitale De Saussure & Zehntner, 1902
    • Sphaerotherium neptunus Butler, 1872
    • Sphaerotherium pygidiale Saussure & Zehntner, 1897
    • Zoosphaerium digitale (De Saussure & Zehntner, 1902)
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