Spirobolida | |
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Narceus americanus | |
Scientific classification ![]() | |
Domain: | Eukaryota |
Kingdom: | Animalia |
Phylum: | Arthropoda |
Subphylum: | Myriapoda |
Class: | Diplopoda |
Superorder: | Juliformia |
Order: | Spirobolida Bollman, 1893 |
Families | |
12: See text | |
Synonyms | |
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Spirobolida is an order of "round-backed" millipedes containing approximately 500 species in 12 families. [1] Its members are distinguished by the presence of a "pronounced suture that runs "vertically down the front of the head". [2] Most of the species live in the tropics, and many are brightly coloured. [2] Mature males have two pairs of modified legs, the gonopods, consisting of the 8th and 9th leg pair: the posterior gonopods are used in sperm-transfer while the anterior gonopods are fused into a single plate-like structure. [3]
The families are divided into two suborders: [1]
Suborder Spirobolidea
Suborder Trigoniulidea