The spirobolid millipedes is from a phylum or arthropoda, subphylum of myriapoda, class of diplopoda and order of spirobolida.
This order is distinguished by the presence of distinct pleurites on each body segment, just above the legs, and a pronounced suture that runs vertically down the front of the head. Both pairs of legs on the seventh segment of the male are modified into gonopods. Spirobolidans are smooth, cylindrical millipedes with 35-60 body segments in adults. They can be distinguished from similar-looking spirostreptidans by the number of legs: spirobolidans have one pair on each of the first five body segments, two pairs on succeeding segments. They possess repugnatorial glands that produce defensive secretions, such as benzoquinones and hydroquinones, that may irritate and stain the skin. Species are often large and conspicuous, and sometimes brightly coloured and patterned.
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