Enchanted Learning shows a diagram and descriptive terms of parts. A more detailed diagram is at Amateur Entomologists' Society. Both of these webpages have good elementary information.
Google's hits for millipede images show some atop hands and other body parts (cringe). For sizes, one image that surprised me greatly showed someone using both hands to hold one. On the other hand (grin), one image shows a millipede on a finger, and another shows one with a penny.
Enchanted Learning shows a diagram and descriptive terms of parts. EL's millipede diagram is much more detailed than for the centipede. Amateur Entomologists' Society's diagram is similar to its centipede one.
The University of Bristol's 'Morphology" webpage has a really detailed image and scholastic explanation of anatomy. (The home page "Diplopoda" provides overview of millipedes.) BTW, "Chilopoda" is the term for centipedes, but U of Bristol doesn't have a special section for it. That is, replacing the URL part "chilopoda" for "diplopod" yields a not-found page.
My section about centipedes is short and the millipedes section only a bit longer. The most interesting information might be contrasts between the two creepy crawlies.
Centipede vs Millipede
A big difference in looks between these bugs is the number of legs per segment. Centipedes have one pair, and millipedes have two pairs. One helpful image with side by side drawings and descriptors is at the "Centipede vs. Millipede" section of "Top 10 Facts About Millipedes"..
In seeing so many Google image hits for millipedes where people handle them, I sensed that centipedes might be less receptive to handling than millipedes. Maybe another reason. Centipedes bite. "Millipedes of Petroglyph" provides a section for differentiating the two animals, and especially warning about the centipede's capability to bite and hurt. For a video featuring someone capturing one of each and explaining differences, view "Millipede vs Centipede!".
Additional sites that contrast these two members of Myriapoda (many-legged) subphylum—
- "Millipedes Vs Centipedes"
- "Millipedes or Centipedes"
- "Centipedes & Millipedes"
- "Centipedes vs. Millipedes?"
- "Which is Which?" portion of "GIANT AFRICAN MILLIPEDE"