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5 Fun Differences Between Centipedes & Millipedes

Centipedes & Millipedes both belong to the group “Myriapoda“, under the phyllum “Arthropoda“, which includes spiders, crustaceans and insects. We know they have a seemingly never-ending number of legs, with one having more legs than the other (20-350 legs in centipedes & 40-750 in millipedes). But is that the only difference between them? 

5 differences you didn’t know existed between centipedes & millipedes 

  1. Centipedes are flat, while millipedes are cylindrical. Centipedes are yellow-gray in colour, while millipedes are reddish-brown or black in colour.
  2. Centipedes have a single pair of legs in each segment/section of their bodies. Millipedes have two pairs of legs in each segment/section of their bodies. Centipedes’ legs are spread outwards and away from their body, towards their side. Millipedes’ legs are directly under them. 
  3. Centipedes are venomous, whereas millipedes are not. 
  4. Speaking of venom, centipedes use highly-toxic venom like hydrogen cyanide or hydrochloric acid to injure, immobilise and hunt small prey like insects, worms and in the case of the Venezuelan giant centipede, bats. Millipedes on the other hand, are predominantly vegetarians, dining on decaying leaves and rotten tree bark. They only eat insects if they are easily available and the millipedes don’t need to expend too much energy catching them. 
  5. Centipedes die if they don’t find a wet and moist place to live, whereas millipedes are quite versatile and can adapt to any environment – dry or moist. That leggy arthropod that just crawled out of your kitchen sink – that’s a centipede. It’s cousin you see scuttling around inside the storage boxes and wall cracks in the basement – that’s a millipede. 

 

Bonus

During mating, centipede males leave bundles of sperm next to female centipedes and move away. The females use these bundles only when they find the perfect nest to lay the fertilized eggs (if the timing isn’t right, female centipedes store these sperm bundles for a better day). Millipede males & females on the other hand, engage in sexual intercourse to reproduce. Male millipedes have been observed giving “massages” to females to get them in the mood for sex. 

 

Video: Centipede vs Millipede

 

 

-NISHA PRAKASH 

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