Arthrogastra

• (n. pl.) A division of the Arachnida, having the abdomen annulated, including the scorpions, harvestmen, etc.; pedipalpi.
Found on http://thinkexist.com/dictionary/meaning/arthrogastra/

Arthrogastra

Ar`thro·gas'tra noun plural [ New Latin , from Greek 'a`rqron joint + ... stomach.] (Zoology) A division of the Arachnida, having the abdomen annulated, including the scorpions, harvestmen, etc.; pedipalpi.
Found on http://www.encyclo.co.uk/webster/A/125
No exact match found