Noun
English Wikipedia has an article on:metasomaWikipedia
metasoma (plural metasomas)
(entomology) The posterior part of the body of an arthropod.
Metasoma The metasoma (the "abdomen") of the ant houses important internal organs, including those of the reproductive, respiratory (tracheae), and excretory systems. Source: Internet
The mouth is between segments two and three. citation The opisthosoma consists of twelve or fewer segments that originally formed two groups, a mesosoma of seven segments and a metasoma of five, terminating with a telson or spike. Source: Internet
The body of a scorpion is divided into two parts ( tagmata ): the head ( cephalothorax ) and the abdomen ( opisthosoma ), which is subdivided into a broad anterior ( mesosoma ), or preabdomen, and a narrow taillike posterior ( metasoma ), or postabdomen. Source: Internet