The abdomen ( the opisthosoma ) is gray with white lateral stripes and various dark and light patches on the sides and the upper surface.
42.
Dalman and Lucas ( 2015 ) interpreted these regions as imprints of the chelicerae, prosoma, and opisthosoma, respectively, of a chelicerate arthropod.
43.
The heavy-bodied abdomen ( or opisthosoma ) exhibits a narrow " pedicel ", or waist, where it attaches to the prosoma.
44.
Posterior to the trunk is the short metamerically segmented opisthosoma, bearing external paired chaetae, which apparently help to anchor the animal to the base of its tube.
45.
Curculioidids, by contrast, have an opisthosoma without obvious tergites, but with a single median sulcus; a dividing line running down the middle of the back.
46.
The opisthosoma terminates in a long caudal spine, commonly referred to as a telson ( though this same term is also used for a different structure in crustaceans ).
47.
"V . praemandibularis " males have an orange carapace with bronze iridescent hairs on the cephalus, and an orange opisthosoma with a dark brown median stripe.
48.
Their bodies are covered with a tough cuticle, but do not contain any crystalline biominerals, and are divided into an anterior prosoma and a posterior opisthosoma, or abdomen.
49.
In those Arachnida that have two tagmata, but not usually in the Crustacea, the abdomen also is called the opisthosoma, meaning the after-part of the body.
50.
In Malacostraca, it is on the sixth thoracic segment; in Symphyla it is on the fourth trunk segment; in arachnids, it is on the second segment of the opisthosoma.
