Decapod anatomy are referred to as the "gonopods". At the end of the pleon is the tail fan, comprising a pair of biramous uropods and the telson, which bears the anus. Together, they are used for steering while swimming, and in the caridoid escape reaction. In crabs and some other carcinised decapods, the abdomen is folded under the cephalothorax. Decapod anatomy The decapod crustacean, such as a crab, lobster, shrimp or prawn, is made up of 20 body segments grouped into two main body parts, the cephalothorax and the pleon (abdomen). Each segment may possess one pair of appendages, although in various
Long-tailed hermit Long-tailed hermit The long-tailed hermit ("Phaethornis superciliosus") is a large hummingbird that is a resident breeder in Venezuela, the Guianas, and north-eastern Brazil. This species is commonly referred to as the eastern long-tailed hermit, but it is likely, following recommendations from Gary Stiles in February 2006, that the new name will be adopted by most authorities. The taxonomic history of this group is complicated, with similar hermit populations from both sides of the Andes being originally classed as a single long-tailed hermit species. The western population was then split as the western long-tailed hermit, "P. longirostris", leading to the renaming