Decapod anatomy 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 groups these may be reduced or missing. They are, from head to tail: The head also bears the (usually stalked) compound eyes. The distal portion of a mandible or maxilla which has a sensory function is known as a palp. Maxillipeds are appendages modified to function as mouthparts. Particularly in the less advanced decapods, these can be
Straight-billed hermit Straight-billed hermit The straight-billed hermit ("Phaethornis bourcieri") is a species of bird in the family Trochilidae, the hummingbirds. It is found in the Guyanas of Guyana, Suriname, and French Guiana; also the northern Amazon basin of Brazil, and Amazonian Colombia, Ecuador, and Peru; it is in eastern Venezuela and the Orinoco River Basin. Its natural habitats are subtropical or tropical moist lowland forest and subtropical or tropical moist montane forest. Two subspecies are currently recognised: "P. b. bourcieri" and "P. b. major". However, recent molecular analysis has shown that "P. b. major" is more closely related to "Phaethornis philippii" and