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
White-browed hermit the very similar Reddish Hermit ("Phaethornis ruber") which generally occurs at lower elevations, and identification criteria between the two species is still not well known. White-browed Hermit may be slightly paler with more bronze coloration in the tail. The range extends along the base of the Andes from central Peru south to central Bolivia, in an elevational band from 350 m to 1400 m. The species is generally encountered most often within forest interior, although individuals occasionally forage along forest edge. Like most hummingbirds, it feeds mostly on nectar from a variety of flowers, but also consumes some small insects.