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
Hermit thrush Hermit thrush The hermit thrush ("Catharus guttatus") is a medium-sized North American thrush. It is not very closely related to the other North American migrant species of "Catharus", but rather to the Mexican russet nightingale-thrush. The specific name "guttatus" is Latin for "spotted". This species measures in length, spans across the wings and weighs . Among standard measurements, the wing chord is , the bill is and the tarsus is . It is more compact and stockier than other North American "Catharus" thrushes, with relatively longer wings. The hermit thrush has the white-dark-white underwing pattern characteristic of "Catharus" thrushes. Adults