Crustacean anatomy

thumb|Collection of hemolymph from a worker honeybee.

upright=1.4|thumb|right|Diagram highlighting the telson of the prawn Litopenaeus setiferusthumb|Telson (arrow no. 3) of the horseshoe crab Carcinoscorpius rotundicauda

right|thumb|222px|Diagram showing the location of the Cephalon (arthropod head)|cephalon, [[thorax and pygidium of a trilobite.]] The pygidium (: pygidia) is the posterior body part or shield of crustaceans and some other arthropods, such as insects and the extinct trilobites. In groups other than insects, it contains the anus and, in females, the ovipositor. It is composed of fused body segments, sometimes with a tail, and separated from thoracic segments by an articulation.

one of two pairs of structures on arthropod heads

thumb|upright=1.3|The tail of Nephrops norvegicus – the uropods flank the [[telson; a diaeresis is visible on the exopod (outer part) of each uropod.]] Uropods are posterior appendages found on a wide variety of crustaceans. They typically have functions in locomotion.

anatomical structure in peracarid crustaceans

The entire structure of a decapod crustacean