segment

Division of an appendage [Perez Farfante and Kensley, 1997].

Individual component of crustacean limb connected by movable articulation with adjoining segments. (Syn. podomere (not equivalent to somite, though used by some authors in this sense). (not joint.)) [Moore and McCormick, 1969].

Individual component of curstacean appendage connected by movable articulation with adjoining segments. (Syn. podomere) See: article [McLaughlin, 1980].

(Class Cephalocarida):

One in a series of units of appendage (then also termed article or joint). May also refer to segment of body (then also termed somite). Shape and number of setae of appendage segments are of taxonomic importance [Stachowitsch, 1992].

(Order Cumacea):

One in a series of divisions of an appendage. May also refer to segment of body (then also termed somite). Segments of flagella of antennule or antenna often termed articles. (Syn. article, joint) [Stachowitsch, 1992].

(Order Decapoda):

One in a series of units of an appendage, e.g., coxa, basis, ischium, merus, carpus, propodus, and dactylus of pereopod. May also refer to segment of body (then also termed somite). Segments of flagella of antennule or antenna are often termed articles. (segment of pereopod: not subdivided, subdivided = many-jointed = multiarticulate; compressed, cylindrical, flattened, obcordate, prismatic, subcubical, subcylindrical, subquadrate; bispinose, ciliate, granulate, rugose, serratogranulate, smooth, spinous, spinulose, with crest) [Stachowitsch, 1992].

(Order Mysida):

Segment of body or appendage, those of former often being termed somites. Segments of flagella of antennules, antennae, or thoracic exopods often termed articles [Stachowitsch, 1992].

(Order Stomatopoda):

One in a series of divisions either of body (also termed somites) or appendage. Segmetns of flagella at tip of antennules or antennae are often termed articles [Stachowitsch, 1992].

(Order Leptostraca):

One in a series of divisions of an appendage. May also refer to segment of body (then also termed somite). Segments of flagella of antennule or antenna are often termed articles [Stachowitsch, 1992].

(Subclass Branchiura):

One in a series of units of an appendage (e.g., coxa, basis). May also refer to segment of body (then also termed somite) [Stachowitsch, 1992].

(Subclass Copepoda):

A composite group of elements which are serially repeated components of a limb; these elements usually include formation and post-formation setae, muscles, and a finishing arthrodial membrane [Ferrari and Dahms, in press].

(Subclass Copepoda):

An article or division of an appendage separated from the next such article by an articulation [Boxshall and Halsey, 2004].

(Subclass Mystacocarida):

One in a series of units of appendage. May also refer to segment of body (then also termed somite) [Stachowitsch, 1992].

(Class Ostracoda):

One in a series of units of appendage (e.g. coxa, basis) or of branch (endopod, exopod) of appendage. (Syn. podomore) [Stachowitsch, 1992].

(Class Ostracoda):

One in a series of units of appendage (e.g., coxa, basis). May also refer to segment of body (then also termed somite). Segments of flagella of antennules are termed articles. (cylindrical, flattened; setose, smooth, spinose, spinulose) [Stachowitsch, 1992].

(Class Remipedia):

One in a series of divisions of body. Typically refers to one of approximately 30 trunk segments, the first being partially fused to cephalon, the last being reduced and partially fused to anal segment. Each trunk segment consists of dorsal tergite and ventral sternite, is produced laterally into pleurite, and bears pair of biramous appendages. May also refer to segment of limb. (See also article) [Stachowitsch, 1992].

(Order Thermosbaenacea):

Segment of body or appendage, those of the former often termed somites. Segments of flagella of antennules or antennae often termed articles [Stachowitsch, 1992].