pleomere

See: abdominal somite [Martin, 2005].

See: abdominal somite [McLaughlin, 1980].

(Order Tanaidacea):

One of six segments (somites) of abdomen (pleon). Last (sixth) or last two (fifth and sixth) pleomeres fused to telson to form pleotelson. First five pleomeres typically bear pleopods; last pleomere bears uropods. (Syn. pleonite) [Stachowitsch, 1992].

(Order Decapoda):

One of six segments (somites) of abdomen (pleon); each bears pair of appendages (pleopods). Last pleomere bears uropods and is followed by telson. (Syn. pleonite, abdominal somite) [Stachowitsch, 1992].

(Order Amphipoda):

One of six segments (somites) of abdomen (pleon). Each pleomere bears appendages (pleopods). If abdomen is subdivided into anterior pleosome and posterior urosome, then posterior three somites may be termed urosomites [Stachowitsch, 1992].

(Order Isopoda):

Pleonite [Stachowitsch, 1992].

(Order Mysida):

One of six segments (somites) of abdomen. Each pleomere may bear pair of appendages, those of first five being termed pleopods, those of sixth termed uropods [Stachowitsch, 1992].

(Order Stomatopoda):

One of six segments (somites) of abdomen; each bears pair of appendages (pleopods). Last (sixth) somite bears uropods and is followed by telson. (See also pleotelson) [Stachowitsch, 1992].

(Order Leptostraca):

One in a series of seven segments (somites) of abdomen, the first four bearing well-developed appendages (pleopods), the fifth and sixth with reduced appendages. Bears telson posteriorly. (Syn. abdominal somite) [Stachowitsch, 1992].

(Class Ostracoda):

One of five segments (somites) of abdomen. First pleomere termed genital somite, last pleomere termed anal somite. Lacks appendages. (See also urosomal segment). (Syn. abdominal somite) [Stachowitsch, 1992].

(Superorder Syncarida):

One of basically six segments (somites) of abdomen. Anterior five may bear pleopods, with last (sixth) pleomere bearing uropods, In bathynellacean. Last pleomere is fused with telson to form pleotelson. (anaspidacean: body flexed/not flexed at first pleomere) [Stachowitsch, 1992].

(Order Thermosbaenacea):

One of six segments (somites) of abdomen. Last pleomere may be fused to telson to form pleotelson. First two pleomeres bear pleopods, with last pleomere bearing uropods. (Syn. pleonite) [Stachowitsch, 1992].

(Order Euphausiacea):

One of six segments (somites) of abdomen. Each pleomere bears pair of appendages, those of first five being termed pleopods, those of sixth being termed uropods. Last pleomere bears posterior telson. (smooth, with dorsal spine, with dorsal keel) [Stachowitsch, 1992].