tagma

Major division of body (e.g., head, thorax, abdomen), each composed of varying number of somites. (Pl. tagmata) [McLaughlin, 1980].

Major division of body (e.g., head, thorax, abdomen), each composed of varying number of somites [Moore and McCormick, 1969].

(Order Cladocera):

Major division of body. Typically a head and trunk are distinguished, although the body may be considered to consists of head, thorax, abdomen, and postabdomen. Fully developed carapace covers only trunk [Stachowitsch, 1992].

(Order Notostraca):

Major division of body (head, thorax, abdomen) [Stachowitsch, 1992].

(Order Diplostraca):

Major division of body (head, trunk). Both tagmata are covered by carapace [Stachowitsch, 1992].

(Order Anostraca):

Major division of body (head, thorax, abdomen). (See also trunk) [Stachowitsch, 1992].

(Class Cephalocarida):

Major division of body (cephalon, thorax, abdomen). (See also trunk) [Stachowitsch, 1992].

(Order Tanaidacea):

One of three major divisions of body (according to interpretation: head, thorax, pleon = abdomen; head, pereon, pleon; cephalothorax, pereon, pleon) [Stachowitsch, 1992].

(Order Decapoda):

Major division of body (cephalothorax, abdomen) [Stachowitsch, 1992].

(Order Amphipoda):

One of three major divisions of body (cephalon = head, pereon, abdomen = pleon). See: cephalothorax [Stachowitsch, 1992].

(Order Isopoda):

One of three major divisions of body (cephalon, pereon, pleon). See: cephalothorax [Stachowitsch, 1992].

(Order Mysida):

One of basically three major divisions of body (head, thorax, abdomen). (See also cephalothorax) [Stachowitsch, 1992].

(Order Stomatopoda):

Major division (cephalon, thorax, abdomen) of body [Stachowitsch, 1992].

(Order Leptostraca):

Major division of body (cephalon, thorax, abdomen) [Stachowitsch, 1992].

(Subclass Branchiura):

Major division of body. According to interpretation, one may distinguish either cephalothorax and abdomen or head (cephalon), pereon, and abdomen (pleon) [Stachowitsch, 1992].

(Subclass Cirripedia):

Major division of body (head, thorax; in ascothoracican, head, thorax, abdomen) [Stachowitsch, 1992].

(Subclass Copepoda):

A major region of the body defined by a common function [Boxshall and Halsey, 2004].

(Subclass Mystacocarida):

Major division of body. According to interpretation, one may distinguish either head (cephalon), maxillipedal somite, and thoracoabdomen or head, thorax, and abdomen [Stachowitsch, 1992].

(Class Ostracoda):

Major division of body (cephalosome, metasome, and urosome, or prosome (cephalosome + metasome) and urosome) [Stachowitsch, 1992].

(Superorder Syncarida):

One of three major divisions of body (head, thorax, abdomen) [Stachowitsch, 1992].

(Order Thermosbaenacea):

One of three major division of body (cephalon, thorax, abdomen) [Stachowitsch, 1992].

(Order Euphausiacea):

One of two major divisions of body (cephalothorax, abdomen) [Stachowitsch, 1992].