- Median; on or near the plane dividing the shrimp into two mirror image parts [Butler, T.H.].(Order Isopoda):At, near, or directed toward the middle or midline [Kensley and Schotte, 1989].
Crustacea glossary. Natural History Museum of Los Angeles County. 2011.
Look at other dictionaries:
maxilla — Appendage next behind maxillule serving functions in feeding and respiration. (Syn. second maxilla) [Moore and McCormick, 1969]. One of a pair of two sets gnathal appendages situated immediately posteroventral to mandibles [Hobbs and Jass, 1988] … Crustacea glossary
mandible — Most anterodorsally situated of gnathal appendages; one, of a pair, of heavily calcified jaws; the teeth. [Hobbs and Jass, 1988]. On of the heavily calcified jaws lying anterior to (beneath, in ventral view) the other mouth parts but visible in… … Crustacea glossary
cephalon — A term that refers to the head of a crustacean [Brusca and Brusca, 2002]. Anterior region of the body bearing the antennules, antennae, eyes, mandibles, maxillules, and maxillae [Holdich and Jones, 1983]. Anteriormost tagma, bearing eyes, mouth,… … Crustacea glossary
endite — ( ) [Holthuis, 1993]. Schematic drawing of a thoracic leg. [Holthuis, 1993] A mesial lobe like extension of a podomere or such an extension from the axial part of an unsegmented appendage [Hobbs, Hobbs, and Daniel 1977]. A non specific term to… … Crustacea glossary
head — See: cephalon [Martin, 2005]. (Order Cladocera): Anterior of two divisions (tagmata) of body (head, trunk); Consists of five somites bearing antennules, antennae, mandibles, maxillules, and (reduced) maxillae. Bears compound and naupliar eyes and … Crustacea glossary
protopod — Peduncle of an appendage; in unmodified form, consisting of one coxal and one basal article. (Syn. protopodite) [Williams, 1984]. Proximal portion of limb, consisting of precoxa, coxa, and basis, fused together in some forms; its distal edge… … Crustacea glossary
endopod — ( ) [Holthuis, 1993]. Schematic drawing of a thoracic leg. [Holthuis, 1993] Inner branch of biramous appendage, especially one arising from protopodite of pleopod [Butler, T.H.]. Inner of two branches of biramous limb, comprising ischium through… … Crustacea glossary
paragnath — See: labium, metastoma [Martin, 2005]. A pair of ventral projections of the cephalic cuticle just posterior and medial to the mandibles. Each projection has two lobes, a broad lamellar outer lobe with hair like setae on the inner margins and a… … Crustacea glossary
subesophageal ganglion — Anterior ganglion of the ventral nerve cord, located beneath (posterior to) the esophagus and connected dorsally to the tritocerebrum. (Syn. subenteric ganglion) [Brusca and Brusca, 2002]. Nerve plexus below esophagus in head of malacostracans… … Crustacea glossary
claw — a modified seta found on the distal segment of the walking legs that is heavily sclerotized and has a sharp tip [Wilson, 1989]. (Order Cladocera): Caudal ramus [Stachowitsch, 1992]. (Class Cephalocarida): One of up to several claw like… … Crustacea glossary