GLOSSARY 



COPULATORY STYLET. Structure situated on endopod of pleopod 2 in males, 



used for transfer of spermatophore in some species; also referred to as appendix 



masculina. 

 CORDATE. Heart shaped in outline. 

 COXA. Basal article of an appendage, attached to sternite, sometimes expanded 



into a lateral coxal plate. 

 CRENULATE. Having a scalloped edge with rounded teeth, usually used to refer 



to the margin of a structure. 

 DACTYLUS. Terminal (7th) article of a pereopod or thoracic appendage. 

 DENTATE. Edged with teeth. 

 DENTICLE. A small tooth. 

 DENTICULATE. Having fine teeth. 

 DIGITIFORM. Fingerlike. 



DISTAL. Situated away from the base or point of origin or attachment. 

 ECDYSIS. Molting of the integument. 

 EMARGINATE. Having the margin concave. 

 ENDITE. Medially directed lobe of coxa or basis of an appendage, especially the 



maxilliped. 

 ENDOPOD. Inner ramus of a biramous appendage. 



ENTIRE. Complete; usually referring to the margin of a structure that is smooth. 

 EPIMERON. Lateral part of a somite. 

 EPIPOD. Lateral extension of a protopodite. 

 EXCAVATE. Hollowed out. 

 EXOPOD. Outer ramus of a paired appendage. 

 FALCATE. Sickle shaped; curved and tapering to a point. 

 FLAGELLUM. Distal part of antenna or antennule, usually multiarticulate, 



occasionally reduced to one or a few articles. 

 FRONTAL LAMINA. Platelike structure of the cephalon immediately anterior to, 



and sometimes fused with, clypeus. 

 GENICULATE. Bent at an abrupt angle, as in the body of many arcturid isopods. 

 GRANULATE. Having the appearance of bearing beadlike or grainlike 



protuberances; usually applied to the description of a surface. 

 HIRSUTE. Bearing hairs (elongate hairs in the case of most isopods). 

 HYPOGEAN. Underground. 



IMMERSED. Sunken into, as with one structure into another. 

 INCISOR. Cutting process of the mandible, usually dentate, sometimes modified 



for piercing. 

 INDURATE. Hardened, usually by calcium carbonate or sclerotized protein. 

 INTEGUMENT. Outer covering, e.g., the exoskeleton. 

 INTERSTITIAL. Relating to interstices; living in the interstices of sand grains, 



gravel, or rubble. 

 ISCHIUM. Article 3 of pereopod. 



LABIUM. Lower lip; usually consisting of a pair of lobes posterior to the mouth. 

 LABRUM. Unpaired projection anterior to mouth, attached to the clypeus; upper 



lip. 

 LACINIA MOBILIS. Small, usually toothed, process articulating at base of incisor 



in left or both mandibles. 

 LAMELLAR. In the shape or structure of a thin plate or lamella. 



