The epicuticle is the outermost portion of the
exoskeletonof an insect(and various other arthropods); its exact composition and structure may differ somewhat among different taxa, but certain aspects can be generalized:
* It is secreted by the epidermis, and is deposited on top of the
procuticlevia pores that pass outwards through the procuticle from the epidermal cells.
* It contains no
chitin, and is itself arranged in layers.
* The layers typically consist of an inner epicuticle, an outer epicuticle (or cuticulin layer), a wax layer, and a cement layer.
* The wax layer is not present in all arthropods, as its primary function is to reduce water loss.
* The epicuticle cannot be digested during the molting cycle (see
ecdysis), so it and the exocuticle are shed.
Wikimedia Foundation. 2010.
Look at other dictionaries:
epicuticle — noun Date: 1929 the outermost waxy layer of the arthropod exoskeleton • epicuticular adjective … New Collegiate Dictionary
epicuticle — См. epicuticula … Dictionary of invertebrate zoology
epicuticle — /ep i kyooh ti keuhl/, n. the thin, waxy outer layer of the insect exoskeleton. [1925 30; EPI + CUTICLE] * * * … Universalium
epicuticle — noun The outermost portion of the exoskeleton of an insect or arthropod … Wiktionary
epicuticle — epi·cu·ti·cle (ep″ĭ kuґtĭ kəl) [epi + L. cuticula] the thin, flexible, colorless, outermost layer of the exoskeleton of certain crustaceans and arthropods, composed of wax and cuticulin … Medical dictionary
epicuticle — epi·cuticle … English syllables
epicuticle — ep•i•cu•ti•cle [[t]ˌɛp ɪˈkyu tɪ kəl[/t]] n. anat. ent the thin, waxy outer layer of the insect exoskeleton • Etymology: 1925–30 … From formal English to slang
epicuticle — … Useful english dictionary
arthropod — /ahr threuh pod /, n. 1. any invertebrate of the phylum Arthropoda, having a segmented body, jointed limbs, and usually a chitinous shell that undergoes moltings, including the insects, spiders and other arachnids, crustaceans, and myriapods. adj … Universalium
Arthropod — Temporal range: 540–0 Ma … Wikipedia