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Online Dictionary of Invertebrate Zoology: Complete Work - Best Text

Online Dictionary of Invertebrate Zoology: Complete Work - Best Text

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<strong>Online</strong> <strong>Dictionary</strong> <strong>of</strong> <strong>Invertebrate</strong> <strong>Zoology</strong> 351umbilicus.exumbrella n. [L. ex, out <strong>of</strong>; dim. umbra, shade] (CNID: Scyphozoa)The convex aboral surface <strong>of</strong> a medusa or jellyfish.see subumbrella.exuvia n.; n.pl. exuviae [L. exuvia, cast] The cast parts <strong>of</strong> thecuticle; cuticle shed at a molt; usually used only in theplural.exuvial glands Certain epidermal glands associated with themolting fluid during ecdysis at molting.exuvial space (ARTHRO: Insecta) An area between the epidermisand the cuticle into which the molting enzymes are secretedafter apolysis.exuviate v. [L. exuvia, cast] To cast skin or shell; to molt.eye n. [A.S. eage, eye] An organ <strong>of</strong> sight; a photoreceptor; acompound eye; an ocellus.eye-bridge (ARTHRO: Insecta) In Diptera, eyes dorsally joinedabove the antennae by a narrow line <strong>of</strong> facets.eye brush see prosartemaeye cap (ARTHRO: Insecta) In Lepidoptera, a structure overhangingor capping the compound eye.eyespots n.pl. [A.S. eage, eye; ME. spotte, spotted] Pigmentedareas in many invertebrates to which are attributedvarious functions: a simple eye or visual organ (ocellus);intimidation <strong>of</strong> predators; to deflect attention to the leastvulnerable parts <strong>of</strong> the body; a sensory organ.eyestalk see ocular peduncle

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