释义 |
elytronenUK elytronel·y·tron E0099000 (ĕl′ĭ-trŏn′)n. pl. el·y·tra (-trə) Either of the leathery or chitinous forewings of a beetle or a related insect, serving to encase the membranous hind wings used in flight. Also called wing case. [New Latin, from Greek elutron, sheath; see wel- in Indo-European roots.] el′y·troid′ (-troid′) adj.elytron (ˈɛlɪˌtrɒn) or elytrumn, pl -tra (-trə) (Zoology) either of the horny front wings of beetles and some other insects, which cover and protect the hind wings[C18: from Greek elutron sheath, covering] ˈelyˌtroid, ˈelytrous adjel•y•tron (ˈɛl ɪˌtrɒn) n., pl. -tra (-trə). one of the pair of hardened forewings of certain insects, as beetles, forming a protective covering for the rear wings. [1745–55; < New Latin < Greek élytron literally, cover, case, akin to eilýein to enfold, wrap] el′y•trous (-trəs) adj. elytronWhen closed, the elytron protects the hind wing. The elytra are opened for flight.el·y·tron (ĕl′ĭ-trŏn′) Plural elytra Either of the modified forewings of a beetle or related insect that encase the thin hind wings used in flight.ThesaurusNoun | 1. | elytron - either of the horny front wings in beetles and some other insects which cover and protect the functional hind wingswing casewing - a movable organ for flying (one of a pair) | TranslationsElytronenUK
elytron[′el·ə‚trän] (invertebrate zoology) One of the two sclerotized or leathery anterior wings of beetles which serve to cover and protect the membranous hindwings. A dorsal scale of certain Polychaeta. Elytron one of the anterior wings that in most insects cover the posterior wings when the latter are folded along the dorsal wall of the body. Beetles have thickened elytra with practically no evidence of venation. The elytra of the Dictyoptera and Orthoptera are leathery and have noticeable or pronounced venation. Some insects, such as earwigs, have veinless elytra. In bedbugs, only the base of each elytron is thickened; the tip is membranous. Elytra that are particularly thick no longer function as active organs of flight, becoming merely carrying surfaces (as in the June beetle), or play no role in flight at all (for example, the Cetonia). Many beetles in desert regions have greatly reduced posterior wings, and their elytra, as a rule, have fused to form a solid cover over the abdomen. The cavity under the elytra is exposed to the external atmosphere by a small opening at the top of the abdomen. Spiracles open into the cavity; the air in the cavity is heavily saturated with water vapor to minimize water loss during respiration. In many water beetles, for example the Dytiscidae, the cavity stores air, which the beetle can breathe as it swims through the water. M. S. GILIAROV elytronenUK
elytron (ĕl′ĭ-trŏn′)n. pl. ely·tra (-trə) Either of the leathery or chitinous forewings of a beetle or a related insect, serving to encase the membranous hind wings used in flight. Also called wing case. el′y·troid′ (-troid′) adj.elytronenUK
Synonyms for elytronnoun either of the horny front wings in beetles and some other insects which cover and protect the functional hind wingsSynonymsRelated Words |