| 单词 | elytron |
| 例句 | One early idea that was proposed as an explanation is that beetles have hardened forewings, called elytra, that form a protective capsule over their flight wings. The Secret to Beetles’ Unfathomable Diversity 2023-09-27T04:00:00Z But there are more than a half-million known beetle species, and until now, all have had at least some form of hard forewing elytra. This ‘Alien’ Is Missing Something Found in Every Other Male Beetle 2023-07-08T04:00:00Z The elytra stabilize the beetle and its churning wings, preventing it from spinning. Tiny Flier ‘Swims’ through the Air at Superspeed 2022-03-21T04:00:00Z The elytra open for liftoff like gull-wing doors on a car, freeing the wings for flight. 11 Cool Things You Never Knew about Fireflies 2019-05-16T04:00:00Z And studying them was difficult because the elytra stay down and block the view during folding. Ladybugs Pack Wings and Engineering Secrets in Tidy Origami Packages 2017-05-18T04:00:00Z But the very biggest family of beetles continued to defy explanation because their elytra are highly reduced, and they don’t feed on plants. The Secret to Beetles’ Unfathomable Diversity 2023-09-27T04:00:00Z But it was missing one of the animal’s defining characteristics: the tough forewing casing known to scientists as the elytra. This ‘Alien’ Is Missing Something Found in Every Other Male Beetle 2023-07-08T04:00:00Z Speaking at the launch event, architect Achim Menges said the pavilion's design was inspired by fibrous structures found in nature - in this case, the hardened forewing of a flying beetle known as the elytra. Robot takes up residence to build V&A pavilion - BBC News 2016-05-18T04:00:00Z A group of beetles having short elytra, as the rove beetles. Webster's Unabridged Dictionary (2nd 100 Pages) 2012-03-24T02:00:19.387Z And during the process, tiny structures on the abdomen and elytra create friction to hold the hind wings in place. Ladybugs Pack Wings and Engineering Secrets in Tidy Origami Packages 2017-05-18T04:00:00Z For, commencing on the level of the beach, the usual type is broad, flat, more or less opake, with the prothorax almost impunctate, and the elytra soldered together. On the Variation of Species, with Especial Reference to the Insecta ; Followed by an Inquiry into the Nature of Genera 2012-01-17T03:00:21.933Z There is a very distinct scutellem, and the two elytra are rounded at the tip and without venation. Scientific American Supplement, No. 648, June 2, 1888. 2011-12-26T03:00:15.410Z It is not a voice that the crickets utter, but a regular vibration of musical chords, produced by nibbing the nervures of the elytra against a sort of network intended to produce the vibrations. Rambles of a Naturalist 2011-06-04T02:00:13.503Z In the beetles the anterior pair of wings becomes hardened so as to form protective cases for the posterior membranous wings, and are called in this condition 'elytra' or 'wing-cases'. The New Gresham Encyclopedia Volume 4, Part 2: Ebert to Estremadura 2011-04-14T02:00:56.200Z To fold, the elytra first close and align backward. Ladybugs Pack Wings and Engineering Secrets in Tidy Origami Packages 2017-05-18T04:00:00Z But perhaps its most singular character, and in which it differs from every other Harpalus with which I am acquainted, consists in the tendency of its elytra to become united or soldered together. On the Variation of Species, with Especial Reference to the Insecta ; Followed by an Inquiry into the Nature of Genera 2012-01-17T03:00:21.933Z The elytra, however, are comparatively long narrow structures which occupy a position in front of the wings, of which they may be regarded as forming the anterior parts. Encyclopaedia Britannica, 11th Edition, Volume 10, Slice 5 "Fleury, Claude" to "Foraker" 2011-04-03T02:00:20.883Z In Blethisa the transverse ridges on the furrowed border of the abdominal segment do not come into play, as far as I could judge, in scraping the rasps on the elytra. The Descent of Man and Selection in Relation to Sex, Vol. I 2011-01-17T03:00:49.523Z The generic characters are derived from the antennæ, the jaws, the head, the thorax, the wings, the elytra or wing-covers; and the specific, from the colours and other circumstances. Lives of Eminent Zoologists, from Aristotle to Linnæus with Introductory remarks on the Study of Natural History In a large number 669 of beetles of different families, stridulating areas occur on various segments of the abdomen, and are scraped by the elytra. Encyclopaedia Britannica, 11th Edition, Volume 6, Slice 6 "Cockaigne" to "Columbus, Christopher" The blood-red dashes, however, with which the elytra of numerous insects are adorned, I have constantly remarked possess a singular tendency to become evanescent. On the Variation of Species, with Especial Reference to the Insecta ; Followed by an Inquiry into the Nature of Genera 2012-01-17T03:00:21.933Z The elytra, moreover, are not wholly passive structures. Encyclopaedia Britannica, 11th Edition, Volume 10, Slice 5 "Fleury, Claude" to "Foraker" 2011-04-03T02:00:20.883Z These 379ribs are scraped by the posterior margins of the elytra, a small portion of which projects beyond the general outline. The Descent of Man and Selection in Relation to Sex, Vol. I 2011-01-17T03:00:49.523Z The Chlorion begins by cutting off the elytra, which maintain it rigid and prevent it from being compressed. The Industries of Animals Along the sutural border of the elytron, the chitinous lamella forms a tubular space within which are numerous glands. Encyclopaedia Britannica, 11th Edition, Volume 6, Slice 6 "Cockaigne" to "Columbus, Christopher" Moreover, Dugald had secured about fifty skins of the most lovely humming-birds, with many beetles, whose elytra, painted and adorned by Nature, looked like radiant jewels. Our Home in the Silver West A Story of Struggle and Adventure The elytra are to the delicate wings of some insects what the thick anterior margins are to stronger wings. Encyclopaedia Britannica, 11th Edition, Volume 10, Slice 5 "Fleury, Claude" to "Foraker" 2011-04-03T02:00:20.883Z When setting beetles or the like, this usually means pinning them through the right elytron. Practical Taxidermy A manual of instruction to the amateur in collecting, preserving, and setting up natural history specimens of all kinds. To which is added a chapter upon the pictorial arrangement of museums. With additional instructions in modelling and artistic taxidermy. The elytra are soldered at the median edge, so that it cannot spread its wings to fly. The Industries of Animals Sometimes the glands are found beneath the disk of the elytron, opening by pores on the surface. Encyclopaedia Britannica, 11th Edition, Volume 6, Slice 6 "Cockaigne" to "Columbus, Christopher" Their antennæ, which are club-shaped, terminated abruptly in a kind of button, and their elytra, which are a brilliant black, are crossed by a belt of yellow color. Adventures of a Young Naturalist At least four species of beetles appear to have been held in veneration and were distinguished, by the absence or presence, of striated elytra. Scarabs The History, Manufacture and Symbolism of the Scarabæus in Ancient Egypt, Phoenicia, Sardinia, Etruria, etc. Commonly one then may set the specimen with the left elytron and wing spread. Practical Taxidermy A manual of instruction to the amateur in collecting, preserving, and setting up natural history specimens of all kinds. To which is added a chapter upon the pictorial arrangement of museums. With additional instructions in modelling and artistic taxidermy. Coadunate: joined together at base; two or more joined together; said of elytra when permanently united at the suture. Explanation of Terms Used in Entomology The wing, when not in use, is folded both lengthwise and transversely, and doubled up beneath the elytron; to permit the transverse folding, the longitudinal nervures are interrupted. Encyclopaedia Britannica, 11th Edition, Volume 6, Slice 6 "Cockaigne" to "Columbus, Christopher" He was delighted with the beautiful metallic color of their brown elytra, dotted over with yellow spots; but the insect, after having bitten him, escaped. Adventures of a Young Naturalist Sometimes the head and thorax are replaced by a human face, and occasionally the body or the elytra have the form of the Egyptian royal cap. Scarabs The History, Manufacture and Symbolism of the Scarabæus in Ancient Egypt, Phoenicia, Sardinia, Etruria, etc. Pike put his finger in and fetched him out, and offered him a little change of joys, by putting a Limerick hook-through his thorax, and bringing it out between his elytra. Crocker's Hole From "Slain By The Doones" By R. D. Blackmore Dimidiate -us: halved; extending half way around; applied to elytra when they cover only half the abdomen. Explanation of Terms Used in Entomology The prothorax is convex in front, and is usually drawn out behind into a prominent process on either side, while the elytra are elongate and tapering. Encyclopaedia Britannica, 11th Edition, Volume 6, Slice 6 "Cockaigne" to "Columbus, Christopher" The head, thorax, and legs are shining black; the elytra, or wing-covers, are olive-green, dotted with black spots, and are much wrinkled. Scientific American, Volume XLIII., No. 25, December 18, 1880 A Weekly Journal of Practical Information, Art, Science, Mechanics, Chemistry, and Manufactures. The wings and elytra stand erect over the locust's back like an immense set of sails; at first colourless, then of a tender green, like the freshly expanded wings of the Cigale. Social Life in the Insect World Striking examples are found in H. coccinelloides, which bears a strong resemblance to beetles of the family Coccinelloidæ, and in C. cupreus, in which certain marks on the abdomen imitate the elytra of beetles. A Book of Natural History Young Folks' Library Volume XIV. Fastigiate: flat-topped and of equal height: also applied to elytra that extend a little beyond the abdomen. Explanation of Terms Used in Entomology The Rhipidophoridae are beetles with, short elytra, the feelers pectinate in the males and serrate in the females. Encyclopaedia Britannica, 11th Edition, Volume 6, Slice 6 "Cockaigne" to "Columbus, Christopher" There are a few short hairs at the rounded tip of the elytra. Journals of Two Expeditions of Discovery in North-West and Western Australia, Volume 2 Let us return to the wings and elytra, which have made no apparent progress since their emergence from their sheaths. Social Life in the Insect World One of the characters by which some beetles are protected is excessive hardness of the elytra and integuments. Darwinism (1889) Humeral carina: in Coleoptera, an elevated ridge or keel on the outer anterior angle of elytra. Explanation of Terms Used in Entomology Coleoptera can be traced back farther in time than any other order of insects with complete transformations, if the structures that have been described from the Carboniferous rocks of Germany are really elytra. Encyclopaedia Britannica, 11th Edition, Volume 6, Slice 6 "Cockaigne" to "Columbus, Christopher" General surface of thorax and elytra very smooth, shining, the dilated parts of thorax and elytra with the surface somewhat undulated. Journals of Two Expeditions of Discovery in North-West and Western Australia, Volume 2 Underneath there are two narrow appendages, the germs of the wings, which are even smaller than the elytra. Social Life in the Insect World Next morning Mr. Layard found the soft parts of the body had been eaten, nothing but the head, thorax, and elytra remaining.—Ann. Ceylon; an Account of the Island Physical, Historical, and Topographical with Notices of Its Natural History, Antiquities and Productions, Volume 1 Sculpture: the markings or pattern of impression or elevation on an elytra or other body surface. Explanation of Terms Used in Entomology In many Carabidae the hind-wings are reduced or absent, and the elytra fused together along the suture. Encyclopaedia Britannica, 11th Edition, Volume 6, Slice 6 "Cockaigne" to "Columbus, Christopher" Elytra with many punctures arranged indistinctly in lines, brownish yellow, the suture, tip and extreme edge of each elytron narrowly margined with brown; scutellum yellowish, black at the base and tip. Discoveries in Australia, Volume 1. With an Account of the Coasts and Rivers Explored and Surveyed During The Voyage of H.M.S. Beagle, in the Years 1837-38-39-40-41-42-43. By Command of the Lords Commissioners of the Admiralty. Also a Narrative Of Captain Owen Stanley's Visits to the Islands in the Arafura Sea. For the first time the wings close fan-wise and lie down in their places; the elytra bend over at their outer edges, forming a flange which lies snugly over the flanks. Social Life in the Insect World Our insect bears a remarkable similarity to a Surinam Buprestis, with serrated elytra. Narrative of a Survey of the Intertropical and Western Coasts of Australia Performed between the years 1818 and 1822 — Volume 2 Suture: a seam or impressed line indicating the division of distinct parts of body wall: the line of junction of elytra in Coleoptera. Explanation of Terms Used in Entomology The pronotum and elytra are often adorned with bright colours or metallic lustre, and marked with stripes or spots. Encyclopaedia Britannica, 11th Edition, Volume 6, Slice 6 "Cockaigne" to "Columbus, Christopher" Black; elytra slightly pitchy; head and thorax thickly punctured; thorax with a cruciform impression on the disk; elytra with three keels meeting before they reach the apex, the intermediate spaces and the apex irregularly punctate. Discoveries in Australia, Volume 1. With an Account of the Coasts and Rivers Explored and Surveyed During The Voyage of H.M.S. Beagle, in the Years 1837-38-39-40-41-42-43. By Command of the Lords Commissioners of the Admiralty. Also a Narrative Of Captain Owen Stanley's Visits to the Islands in the Arafura Sea. The four stumps which emerge from their coverings shortly after the rupture of the corselet along its median line contain, as we have seen, the wings and elytra with their innumerable nervures. Social Life in the Insect World This is also not a true Rhynchaenus, but is a very singular insect in appearance, as the acute spine, which rises from each elytron, appears to be its peculiar defence against entomological collectors. Narrative of a Survey of the Intertropical and Western Coasts of Australia Performed between the years 1818 and 1822 — Volume 2 Axis: a small process at base of elytron, upon which it turns. Explanation of Terms Used in Entomology It is black with a stripe of yellow on each elytron. The Gutenberg Webster's Unabridged Dictionary Section T, U, V, and W Elytra yellowish red, tip and a large oblong spot on each black, the spot not reaching either margin of the elytron; under side of abdomen covered with silky hairs. Discoveries in Australia, Volume 1. With an Account of the Coasts and Rivers Explored and Surveyed During The Voyage of H.M.S. Beagle, in the Years 1837-38-39-40-41-42-43. By Command of the Lords Commissioners of the Admiralty. Also a Narrative Of Captain Owen Stanley's Visits to the Islands in the Arafura Sea. The triangular winglets, the sheaths of the elytra, open along their line of juncture and separate laterally; the two narrow blades, which contain the wings, rise in the centre of the interval and slightly diverge. Social Life in the Insect World This insect may be considered a Molorchus with elytra as long as its wings; and it, therefore, evidently connects this genus with Distichocera. Narrative of a Survey of the Intertropical and Western Coasts of Australia Performed between the years 1818 and 1822 — Volume 2 Complicant: when one elytron extends over the other and partially covers it. Explanation of Terms Used in Entomology The elytra are silvery white, striped and spotted with green; the under wings are rose- colored. The Gutenberg Webster's Unabridged Dictionary Section I, J, K, and L The ground of the spot is red, with a yellow line near the suture on each side; elytra at the base narrowly edged with black. Discoveries in Australia, Volume 1. With an Account of the Coasts and Rivers Explored and Surveyed During The Voyage of H.M.S. Beagle, in the Years 1837-38-39-40-41-42-43. By Command of the Lords Commissioners of the Admiralty. Also a Narrative Of Captain Owen Stanley's Visits to the Islands in the Arafura Sea. This reversal causes the wings and elytra to fall into their natural position. Social Life in the Insect World The elytra of the male are much longer than the abdomen. Narrative of a Survey of the Intertropical and Western Coasts of Australia Performed between the years 1818 and 1822 — Volume 2 Winglets: small, concavo-convex scales, generally fringed at tip, under the base of the elytra in Dytiscidae. Explanation of Terms Used in Entomology The anterior wings are short, in the form of elytra, while the posterior wings fold up beneath them. The Gutenberg Webster's Unabridged Dictionary Section D and E I had on previous visits to the peak noticed the elytra of many beetles lying on the bare top. The Naturalist in Nicaragua What remains is a kind of golden shell, formed of the two conjoined elytra. Social Life in the Insect World This insect is about four lines long, and entirely black, except the upper half of the elytra. Narrative of a Survey of the Intertropical and Western Coasts of Australia Performed between the years 1818 and 1822 — Volume 2 Posterior angle: of thorax, in Coleoptera, is the lateral angle near base of elytra: of the wings = hind angle; anal angle; q.v. Explanation of Terms Used in Entomology Their angles were as sharp as ever, and they did not differ in appearance from the other wing and elytron of the same insect which had been left in water. Insectivorous Plants This and other species of Calopteron are not only imitated in their colour and markings by other families of beetles, but also in this peculiar widening of the elytra. The Naturalist in Nicaragua These ribs are scraped against the posterior margins of the elytra, a small portion of which projects beyond the general outline. The Descent of Man In some of the Nicaraguan species the body is lengthened, and the thorax and elytra coloured, so as to resemble wasps and flies. The Naturalist in Nicaragua Stria: in Coleoptera, a longitudinal depressed line or furrow, frequently punctured, extending from base to apex of elytra: in Lepidoptera, a fine transverse line: in general, any longitudinal impressed line. Explanation of Terms Used in Entomology The elytron, however, had evidently yielded some nutritious matter, for the leaf remained clasped over it for four days; whereas the leaves with bits of the true wing re-expanded on the second day. Insectivorous Plants |
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