| 单词 | nervure |
| 例句 | Then comes the radial—usually the most important nervure of the wing—typically with five branches, and the median with four. Encyclopaedia Britannica, 11th Edition, Volume 13, Slice 4 "Hero" to "Hindu Chronology" 2012-04-04T02:00:56.447Z Net′ty, like a net; Net′-veined, in entomology, having a great number of veins or nervures like a network on the surface, as in the wings of many Orthoptera; Net′-winged, having net-veined wings.—n. Chambers's Twentieth Century Dictionary (part 3 of 4: N-R) 2012-01-30T03:00:13.887Z Entrance for a pin-point between them is to be found at the base of the wing where the subcostal and median nervures come close together. Butterflies Worth Knowing 2011-08-10T02:00:15.887Z 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 The wings are expansions of the sides of the second and third sections of the thorax, and are strengthened by narrow thickenings called 'nervures'. The New Gresham Encyclopedia Volume 4, Part 2: Ebert to Estremadura 2011-04-14T02:00:56.200Z From another hinder trunk arise the two-branched cubital nervure and three separate anal nervures. Encyclopaedia Britannica, 11th Edition, Volume 13, Slice 4 "Hero" to "Hindu Chronology" 2012-04-04T02:00:56.447Z These nervures taper towards the extremity of the wing, and are strongest towards its root and anterior margin, where they supply the place of the arm in birds and bats. Encyclopaedia Britannica, 11th Edition, Volume 10, Slice 5 "Fleury, Claude" to "Foraker" 2011-04-03T02:00:20.883Z They are generally preserved in such fair condition that the course of the nervures and the color patterns of the wings can be determined, and even, in one case, the scales may be studied. Butterflies Worth Knowing 2011-08-10T02:00:15.887Z In our British Phasgonura viridissima it appeared to me that the serrated nervure is rubbed against the rounded hind corner of the opposite wing, the edge of which is thickened, coloured brown, and very sharp. The Descent of Man and Selection in Relation to Sex, Vol. I 2011-01-17T03:00:49.523Z The framework that supports the thin membrane we have spoken of as consisting of a system of rays, but to these the terms veins, nerves, nervures, or nervules are more commonly applied by various naturalists. Butterflies and Moths (British) The very foliage is princely; for the nervures and cross-veins form a network pattern of dark green upon the light green area of each broad leaf. The Romance of Natural History, Second Series The other wing consists of a rigid nervure in front and behind of thin parchment which supports fine rods of steel. Encyclopaedia Britannica, 11th Edition, Volume 10, Slice 5 "Fleury, Claude" to "Foraker" 2011-04-03T02:00:20.883Z The arrangement of the nervures at the base of the wing is very singular, and slight differences in it form useful aids to classification. Encyclopaedia Britannica, 11th Edition, Volume 8, Slice 6 "Dodwell" to "Drama" The hind-wings, when developed, are characteristic in form, possessing a sub-costal nervure with which the reduced radial nervure usually becomes associated. Encyclopaedia Britannica, 11th Edition, Volume 6, Slice 6 "Cockaigne" to "Columbus, Christopher" In ordinary descriptions of butterflies and moths the names of the nervures are not so generally used as those of the parts of the wing. Butterflies and Moths (British) The instrument by which it produces its music is contrived out of the ordinary nervures of the wing-case. The Western World Picturesque Sketches of Nature and Natural History in North and South America On the anterior margin the extended nervures make it rigid, while behind it is fine and flexible. Encyclopaedia Britannica, 11th Edition, Volume 10, Slice 5 "Fleury, Claude" to "Foraker" 2011-04-03T02:00:20.883Z Veins: the chitinous, rod-like structures supporting the wings, and especially those extending longitudinally from base to the outer margin nerves nervures; nervules. Explanation of Terms Used in Entomology There are several curved median and cubital nervures and a single anal, but few cross nervures or areolets. Encyclopaedia Britannica, 11th Edition, Volume 6, Slice 6 "Cockaigne" to "Columbus, Christopher" The 'nervures' are generally of a yellowish tinge. Butterflies and Moths (British) Division I. The anterior wings with two submarginal cells and two recurrent nervures. Journal of the Proceedings of the Linnean Society - Vol. 3 Zoology When this creature feels very happy, or wants to charm his mate, he produces a shrill sound by rubbing these teeth across the hard 'nervures,' or wing 'veins.' Chatterbox, 1905. As a general rule, insect wings that are intended for employment in flight are transparent membranes, with the course of the air-tubes marked out upon them as opaque nervures. Chambers's Edinburgh Journal, No. 437 Volume 17, New Series, May 15, 1852 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" I see other nervures in the intervals, pale and very fine. Social Life in the Insect World Thorax: the wings hyaline and iridescent, the nervures very slender and pale rufo-testaceous, the stigma fuscous; the metathorax rounded behind, transversely rugose, and covered with silvery-white pile. Journal of the Proceedings of the Linnean Society - Vol. 3 Zoology Base of these wings in the male with a strong bristle passing behind a strong corneous retinaculum, which arises from the anterior side of the sub-costal nervure. 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. These air-tubes, it will be remembered, are lined by spires of dense cartilage; and hence it is that they become nervures so well adapted to act like tent-lines in keeping the expanded membranes stretched. Chambers's Edinburgh Journal, No. 437 Volume 17, New Series, May 15, 1852 At this fold the median nervure stops and is joined by a cross nervure to the radial, which can be distinguished throughout its length from the subcostal. Encyclopaedia Britannica, 11th Edition, Volume 6, Slice 6 "Cockaigne" to "Columbus, Christopher" I can plainly recognise the longitudinal nervures, which are already stiff; and I can also see—pale, and without relief—the transverse nervures. Social Life in the Insect World Thorax: the femora beneath towards their base, the trochanters and coxæ, except their apex, black; the apical joints of the intermediate and posterior tarsi fuscous; wings hyaline, the nervures fusco-ferruginous, the tegulæ reddish-yellow. Journal of the Proceedings of the Linnean Society - Vol. 3 Zoology Anterior wings of the male brown, clouded with grey and fuscous-brown, a dark cloud near the base, another at the end of the discoidal cell followed by a white dot, the nervures greyish white. 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. In the dragon-flies, the nervures are minutely netted for the sake of increased strength; in the bees, the nervures are simply parallel. Chambers's Edinburgh Journal, No. 437 Volume 17, New Series, May 15, 1852 It is remarkable for having a sort of drum at the base of the fore wings, between the costal nervure and the subcostal. The Voyage of the Beagle The disposition of the radiating nervures, the skeleton of the structure, is not at all the same; the network formed by the cross-nervures gives no idea whatever of the complex final arrangement. Social Life in the Insect World Thorax: the disk very closely punctured, the metathorax rugose; the sides and the legs with a fine glittering sericeous pile, the wings subhyaline, their apical margins fuscous, the nervures fuscous. Journal of the Proceedings of the Linnean Society - Vol. 3 Zoology They are all of small size, and have narrow, broadly fringed wings with rudimentary nervures. The Gutenberg Webster's Unabridged Dictionary Section T, U, V, and W Many grasshoppers stridulate by rubbing the hind legs across strong nervures on the fore wings. The Gutenberg Webster's Unabridged Dictionary Section S The male of Papilio Memnon is a large black butterfly with the nervures towards the margins of the wings bordered with bluish gray dots. More Letters of Charles Darwin — Volume 1 The rest of the wing-cover shows a few more nervures of less importance, which hold the membrane stretched tight, but do not form part of the friction apparatus. Social Life in the Insect World The legs reddish-yellow, with the coxæ and base of the femora black; the wings hyaline; the tegulæ yellow, the nervures pale testaceous. Journal of the Proceedings of the Linnean Society - Vol. 3 Zoology Its wings are orange-red, with black lines along the nervures and a row of white spots along the outer margins. The Gutenberg Webster's Unabridged Dictionary Section T, U, V, and W The projecting portions of both wing-cases are traversed by a similar strong nervure, but this is scored like a file only in one of them, in the other remaining perfectly smooth. The Naturalist on the River Amazons In our British Phasgonura viridissima it appeared to me that the serrated nervure is rubbed against the rounded hind-corner of the opposite wing, the edge of which is thickened, coloured brown, and very sharp. The Descent of Man The left or lower wing-cover is of similar structure, with the difference that the bow, the callosity, and the nervures occupy the upper face. Social Life in the Insect World Thorax: the posterior margin of the prothorax arched; the anterior and intermediate tibiæ and tarsi and the femora at their apex beneath, also the posterior femora, pale ferruginous; the wings subhyaline, the nervures dark fuscous. Journal of the Proceedings of the Linnean Society - Vol. 3 Zoology NEURATION.—The arrangement of the veins or nervures in the wings of insects. The Origin of Species by means of Natural Selection, 6th Edition Wash-ed with sad art; And the flowers of dreaming Pal-ed not their fervours, For her blood flowed through their nervures; And the roses were most red, for she dipt them in her heart. New Poems This segment is bent at a right angle along a strong longitudinal nervure, and descends on the outer side in a flap which encloses the insect's flank when in the attitude of repose. Social Life in the Insect World It will be found that the two bows—that is, the toothed or indented nervures—cross one another obliquely. Social Life in the Insect World The wings with one marginal and three submarginal cells, and one recurrent nervure. Journal of the Proceedings of the Linnean Society - Vol. 3 Zoology 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 Finally, still more delicate, and running transversely, a number of very short nervures complete the pattern. Social Life in the Insect World A radiating bundle of strong nervures runs through it in the direction of its length and forms the framework of the fan, which is readily furled and unfurled. Social Life in the Insect World The two bows, the toothed nervures, engage obliquely one with the other, and their mutual friction causes the sonorous vibration of the two stretched membranes. Social Life in the Insect World This is a small dry, white membrane, oval in shape, convex on the outer side, and crossed along its larger diameter by a bundle of three or four brown nervures, which give it elasticity. Social Life in the Insect World These tongues may be compared to the blade of a watchman's rattle, only instead of engaging with the teeth of a rotating wheel they touch the nervures of the vibrating cymbal. Social Life in the Insect World It is, as before, a dry white scale, convex on the outside, and crossed by a bundle of fine reddish-brown nervures. Social Life in the Insect World Numerous nervures, spreading out fan-wise, cross them in the direction of their length. Social Life in the Insect World This lateral fold encloses the flank of the abdomen and is covered with fine oblique and parallel nervures. Social Life in the Insect World From the rubbing of the belly against the network of nervures proceeds the species of puffing sound which I have compared to the hissing of an adder in a posture of defence. Social Life in the Insect World The wings are heavy, moist, transparent, with nervures of a tender green. Social Life in the Insect World The powerful nervures of the dorsal portion of the wing-cover are of the deepest black, and their general effect is that of a complicated design, not unlike a tangle of Arabic caligraphy. Social Life in the Insect World Each space is surrounded by a strong nervure and goffered by slight wrinkles or depressions. Social Life in the Insect World |
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