A comparison of the neuration of the tegmina of mesozoic and recent Cockroaches, to determine as far as possible the immediate relations of the former to existing types, gives as yet little satisfaction.
The singular neuration of the upper wings of this insect is nearly similar to that of a remarkable Indian species, which I have described and figured in Mr. Royle's work on the Natural History of the Himalaya.
The wing neuration is always rather troublesome, as various authors use different names for the veins and cells.
Three anal nervures are present in the hindwing in those families whose wings are well developed, but in several families of small moths the wings of both pairs are very narrow and pointed, and the neuration is consequently reduced.
There is a membranous lobe or jugum near the base of the wing, and the neuration of the hindwing is closely like that of the forewing, the radial nervure being five-branched in both.
Neuration of wings in Pararge, a satyrid butterfly.
This feature of neurationcharacterizes also the Jugatae (see fig.
The forewing, with its prominent apex, is longer than the hindwing, and the neuration in both (see figs.
Noctuidae, but their wing-neuration is more specialized, the sub-costal nervure of the hindwing being confluent with the radial for the basal part of its course.
Three families are included in this group having in common certain primitive characters of the wings and neuration (see fig.
The neurationof the wings resembles that found among the Pieridae, but in the Nymphalidae the pupa, which has a double nose-horn (fig.
The moths have labial palps with slender pointed terminal segments, and narrow pointed wings, but the neuration (except in the Elachistidae) is less degenerate than in most Tineidae.
In the Neuroptera Order the general type ofneuration is borrowed from the Orthoptera; but in Osmylus, Termes, &c.
In the Strepsiptera the folds are only longitudinal; a circumstance which, besides the form and neuration of the wing, sufficiently attests that its station is more near the Orthoptera and Coleoptera than the Diptera.
In this Order it is curious to trace the progress of neuration in the wings of different genera.
As an example of the resemblance, woodcuts are given of one pair in which the colours are simple, being olive, yellow, and black, while the very distinct neuration of the wings and form of the head and body can be easily seen.
The wings are always elongate, and furnished with strong longitudinal neuration and dense transverse nervules strengthening the already strong (although typically transparent) membrane.
The neuration is peculiar, and in many respects without precise analogy in other groups of insects, but it is not necessary here to enter into more than some special points.
This fixitude of type in neuration is not one of the least important of the many peculiarities exhibited in these insects.
I have found considerable difficulty and uncertainty in examining the neuration of undenuded specimens.
In the hind-wings of the female the normal neuration of the family is almost preserved, the only peculiar feature consisting in the origin of veins 6 and 7 from a point on the margin of the cell.
The structure is in most particulars remarkably uniform, theneuration and palpi being practically identical throughout the family.
The neuration of the wings is represented in the cut.
The wings in their neuration approach closely to the preceding genus, but are not angulate, and the ornamentation of the under side tends to become ocellate, or marked by eye-like spots, and in many of the species is ocellate.
The neuration is alike in both sexes, the costal and the median veins greatly thickened toward the base.
The peculiarities of neuration are well shown in the accompanying cut, in which the hind wing has been somewhat unduly magnified in proportion to the fore wing.
The wings, also, in the two sexes often differ in neuration (10.
The above list will hopefully give you a few useful examples demonstrating the appropriate usage of "neuration" in a variety of sentences. We hope that you will now be able to make sentences using this word.
