Insect Wing Venation Diagram

In chalcidoidea chalcid wasps for instance only the subcosta and part of the radius are present.

Insect wing venation diagram. Apart from the vertebrates insects are the only other group of animals to have successfully evolved flight. It is based on a combination of speculation and fossil data. See more ideas about insect wings wings insects. Diagram of insect wing venation.

The text says that the radius vein has 1 5 branches which reach the wing margin but the diagram shows 6 veins doing so. On the right side of the diagram there is a section across the wing. Jan 24 2020 explore kees van der graaf s board insect wings followed by 1039 people on pinterest. Für elise by beethoven image credit.

The archedictyon is the name given to a hypothetical scheme of wing venation proposed for the very first winged insect. Venation of insect wings based on the comstock needham system. I am very confused with how to reconcile the diagram of insect wing venation and the written text. Since all winged insects are believed to have evolved from a common ancestor the archediction represents the template that has been modified and streamlined by natural selection for 200.

The text says that the media has 1 4 branches which reach the wing margin but the diagram shows 8 doing so. Insect wing venation patterns wing contour and shapes of vein bounded domains. Finally the wing diagram is rotated to make the line segment determining the wing width vertical. The splines fitted to the wing outline and the venation skeleton comprise the wing diagram.

The archedictyon is the name given to a hypothetical scheme of wing venation proposed for the very first winged insect. Costa subcosta sc1 sc2 radius r1 rad. 2014 this order level representation of insect wing venation patterns shapes and vein domains as defined in the figure on the right exhibits the range and diversity of our sampling insect orders labeled in light gray are not sampled or characterized as wingless full species. In the diagram the width of veins is ignored and each vein is represented by one curve.

The veins are named according to system of comstock and needham modified by wootton. It is based on a combination of speculation and fossil data. In some very small insects the venation may be greatly reduced. It shows in exaggerated way corrugation of the wing.

Redrawn with modifications from chapman fig. The wings are composed of two membranes of the cuticle pressed together and supported by a series of veins the pattern of veins the venation is not haphazard but very regular though it does show modifications. The wing diagram is then scaled to make the wing width equal to 100. Conversely an increase in venation may occur by the branching of existing veins to produce accessory veins or by the development of additional intercalary veins.