Insects with incomplete transformation are types of development, examples of representatives, scheme

A change in insect ages with an incomplete stage of transformation is associated with a large number of lines, when insects get rid of the old cuticle, which is then replaced by a new. This process helps them to gradually increase their size. In case of incomplete transformation of the difference between representatives of various stages, they are not so pronounced. For example, the larvae of most insects resemble the same adults, but in a reduced version. However, the features of metamorphosis vary depending on the type of view under consideration. For example, a larva and an imago dragonfly look completely different. The similarity of the stages is inherent in primitive flawless representatives of insects, the changes of which are associated only with an increase in growth. Incomplete transformation is characteristic of insects such as bugs, straightwinged, equivalents, dragonflies, praying mantis, cockroaches, spring, earwovers, subscriptions and lice.

We offer to familiarize yourself with all representatives of insects with incomplete transformation.

The detachment is straightwinged

Green grasshopper





Dragonfly detachment

Big rocker

The detachment is equivalent



Bed bugs

Home bug

Berry bug

The main stages of incomplete transformation of the larva into an Imago

  • Egg. In the shell of the eggs there is an embryo of the future insect. The walls of the egg are quite dense. While in the egg, vital organs are formed in the body of the embryo and there is a gradual transition to the larval stage;
  • Larva. The just appeared larvae can have a radical external difference from adult representatives. But over time, larvae are becoming more and more like adult insects. The main morphological difference between the larva and the imago is the absence of wings and genitals in the larvae for reproduction. The similarity of the larva with the imago with incomplete metamorphosis is explained by the fact that various additional devices are formed not with the change in the stages of development of the embryo, but as they grow older. The development of insect wings begins approximately from the third larval stage. At the last larvae stages, insects can be called “nymphs”.
  • Imago. This stage of insect development is characterized by an already fully formed individual, which has all the genitals necessary for propagation.
  • Differences from complete transformation

    Despite the lack of an intermediate stage characteristic of complete transformation, insects with incomplete transformation are absolutely the same insects. The number of stages, the speed of transition and other features are associated only with the habitat of insects. For example, stages of aphid development are determined by the number of available food supplies throughout the development.

    With complete transformation, insects have cardinal external differences at all stages of development, while insects with incomplete metamorphosis have a slightly less significant difference in appearance.


    In larvae with incomplete transformation, a pair of complex eyes is located and the structure of the device of the rotary apparatus is the same as that of the imago. The larva in front of the Imago stage passes through 4 or 5 Linek, and some species reach this stage after 20 lines. Because of this, various types of insects vary in the number of phases of development of the larvae.

    Some insects have a complicated incomplete transformation, namely hypermorphosis. This phenomenon is characterized by the fact that nymphs appear at the stage of larvae.

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