Original dragonflies
| Original dragonflies | ||||||||||||
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Epiophlebia superstes |
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| Systematics | ||||||||||||
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| Scientific name | ||||||||||||
| Anisozygoptera | ||||||||||||
| Handlirsch , 1906 | ||||||||||||
| species | ||||||||||||
The primeval dragonflies (Anisozygoptera or Epiophlebioptera) are a suborder of the dragonflies and comprise three species in one genus.
features
The original dragonflies anatomically mediate between the small dragonflies (Zygoptera) and the large dragonflies (Anisoptera), but are more closely related to the latter. As in some of the original large dragonflies (Petaluridae and Gomphidae), their eyes are separated from one another and, unlike in small dragonflies, are no more than the width of an eye apart. The wings are similar to those of some dragonflies. In the abdominal appendages , like the dragonflies, they have two upper ones ( cerci ), but only one lower one ( epiproct ). The egg-laying apparatus of the females is a fully functional endophytic ovipositor , as is the case with all dragonflies and many dragonflies .
Ur-dragonflies are weak fliers.
The larvae of the primeval dragonflies have a broad body and breathe like large dragonfly larvae through rectal trachea , but cannot move by expelling water. To ward off enemies, they can generate tones through stridulation .
literature
- Jill Silsby: Dragonflies of the World. The National History Museum, 2001, ISBN 0565091654