Dragonflies and Damselflies

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Presentation transcript:

Dragonflies and Damselflies ODONATA Dragonflies and Damselflies

Hexapod Orders Odonata Odon - tooth Number of Species >5000 Common names damselflies, dragonflies, skippers , darners Typical habitats Aquatic nymph, aerial adult Distinguishing characteristics direct flight muscles -wings can’t be folded Other features nymphs with labial mask for prey capture Primitive wing venation

Odonata Direct flight muscles • •

Odonata -Evolutionary History Meganeura - Permian

Odonata - Adult modifications Modifications for a predatory life Well-developed mandibles Large eyes

Odonata - Adult modifications Modifications for a predatory life -orientation of thoracic segments -changed orientation of legs -spines on legs

Odonata - larval modifications Modifications for an aquatic predatory life Mouthparts palp submentum mentum prementum

Odonata - Classification -larvae with caudal lamellae -wings held vertically at rest -wings same size Zygoptera Odonata Anisozygoptera -larvae with no caudal lamellae -wings held horizontally at rest -wings different size Anisoptera

Odonata - Suborders - Zygoptera Damselflies -larvae with caudal lamellae -wings held vertically at rest -wings same size

Odonata - Suborders - Anisoptera Dragonflies -larvae with no caudal lamellae -wings held horizontally at rest -wings different size

Odonata - Suborders - Anisozygoptera

Aquatic nymph, aerial adult Odonata - Suborders Zygoptera Zygo - equal, ptera- wing Anisoptera Aniso - unequal, ptera- wing Number of Species ≈ 2000 ≈ 4000 Common names damselflies dragonflies Typical habitats Aquatic nymph, aerial adult direct flight muscles -wings can’t be folded wings are same size wings held vertically -slender -nymph - 3 caudal gills direct flight muscles -wings can’t be folded - hind wing larger - wings held horizontally -robust -nymph - no caudal gills Distinguishing characteristics nymphs with labial mask for prey capture Primitive wing venation Other features

Odonata - General Features Mating

Odonata - General Features Mating Courtship Copulation Oviposition

Odonata - General Features Territory

Odonata - General Features Life Cycle Flies inland to feed and mature Returns to water to set up territory and mate Nymph leaves water and molts Aquatic nymph

So far in classfication Ephemeroptera Paleoptera Zygoptera Odonata Anisozygoptera Anisoptera NEOPTERA