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Classification of Living Hexapod Orders

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Presentation on theme: "Classification of Living Hexapod Orders"— Presentation transcript:

1 Classification of Living Hexapod Orders
Class Hexapoda (“six-legged” animals) “Entognatha” (entognathous apterygotes) (3 orders) Protura, Collembola, Diplura Insecta (“ectognatha” or insects) (28 orders) Some characters of the Insecta: ectognathous mouthparts only 3 musculated antennal segments multi-segmented tarsi well-developed compound eyes tentorium present “Apterygota” (ectognathous apterygote) (2 orders) Microcoryphia (=Archaeognatha) Thysanura

2 Order Microcoryphia

3 Microcoryphia (head) eyes, contiguous dorsally lateral ocellus
median ocellus antennae prominent eyes large ocelli present mouthparts ectognathous

4 Microcoryphia (head) monocondylic mandibles Protura Collembola Diplura
dicondylic mandibles all other hexapod orders 2 condyles 1 condyle

5 Microcoryphia (thorax)
wings absent thorax strongly arched legs cursorial coxal stylus tarsus 2-3 segmented

6 Microcoryphia (abdomen)
sternite 10 segmented styli present exsertile vesicles usually present median caudal filament present cerci present coxa stylus exsertile vesicles median caudal filament cercus

7 Microcoryphia (abdomen)
cercus median caudal filament gonapophysis 8 gonocoxite 8 gonapophysis 9 gonocoxite 9 female ovipositor structures

8 Microcoryphia (biology/ecology)

9 Microcoryphia (biology/ecology)

10 Order Microcoryphia

11 Microcoryphia (fauna)
World Fauna 2 families ca. 350 species North American Fauna Machilidae (lab) Meinertellidae ca. 20 species

12 Order Microcoryphia FINIS

13 Text Slide Blank oooo – oooo oooo – oooo oooo (oooo) – oooo


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