Transcript Microcoryphia

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:
(1) ectognathous mouthparts
(2) only 3 musculated antennal segments
(3) multi-segmented tarsi
(4) well-developed compound eyes
(5) tentorium present
• “Apterygota” (ectognathous apterygote) (2 orders)
• Microcoryphia (=Archaeognatha)
• Thysanura
Order Microcoryphia
Microcoryphia (head)
eyes, contiguous dorsally
lateral ocellus
median ocellus
• antennae prominent
• eyes large
• ocelli present
• mouthparts ectognathous
Microcoryphia (head)
monocondylic mandibles
• Protura
• Collembola
• Diplura
• Microcoryphia
dicondylic mandibles
• all other hexapod orders
2 condyles
1 condyle
Microcoryphia (thorax)
• wings absent
• thorax strongly arched
• legs cursorial
coxal stylus
tarsus 2-3
segmented
Microcoryphia (abdomen)
sternite
• 10 segmented
• styli present
• exsertile vesicles
usually present
• median caudal filament
present
• cerci present
coxa
exsertile
vesicles
median caudal
filament
cercus
stylus
Microcoryphia (abdomen)
cercus
median caudal filament
gonapophysis 8
gonapophysis 9
gonocoxite 8
gonocoxite 9
female ovipositor structures
Microcoryphia (biology/ecology)
Microcoryphia (biology/ecology)
Order Microcoryphia
Microcoryphia (fauna)
World Fauna
• 2 families
• ca. 350 species
North American Fauna
• 2 families
• Machilidae (lab)
• Meinertellidae
• ca. 20 species
Order Microcoryphia
FINIS
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