PSOCOPTERA

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HEMIPTEROID ORDERS
PSOCOPTERA (booklice, bark lice)
PHTHIRAPTERA (lice)
THYSANOPTERA (thrips)
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Entognatha
Archaeognatha
Zygentoma Thysanura
Hexapoda
Ephemeroptera
Odonata
Insecta
Plecoptera
Embiodea
Pterygota
Zoraptera
Dermaptera
Grylloblattodea
?
Mantophasmatodea
Orthoptera
Phasmatodea
Blattaria
Isoptera
Mantodea
Neoptera
Psocoptera
Phthiraptera
Thysanoptera
Hemiptera
Coleoptera
Rhaphidioptera
Megaloptera
Neuroptera
Hymenoptera
Mecoptera
Holometabola
Siphonaptera
Diptera
Strepsiptera
Apterygotes
Trichoptera
Lepidoptera
Paleoptera
Hemimetabolous
Holometabolous
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HEMIPTEROID CLASSIFICATION
Parasitic
Phthiraptera - lice
Mandibles present Lacinia - a rod
Free living
Psocoptera - book lice
Sucking mouthparts
Thysanoptera - thrips
Right mandible lost
Mandibles lacinia stylets
Hemiptera- true bugs
Both mandibles modified
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Hexapod Orders
Psocoptera
Psoco - gnaw, ptera - wings
Number of Species
3200
Common names
Book lice, bark lice
Typical habitats
leaf litter, under stones, under bark

• only modification of mouthparts
• Lacinia is a rod

Distinguishing characteristics
-eat any organic material -damage stored material
- books, specimens
Other features
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Psocoptera - Bark Lice
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Psocoptera - Damage
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Hexapod Orders
Phthiraptera
Phthir - louse, aptera - wingless
Number of Species
5,500
Common names
Lice
Typical habitats
Ectoparasites of birds and mammals
Distinguishing characteristics
-wingless -modified fore tarsi
Other features
Reduced sense organs -sucking biting forms
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Classification of lice
Classification schemes have been

• Order - Mallophaga - biting and chewing lice
• Order - Siphunculata - sucking lice

• Order - Phthiraptera
• Suborder - Mallophaga
• Suborder - Siphunculata

• Order - Phthiraptera
• Suborder - Amblycera
• Suborder - Ischnocera
• Suborder - Anoplura
• Suborder - Rhynchophthirina

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Classification of lice
Biting/chewing lice
Elephant lice
Sucking lice
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Generalized Life Cycle
Eggs (nits) on hair or feathers
Adult on host
Three nymphal instars
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Host Specificity
Bird hosts Mammal hosts Rhynchophthirina Ischno
cera Amblycera
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Rhychnophthirina
13
Host Specificity
14
Amblycera and Ischnocera
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Anoplura
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Among the more famous Anoplura
Phthirus pubis -crab lice
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Among the more famous Anoplura
Head and body lice - Pediculus humanus
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Hexapod Orders
Thysanoptera
Thysano - fringed, ptera - wing
Number of Species
4500
Common names
Thrips
Typical habitats
Vegetation (flowers)
Distinguishing characteristics
-fringed wings
Other features
-haploid/diploid
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Thysanoptera - Life cycle
20
Thysanoptera - Plant Damage