Important

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Important Insect Orders
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• Depending upon which textbook you use,
• there are 25-30 Insect Orders
• A few less common Orders are not listed
• A few more common Orders are listed
• Those I expect you to know have

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CLASSIFICATION CATEGORIES
Kingdom Animal
Phylum Arthropoda
Class Insecta
Order Coleoptera
Family Scolytidae
Genus Dendroctonus
Species frontalis
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Scientific name Dendroconus frontalis
Common name Southern pine beetle
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Collembola - Springtails
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Order Ephemeroptera - Mayflies
short-lived wings
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Order Odonata Dragonflies and Damselflies
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Isoptera Termites
Termite workers and damage to wooden
structure Termite queen and workers
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Order Plecoptera - stoneflies
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Order Dictyoptera cockroaches, mantids
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Preying Mantid
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Order Orthoptera grasshoppers
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Order Dermaptera earwigs
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Order Psocoptera booklice, barklice
Gradual Metamorphosis
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Psocoptera web covering oak tree
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Order Hemiptera These are the true bugs,
Cicadas, aphids, scales and spittlebugs (now
also contains Homoptera)
Gradual Metamorphosis
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Hemiptera Leaf footed bug
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Periodical Cicada 13 yr
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Asian Woolly Hackberry Aphid
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Order Thysanoptera Thrips fringe wing

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Order Phthiraptera These are the chewing and
sucking lice. Tend to be parasites on other
animals.
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Bird louse
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Head Louse Pubic Louse
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Order Neuroptera Lacewings nerve wing
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Order Coleoptera Beetles sheath wing

Goliath beetles
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Order Mecoptera Scorpionflies long wing
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Order Trichoptera Caddisflies hair wing

Caddisfly cases
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Order Lepidoptera Moths Butterflies
scale wing
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Order Hymenoptera Bees, Wasps, Ants
Sawflies membrane wing
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Killer bees are Hymenoptera
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Sawflies are Hymenoptera
adult
larva
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Order Diptera True Flies two wing
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Order Siphonaptera Fleas tube without wing

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Questions to answer for Basic Entomology 1)
What are the major characteristics of the phylum
Arthropoda? What are the basic differences that
separate the Chelicerata and Mandibulata? 2) Why
are arachnids important? 3) What is the most
basic type of insect mouthparts? List the other
specialized types of mouthparts and give
examples of insects that have each type. 4)
What morphological characteristics separate the
class Insecta from other members of the phylum
Arthropoda? 5) What are tagma? 6) How does the
insect respiratory system differ from that of
humans? 7) What is the primary function of the
insect brain? How does that differ from
humans? 8) What is metamorphosis? List the
four basic types of metamorphosis, with an
example of an insect group that has each type. 9)
Why do you think entomologists believe the
development of complete metamorphosis was so
important? 10) Define the terms, Instar and
generation. 11) What are the basic
characteristics of the orders, Collembola,
Ephemeroptera, Plecoptera, Dictyoptera,
Orthoptera, Hemiptera, Thysanoptera, Coleoptera,
Neuroptera, Trichoptera, Lepidoptera,
Hymenoptera and Diptera?