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8 Major Orders of Insecta
The 8 major orders of the class Insecta and characteristics thereof
16
Biology
Undergraduate 1
02/14/2011

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Term
The major orders of insecta
Definition
Coleoptera, Diptera, Hemiptera, Hymenoptera, Homoptera, Lepidoptera, Odonata, Orthoptera
Term
Characteristics of Hymenoptera
Definition
two pairs of thin, clear, membranous wings with smaller hindwing; female abdomens end in well developed egg-laying organ and/or stinger; only insects with 'stingers'; often social or colonial
Term
Characteristics of Diptera
Definition
one pair of wings; larges eyes; small antennae
Term
Charateristics of Lepidoptera
Definition
two pairs of wings covered with small scales (rub off easily); usually with prominent knob-like or feathery antennae; sucking mouthparts
Term
Characteristics of Orthoptera
Definition
usually long back legs, hop high in the air, often make rhythic sounds; thin, leathery forewings that cover larger hind wings that are folded like a fan when at rest (except walkingsticks which have no wings)
Term
Characteristics of Odonata
Definition
two pairs of long, narrow, membranous wings roughly equal in size; large eyes; extremely long, narrow abdomens; short antennae
Term
Characteristics of Hemiptera
Definition
triangle on the back formed by the way the forewings are folded when at rest; two pairs of wings hind wings membranous, forewings partly thickened; jointed beak for sucking connect to front part of head
Term
Examples of Hymenoptera
Definition
ants, bees, wasps
Term
Examples of Diptera
Definition
flies, mosquitoes, gnats, punkies
Term
Examples of Coleoptera
Definition
beetles
Term
Examples of Orthoptera
Definition
crickets, grasshoppers, locusts, roaches, walkingsticks
Term
Examples of Odonata
Definition
dragonflies, damselflies
Term
Examples of Homoptera
Definition
aphids, cicadas, leafhoppers, scale insects
Term
Examples of Hemiptera
Definition
true bugs, backswimmers, water striders
Term
Characteristics of Coleoptera
Definition
Pair of hardened wings covering top of body and meeting in straight line down the back; membranous pair of wings covered by wing sheaths when insect is at rest; chewing mouthparts
Term
Characteristics of Homoptera
Definition
two pairs of membranous wings held in tent-like or rooftop position over body at rest; jointed beaks designed for sucking plant juices, connect to base (underside) of head
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