By Vincent Mannino County Extension Director – Fort Bend.
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Transcript of By Vincent Mannino County Extension Director – Fort Bend.
![Page 1: By Vincent Mannino County Extension Director – Fort Bend.](https://reader036.fdocuments.net/reader036/viewer/2022062802/56649ea25503460f94ba66c7/html5/thumbnails/1.jpg)
By Vincent ManninoBy Vincent ManninoCounty Extension Director – Fort BendCounty Extension Director – Fort Bend
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1,350,000 Living Speciesof Plants & Animals
0
100000
200000
300000
400000
500000
600000
700000
800000
Population
Bugs
Plants
Animals800,
000
(60%
)
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Major Arthropod Classes (jointed foot)
Species Percentages Insecta = 90% Arachnida = 6% Crustacea = 2.5% Chilopoda & Diplopoda = 1.5%
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Body composed of 3 divisions. Head bears 1 pair of antennae and one pair
of compound eyes and up to 3 simple eyes. Thorax bears 3 pair of legs and 1-2 pairs of
wings. Abdomen bears the ovipositor.
Insecta
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Body composed of 2 divisions cephlathorax (head+thorax) abdomen.
Antennae are absent Eyes are simple 4 pairs of legs attached to
cephlathorax Mainly terrestrial.
Arachnida
Banana spider
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Crustacea Mostly aquatic Breathe by gills 2 pairs of antennae 4 or more pairs of legs
some modified for swimming
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Terrestrial Breathe by air tubes Legs on each body segment
Chilopoda – 1 pair Diplopoda – 2 pairs
One pair of antennae Chilopoda has poison
glands behind the head.
Chilopoda & Diplopoda
Millipede
Centipede
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The World of Insects
250,000 U. S. SPECIES
0
10
20
30
40
50
60
70
80
90
NEI
EP
B
Not Economically Important - 225,000 (90%)
Economic Pests - 7,500 (3%)
Beneficial - 17,500 (7%)
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Key Pests
Occasional Pests
Secondary pests
Basic EconomicPest Categories
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Key PestsThose which
cause economic
losses and/or misery almost
annually.
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Occasional Pests
Those which infrequently
cause economic losses; generally due to specific
weather factors.
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Secondary Pests
Those occasional pests or non-pests which
cause economic losses due to a
man-made disruption.
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External Anatomyof an Insect
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Ways InsectsDamage Plants
Chew, tunnel, & mine leaves, stems, fruit and roots.
Pierce and suck leaves, stems and fruit Cause egg-laying damage and use plant
parts for nesting Inject toxins into leaves and
disseminate disease
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Mouthparts
stylet
coilhook
snout
sponging
mandibles
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A. running; B. jumping; C. digging; D. grasping; E. catching; F. walking & digging; G. reduced leg used
for walking & digging;
H. walking on water
Legs Types
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Antennae
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Wings
Membranous
Lacey
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Insect Growth & Development
Types of Metamorphosis
No Metamorphosis Gradual
Metamorphosis Incomplete
Metamorphosis Complete
Metamorphosis
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No Metamorphosis
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Gradual Metamorphosis
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Incomplete Metamorphosis
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Complete Metamorphosis
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Order COLEOPTERA The Beetles
Diverse, 40% of all insects
Complete metamorphosis
Chewing mouthparts Wings - 4, front wings
being elytra Variable antennae
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Order: COLLEMBOLAThe Springtales
None are harmful Fercula present No metamorphosis Chewing mouthparts No Wings Antennae - short,
filiform
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Order: DERMAPTERA
The Earwigs
Large cerci, scavengers Gradual Metamorphosis Chewing mouthparts Wings - 4, leathery,
short Antennae - filiform
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Order: DIPTERAThe Flies
Diverse Excellent flyers Sponging or sucking
mouthparts Complete metamorphosis Wings - 2, rear wings
reduced to halteres Antennae - short bristle-
like or filiform
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Order: EPHEMEROPTERAThe Mayflies
Short-lived (for a day) Long cerci Mouthparts: adults have
none, naiads have chewing Incomplete Metamorphosis Wings - 4, large,
membranous Short filiform-type antennae
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Comments: Sap feeders Sucking Mouthparts Gradual Metamorphosis Wings - 4, front wings are
hemeltyra Antennae - generally long,
filiform All have a scutellum
Order: HEMIPTERAThe True Bugs (stinkbugs)
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Order: HOMOPTERACICADAS, HOPPERS, WHITEFLY, APHIDS,
SCALES
Most diverse group, Sap-feeders Sucking Mouthparts Gradual Metamorphosis Wings - 4, similar in form,
held roof-like Antennae - filiform to
bristle-like
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Many beneficial species Chewing to modified
sucking mouthparts Complete metamorphosis Wings - 4, membranous Antennae - 10+ segments
Order: HYMENOPTERAWASPS, BEES, ANTS
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Comments: Highly social, wood feeders
Chewing Mouthparts Gradual Metamorphosis Wings - 4 (on
reproductives), equal in size
Antennae - Moniliform, filiform
Order: ISOPTERATERMITES
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Comments: Larvae mostly plant feeders
Larvae have chewing mouthparts, adults have sucking
Complete metamorphosis Wings - 4, scaly Variable antennae
Order: LEPIDOPTERAMOTHS & BUTTERFLIES
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Comments: Most all are beneficial
Mouthparts - Chewing, sucking
Complete metamorphosis, larvae predaceous
Wings - 4, with many cross veins
Antennae - filiform
Order: NEUROPTERAALDERFLIES, LACEWINGS,
ANTLIONS,...
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Comments: Primitive, large insects w/ prominent
wing veins Incomplete metamorphosis Wings - 4, dragonfs. hold
wings out, damself. fold wings up.
Short, filiform antennae.
Order: ODONATADRAGONFLIES & DAMSELFLIES
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Comments: Primitive, straight-winged
Chewing Mouthparts Gradual Metamorphosis Wings - 4, front pair leathery Antennae - Variable
Order: ORTHOPTERAGRASSHOPPERS, CRICKETS, ROACHES,
MANTIDS
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Comments: Primitive, large, soft- bodied, cerci present
Chewing mouthparts, many adults do not feed
Incomplete metamorphosis Wings - 4, large, membranous Long filiform antennae
Order: PLECOPTERASTONEFLIES
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Comments: Minute insects, disease transmitters
Rasping/sucking mouthparts Incomplete Metamorphosis Wings - 4, fringed Antennae - short, 4-9
segments
Order: THYSANOPTERATHRIPS
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Comments: Small, flattened laterally
Sucking mouthparts Complete
metamorphosis
Wingless Reduced antennae
Order: SIPHONAPTERAFleas
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BUGS, NATURE & YOU ~ We Can Get Along! ~
The End!