Order Dermaptera Earwigs. Order Dermaptera Simple metamorphosis Chewing mouthparts Large pincers on...
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Transcript of Order Dermaptera Earwigs. Order Dermaptera Simple metamorphosis Chewing mouthparts Large pincers on...
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Order Dermaptera
Earwigs
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Earwigs
Earwigs Order Dermaptera Simple
metamorphosis Chewing mouthpartsLarge pincers on
abdomenSome are
predaceousSome detritivores
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Earwigs
LocationsFound in cool damp areas under boards, concrete, ground liter, etc.Occasionally indoors
DamageFeeds on ripe fruitVegetable gardens
Controls (chemical, biological, IPM)Various insecticides
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Earwigs
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Order Isoptera
Termites
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Termites
Order Isoptera Simple
metamorphosisChewing mouthpartsLocationsSome nest in soilSome nest in trees
and wooden structures
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Termites
DamageSever damage to
wooden structures from feeding and tunneling
Controls (chemical, biological, IPM)
Insecticidal soil drenching
Fumigation Sprays and dusts
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Termites
Reproductive stage is “on the wing”Winged stage referred to alates Three types of termitesSubterranean typeDrywood typeDampwood type
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Subterranean Termites
Lives in the soilActive after rainsTunnels along the grainLives in a caste systemHuge colonies
Black/brown reproductivesLives in earthen tunnelsControlSoil drench injections
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Drywood Termites
Attacks sound woodTunnels across the grainActive after rainsLives in smaller colonies than
subterranean typesReproductives are lighter red/brownRequires fumigation to control
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Dampwood Termites
Attacks rotting dampwoodLarger than drywood typesSame color as drywood types
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Termites
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Termites
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Order Thysanoptera
Thrips
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Thrips
Order Thysanoptera
Simple metamorphosis
Piercing-sucking mouthparts
Locations On tender foliage,
in flowers and on fruit
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Thrips Damage
Pierce into plant cellsCauses flowers to not open, open
deformed or discoloredCauses russeting on fruit skin
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Thrips Damage
Causes “silvering” or “bleaching” and deformation of leaves
Some thrips are predaceousSome are serious greenhouse pests
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Thrips
Controls (chemical, biological, IPM)
Flower thrips can be hard to treat when inside flower buds
Systemic insecticides
Various insecticides
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Order Hemiptera
The “True” Bugs
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Hemipterans - True Bugs
Order HemipteraSome pests, some beneficialsSimple metamorphosisPiercing-sucking mouthpartsTwo pair of wings“bug” is always a separate word
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Hemipterans - True Bugs
LocationsAll over Southern CaliforniaBird’s nestsAnimal and human beddingPlant feedersPredaceousParasitic Some aquatic species
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Hemiptera
DamageTransmits disease to humans and animalsDamage to foliage, flowers and fruitInject chemicals into plants when feedingAdverse affects on plant growth
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Hemiptera
Stink Bug
Family Pentatomidae
Leaf-Footed Bug
Family Coreidae
Chinch Bug
Family Lygaeidae
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Hemiptera
Controls (chemical, biological, IPM)
Various insecticides
Systemic insecticides
Water Strider
Family Gerridae
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Hemiptera
Water Boatman
Family Corixidae Giant Water Bug
Family Belostomatidae
Backswimmer
Family Notonectidae
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Hemiptera
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Hemiptera
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Snails & Slugs
Phylum Mollusca
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European Brown Garden Snail
Class GastropodaHelix aspersaFirst described by O.F. Muller in 1774 in
ItalyFirst introduced into California in the
1850s as a delicacy – escargotSerious economic pest to agricultural
crops as well as ornamentalsThey are protected by a hard spiraled
shell
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European Brown Garden Snail
Snails travel on a mucus trail excreted from glands under a single muscular organ called a “foot”
They are a nocturnal plant feeder – also feed on bark and organic matter in the soil
They prefer cool, moist environmentsSnails have both male and female
reproductive organsSnails are self-fertile and cross-breed as well
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European Brown Garden Snail
Snails lay from 30 to 120 eggs at one time – over 400 eggs per year
The eggs are buried in soil 1” to 1-1/2” deep
Each adult can lay eggs every six weeks from February to October
Eggs hatch in about 2 weeks and the snails require about 2 years to reach maturity
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European Brown Garden Snail
Is He Handsome or What?
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European Brown Garden Snail
Snail Infestation
Mating Adults
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Gray Garden Slug
Class Gastropoda Agriolimax reticulatusUp to 60 mm long, pale creamish, brownish or
slate colored with dark spots The sole is pale and the mucus white and stickyEggs are 3 mm x 2.5 mm, whitish, translucent,
and laid in clusters of 10-20 (or more)Hatching time is three weeksYoung slugs are 4 mm, whitish translucent
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Gray Garden Slug
Agriolimax reticulatus
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Gray Garden Slug
Agriolimax reticulatus