ORDER: DIPTERA

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ORDER DIPTERA

• Flies, gnats, mosquitos

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DIPTERA

• Di two
• Ptera wings
• Complete development
• Chewing (larva)
• Sponging or piercing sucking (adult)

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DIPTERA

• WINGS 1 pair Front membranous Back stubs

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LEAFMINER (Page 166)

• Several hundred species of foliage miners that
  can be moths, beetles, flies or sawflies
• Larva 1/8" maggot
• Adult 1/8" mosquito-like

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LEAFMINER (Page 166)

• HOSTS
• Oak, holly, boxwood, juniper, pine

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LEAFMINER (Page 166)

• HOSTS
• Oak, holly, boxwood, juniper, pine

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LEAFMINER (Page 166)

• HOSTS
• Oak, holly, boxwood, juniper, pine

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LEAFMINER (Page 166)

• DAMAGE
• Blotch or tunnel in foliage
• Leaf drop in late summer
• Mainly visual

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LEAFMINER (Page 166)

• CONTROL
• Healthy plants tolerate
• Resistant cultivars

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FUNGAL GNAT

• One generation per month
• Attracted to moist shade and organic matter

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FUNGAL GNAT

• HOST
• General feeder
• Many feed on organic matter
• More severe in greenhouse potting soil
• Potting soil sterile

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FUNGAL GNAT

• DAMAGE
• Larva strips roots
• Loss vigor, wilting

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FUNGAL GNAT

• Severe on propagated cuttings
• Limited roots

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FUNGAL GNAT

• CONTROL
• Clean up debris
• Yellow sticky cards for adults
• Bacillus thuringiensis var. israelensis,
  (Gnatrol)
• Drench soil with insecticide
• Predatory nematodes

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