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ORDER: DIPTERA

ORDER: DIPTERA. Flies, gnats, mosquitos…. DIPTERA. Di: two Ptera: wings Complete development Chewing (larva) Sponging or piercing sucking (adult). DIPTERA. WINGS: 1 pair Front: membranous Back: stubs. LEAFMINER (Page 166).

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ORDER: DIPTERA

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  1. ORDER: DIPTERA Flies, gnats, mosquitos…

  2. DIPTERA Di: two Ptera: wings Complete development Chewing (larva) Sponging or piercing sucking (adult)

  3. DIPTERA WINGS: 1 pair Front: membranous Back: stubs

  4. 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

  5. LEAFMINER (Page 166) HOSTS • Oak, holly, boxwood, juniper, pine…

  6. LEAFMINER (Page 166) HOSTS • Oak, holly, boxwood, juniper, pine…

  7. LEAFMINER (Page 166) HOSTS • Oak, holly, boxwood, juniper, pine…

  8. LEAFMINER (Page 166) DAMAGE • Blotch or tunnel in foliage • Leaf drop in late summer • Mainly visual

  9. LEAFMINER (Page 166) CONTROL • Healthy plants tolerate • Resistant cultivars

  10. FUNGAL GNAT • One generation per month • Attracted to moist shade and organic matter

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

  12. FUNGAL GNAT DAMAGE • Larva strips roots • Loss vigor, wilting

  13. FUNGAL GNAT • Severe on propagated cuttings • Limited roots

  14. 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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