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More Sweep Net Photos

More Sweep Net Photos. Container with holes, label Add food & surfaces Keep shaded!! Keep Cool!! Cooler, packing, ice packs Store in refrigerator Transport in coolers. Insect Storage & Transport. The insects need proper food and care for transport. Cool in refer to slow

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More Sweep Net Photos

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  1. More Sweep Net Photos

  2. Container with holes, label • Add food & surfaces • Keep shaded!! Keep Cool!! • Cooler, packing, ice packs • Store in refrigerator • Transport in coolers Insect Storage & Transport

  3. The insects need proper food and care for transport

  4. Cool in refer to slow • Hand pick • Aspirator = “bug sucker” • Accelerator Separate Larinus minutus knapweed seed head weevil

  5. Accelerator -Sweep net through flea beetle infestation. -place nettings in screen. –flea beetles fit through screen. -flea beetles fall through funnel into jar. –release fairly well cleaned up. -measure flea beetle #’s by volume.

  6. Insect Economy • Defoliators • Seed Head Feeders • Leaf Galls • Stem Galls • Stem Borers • Root Borers • Root Feeders • Other: fungi, nematodes, bacteria, etc..

  7. Insects need the proper habitat!

  8. Cyphocleonus achates – knapweed root boring weevil • Agapeta zoegana – knapweed root boring moth • Larinus minutus – knapweed seed head weevil • Aphthona spp. – leafy spurge flea beetles • Oberea erythrocephala – leafy spurge root boring beetle • Mecinus janthinus – toadflax stem boring weevil. Specific Insect How To

  9. Cyphocleonus: hand pick, sweep net • Agapeta: hand pick, sweep net, vac • Larinus: sweep net + asperator or pump • Aphthona: sweep net + accelerator • Oberea: sweep net + hand pick from net. Bio-agent Collection

  10. Cyphocleonus achates – Root Boring Weevil • Adults emerge Aug./Sept. • Lay eggs on root crown • Larvae bore into root • Over winter as larvae in root • Feeding in taproot and exit hole cause damage • Pupate in early summer • Emerge and do it all again • Do not fly • 2000-29,000+/yr..

  11. Cyphocleonus achatesknapweed root boring weevil

  12. Agapeta zoegana - root boring moth • Biology: • Adults emerge spring/summer • Lay eggs on lower stem • Larvae hatch, mine down stem into the root • Larvae over winter in root • Pupate in soil early/late spring • Larvae can move a short distance through soil to a new plant if theirs dies • Adults disperse by flying • Collected 2,950 in 2007!

  13. Over winters as adult weevil! • Adults gather at knapweed plants when flower buds appear • Females lay one egg per flower • Larvae soon hatch and consume seeds (that is a good thing!!) • Pupate in destroyed flower • Emerge as adult in late summer • Fly away and over winter • Strong flier, readily disperses • Great one-two punch with root borers!! Larinus minutus Biology:

  14. Larinus Collections

  15. Aphthona – leafy spurge flea beetles • Adults emerge from soil early/mid summer • Release pheromone, stay together • Adults feed on spurge leaves, high #’s can damage plants • Scatter eggs on soil around spurge plants • Larvae soon hatch, feed on root hairs • Major effect: larval root feeding • Larvae feed all fall, winter & spring • Pupate in soil in late spring • Becoming very successful bio-agent! • Can hop & fly, we need to disperse them…

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