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Phytophagous Insects - 1 Leaf Eaters Leaf Eating Insects

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Phytophagous Insects - 1 Leaf Eaters Leaf Eating Insects Important Local Species Gypsy Moth Eastern Tent Caterpillar Fall Webworm Bagworm Mimosa Webworm All About ... – PowerPoint PPT presentation

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Title: Phytophagous Insects - 1 Leaf Eaters Leaf Eating Insects


1
Phytophagous Insects - 1
  • Leaf Eaters

2
Leaf Eating Insects
3
Important Local Species
  • Gypsy Moth
  • Eastern Tent Caterpillar
  • Fall Webworm
  • Bagworm
  • Mimosa Webworm

4
All About Gypsy Moths
  • An Introduced Species Concern?
  • Long distance dispersal vs. short
  • Importance of pheromones
  • Chemicals and biologicals can be used to help
    control.
  • Gypsy moth status in Indiana

5
Gypsy Moth
Female and Egg Mass
6
Females Ovipositing
Note Burlap Band Around Tree Why Placed Here?
7
Eggs Laid in Large Clusters on Bark
8
Larvae Hatching
After Hatching, Larvae Head Upward Into Trees
Canopy
9
First Instar Larva
10
Young Larvae Ballooning
11
Last Instar Larva
12
Checking for Hitchiking Pupae
13
Size Difference Between Genders
Female Pupa
Male Pupa
14
Gypsy Moth
Female and Egg Mass
15
Gypsy Moth Male
16
Gypsy Moth - Male
Wow! Somebody out there is wearing some neat
perfume!
17
Gypsy Moth Defoliation
18
Effect of Viral Pathogen
19
Other Important Leafeating Caterpillars
20
Eastern Tent Caterpillar
21
All About the Eastern Tent Caterpillar
  • Range of host plants fairly narrow in this area.
  • Larvae hatch from egg masses in late April and
    early May.
  • Tents observable by 2nd. week of May.
  • Larvae feed and pupate in nearby refugia by
    early June.
  • Adults emerge and lay eggs in mid to late June.
  • Eggs overwinter only 1 gen./year.

22
Eastern Tent Caterpillar Last Instar Larva
23
ETC Tent and Gregarious Larvae
24
ETC Egg Mass on Branch
Note Shiny Egg Mass
25
ETC Control
  • Inspect and destroy egg masses when doing fall
    pruning.
  • Destroy tents to potentially expose larvae to
    predators.
  • Use a contact pesticide with sufficient force to
    break netting

26
Fall Webworm
27
All About the Fall Webworm
  • Adults oviposit on wide range of plant hosts
  • Eggs hatch in mid July.
  • Larvae feed on foliage protected by tents until
    mid September.
  • Pupation away from tree in refugia.
  • One generation/year.

28
Fall Webworm Early Instar Larvae
29
Tents of Fall Webworm
30
Morning Cloak Butterfly
31
Bagworms
Note Larva Feeding
Bagworm Cases Attached to Plant Pupae Inside
32
All About Bagworms
  • Pest of both evergreen and deciduous trees
  • Larvae hatch in early June and build cases of
    plant material that they feed on. Hard to see in
    early summer. Why?
  • Case grows in size as larva matures.
  • Larvae pupate inside bag in late summer and
    overwinter as pupae.
  • Use chemical controls early in season.

33
Bagworm Defoliation
34
Mimosa Webworm
35
All About the Mimosa Webworm
  • Builds the smallest tent of our local web
    building caterpillars.
  • Generally appear in early June and are associated
    with locust trees.
  • Damage is primarily cosmetic
  • Sprays must penetrate webbing to be effective.

36
Mimosa Webworm - Damage
37
Controls for Leaf Eating Caterpillars
  • Bifenthrin (Talstar)
  • Bacillus thuringensis (Thurcide, Dipel)
  • Carbaryl (Sevin)
  • Fluvalinate (Mavrik)

38
Japanese Beetles - Copulation
39
About Japanese Beetles
  • Pests of turf (larvae) as well as ornamental and
    shade trees (adults).
  • Adults have wide feeding preferences.
  • Chemical and biological controls can be
    successful.
  • Pheromone traps effective if properly used.
  • Quarantine programs in effect in western U.S.

40
Japanese Beetle Larvae
41
Japanese Beetle - Pupa
42
Japanese Beetle Life Cycle
43
Leaf Skelotinization
44
Larval Raster Patterns Important In Separation
of Species
45
Control Measures
  • Bifenthrin (Talstar)
  • Deltamethrin (Deltagard)
  • Fluvalinate (Mavrik)

46
Milky Spore
47
Japanese Beetle Nematode Predation
48
Sawflies
Introduced Pine Sawfly
49
All About Sawflies
  • Primitive wasps thick waisted.
  • Complete metamorphosis.
  • Some larvae resemble those of moths while others
    resemble snail slugs.
  • Some species gregarious as larvae while others
    are single.
  • Pests of both conifers and deciduous trees.

50
Gregarious Sawfly Larvae
51
Redheaded Pine Sawfly
52
Blackheaded Ash Sawfly
53
Rose Slug Sawfly
54
Pear Sawflies
55
Sawfly Adult
56
Sawfly Controls
  • Eggs laid in summer on plant terminals. Inspect
    and trim out in fall, as needed.
  • Contact pesticides work well, if timed.
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