What family is the ABW in?
Curculionidae
What are some spot ID characteristics of the ABW?
- Robust snout (bill) with mouth at tip
- Elbowed antennae attached at snout apex
- Thorax and head regions combined are shorter thatn the abdomen
What do you look for when deciding if the larvae is a white grub or a weevil?
Legs.
Weevils do not have legs
How many Generations per year for ABW’s?
2 - 4
ABW’s
1st-3rd instars (larvae) feed on ______. 4th and 5th feed on _____.
Stems (they’re inside the plant)
Crowns (they’re too big to be inside the plant)
Where do adult ABW’s overwinter?
in the tall grass near treelines.
define bi-modal emergence as it relates to ABW’s.
- “Seasonal fluctuations in temperature as well as variability in local microclimates mean adult ABW are converging from different overwintering sites at different times during the spring.”
- Microclimaates can determine emergence
- shady areas vs sunny areas even a few yards away from eachother.
- they can come out at different times
- be sure to monitor multiple areas
how do adult ABW’s feed?
They notch leaves and chew on crowns
What product holds up when all others are face resistance issues for ABW’s?
Conserve
What does the Forsythia plant tell us about ABW’s?
Forsythia is a very good predictor –
- Start of migration (FULL BLOOM)
- Peak densities = 1⁄2 Gold:1⁄2 Green:
Curative Chemical Control for Billbugs:
Carbaryl (Sevin)
How many Billbug generations per year?
1
2 sometimes but it is rare
Endophyte enhanced seed is a way to help control Billbugs.
True or False
True
