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Insect Pests Found on Maine Cranberry Beds
Photos Page: pdf
Cranberry Tipworm - Dasineura oxycoccana (Johnson)
Cranberry Fruitworm - Acrobasis vaccinii Riley
False Armyworm - Xylena nupera (Lintner)
Blackheaded Fireworm - Rhopobota naevana (Hubner)
Hill Fireworm - Tulsa (=Tlascala) finitella
Cranberry Girdler - Chrysoteuchia topiaria (Zeller)
Gypsy Moth - Lymantria dispar
Cranberry Weevil - Anthonomus musculus (Say)
Cranberry Blossomworm - Epiglaea apiata (Grote)
Spanworms (green spanworm, horned spanworm, chainspotted geometer, etc.)
Sparganothis Fruitworm - Sparganothis sulfureana (Clemens)

First Dates
(Dates when active insects were found for the first time during each indicated year on any commercial cranberry bed)
* = 1st day scouting
False Armyworm
6/6/1997
5/28/1998
5/28/1999*
5/24/2000
5/31/2001
5/13/2002*
5/24/2005
5/25/2007
5/14/2008
Gypsy Moth
 5/29/2000
 5/20/2001
6/13/2002
6/12/2006
6/6/2007
Humped Green Fruitworm
5/31/1999
6/2/2000
6/8/2001
6/7/2002
6/7/2005
5/25/2007
Cranberry Weevil
Dates 1st found over the years:
 0 in 2000
 6/8/2001
6/13/2002
6/20/2007
 
Blackheaded Fireworm
(1st-generation):
 6/12/2006
 5/25/2007
 5/14/08
(2nd-generation):
 7/27/2004
7/6/2005
7/5/2007
Spanworms
 6/7/2005
 5/24/2006*
 5/28/08

Specific Spanworms:

Chainspotted Geometer: 7/24/2002
Green Spanworm: 6/20/2007
Isturgia truncataria (Walker): Dates the Moth was 1st found (and only dates found so far) over the years:
5/24/2000
 5/16/2005
5/24/2006*
5/20/2008
Cranberry Blossomworm
6/2/2000
 6/8/2001
5/29/2002
5/24/2006*
6/6/2007
sawfly larvae
Sawfly larvae
(Action threshold is 30 to 40 per 25 sweeps) (Found in Maine in June)
NOTE: Adult is a small wasp; Have not ever been found at threshold yet in Maine, though it was close once in 1999.
6/20/2007
    
 
If you have comments or questions about this page,
contact Charles Armstrong at: charlesa@umext.maine.edu
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These pages are currently being maintained by the Pest Management Office, University of Maine Cooperative Extension. Page Last Modified: 05/28/08