Insect Pests Found on Maine Cranberry Beds

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Insect Pests Found on Maine Cranberry Beds
One-Page Photo Gallery: MS Word || pdf
see also Cranberry Insect Photos (via the British Columbia Cranberry Growers Assn.)

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 Maine cranberry bed)
* = 1st day scouting

False Armyworm

6/6/1997	5/28/1998	5/28/1999*
5/24/00	5/31/01	5/13/02*
5/24/05	5/25/07	5/14/08
5/14/09

Gypsy Moth

5/29/00	5/20/01	6/13/02
6/12/06	6/6/07	0 caught so far in 2009

Humped Green Fruitworm

5/31/1999	6/2/00	6/8/01
6/7/02	6/7/05	5/25/07

Cranberry Weevil
Dates 1st found over the years:

0 in 2000	6/8/01	6/13/02
6/20/07	6/2/09

Blackheaded Fireworm
(1st-generation):

6/12/06	5/25/07	5/14/08
5/14/09

(2nd-generation):

7/27/04

7/6/05

7/5/07

Spanworms

6/7/05

5/24/06*

5/28/08

Specific spanworms:
1). Chainspotted Geometer:
7/24/2002 and 6/24/2009
2). Green Spanworm: 6/20/2007
3). 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

6/2/20	6/8/01	5/29/02
5/24/06*	6/6/27	5/14/09

Sawfly larvae (photo)
(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 maintained by the Pest Management Office, University of Maine Cooperative Extension.
Page Last Modified: 6/30/09