Gypsy Moth Surveys: 2005 - 2016

Gypsy Moth CaterpillarGypsy moth, which was initially introduced to the United States in Massachusetts in 1869, is now a serious forest pest endemic to the northeastern states.  The caterpillar stage feeds on more than 500 trees and shrubs with oaks being preferred.  Apple, sweetgum, basswood, gray and white birch, poplar, willow, and hawthorn are also favored by all larval instars.  Since 1924, more than 81 million forested acres have been defoliated by the gypsy moth.  The population spreads naturally through ballooning wherein very young (and small) caterpillars spin a long thread of silk into the air where it is caught by the wind. Females of the European strain of gypsy moth, the most common type in North America, cannot fly, so this slows down the speed at which they can spread. However, egg cases and larvae are carried very effectively to new locations by humans. Gypsy moths tend to lay their eggs in cracks and other protected places, so car wheel wells, patio furniture, campers and motorhomes, and boat trailers are often covered with the fuzzy brown egg cases or with caterpillars that have crawled inside for protection.

Gypsy Moth TrapKentucky is nearly surrounded by regulated, infested areas in Virginia, West Virginia, Ohio, Indiana and eastern Tennessee. From 2000-2002, West Virginia experienced record defoliations in which over 1 million acres were affected.  The possibility of gypsy moth spread to Kentucky is very high due to the popularity of Kentucky's recreational areas and the number of people moving into the metropolitan areas from the northeast. We have been surveying for this pest since 1983 and will continue monitoring due to the close proximity of gypsy moth present in states surrounding Kentucky on all sides.  This extensive trapping program pinpoints potential problems so they may be quickly eradicated before they become infestations that require the expenditure of large amounts of time and money to eradicate.

Triangular delta traps are baited with a synthetic female sex pheromone to attract and capture male gypsy moths every year.  Detection traps are set throughout the state, covering as much of the state as funding will allow, in order to detect moths.  Delimiting traps are extra traps set in an area which previously had several moth captures.  Slow the Spread is a program that gives funding to states to intensively trap along the leading edge of the zone which is generally infested with gypsy moth to detect populations and allow for quick eradication. 

Numbers of moths captured in each county are shown in parentheses after the county name. 

2005

  • Number of Traps Set: 8830
  • Number of Moths Captured: 46
  • Number of Positive Counties: 12
  • Positive Counties:  Bath (1), Boyd (1), Campbell (29), Fayette (3), Greenup (4), Harrison (1), Henry (1), Kenton (2), Lawrence (1), Lewis (1), Lincoln (1), Trimble (1)

2006

  • Number of Traps Set: 7734
  • Number of Moths Captured: 130
  • Number of Positive Counties: 20
  • Positive Counties:  Adair (1), Boone (8), Bourbon (1), Boyd (2), Bracken (8), Campbell (61), Carter (1), Fayette (2), Gallatin (2), Grant (3), Greenup (8), Harrison (1), Jefferson (1), Kenton (11), Lawrence (1), Lewis (2), Mason (1), Owen (2), Pendleton (13), Scott (1)

2007

  • Number of Traps Set: 6630
  • Number of Moths Captured: 212
  • Number of Positive Counties: 34
  • Positive Counties:  Anderson (1), Bath (3), Boone (5), Boyd (6), Bracken (3), Campbell (35), Carroll (1), Carter (14), Clark (3), Fayette (6), Fleming (1), Floyd (10), Franklin (6), Grant (2), Greenup (2), Harrison (2), Henry (1), Jefferson (1), Johnson (11), Kenton (1), Lawrence (28), Lewis (6), Martin (16), Mason (3), Nicholas (1), Oldham (2), Owen (3), Pike (20), Robertson (2), Rowan (1), Scott (3), Shelby (2), Wayne (2), Woodford (1)

2008

  • Number of Traps Set: 5373
  • Number of Moths Captured: 181
  • Number of Positive Counties: 22
  • Positive Counties: Boone (2), Boyd (8), Bracken (4), Campbell (116), Carter (1), Clark (1), Fayette (3), Fleming (1), Floyd (2), Greenup (6), Harrison (1), Jessamine (1), Johnson (2), Kenton (12), Lawrence (3), Lewis (1), Martin (1), Mason (1), Owen (1), Pendleton (8), Pike (4), Scott (2)

2009

  • Number of Traps Set:  7101
  • Number of Moths Captured:  88
  • Number of Positive Counties:  10
  • Positive Counties:  Boone (3), Bullitt (1), Campbell (55), Greenup (3), Kenton (14), Lawrence (4), Pendleton (3), Pike (3), Shelby (1), Spencer (1)

2010

  • Number of Traps Set:  4633
  • Number of Moths Captured:  42
  • Number of Positive Counties:  9
  • Positive Counties:  Campbell (27), Carter (2), Fayette (1), Greenup (5), Jefferson (2), Kenton (1), Mason (2), Oldham (1), Scott (1)

2011

  • Number of Traps Set:  4602
  • Number of Moths Captured:  23
  • Number of Positive Counties:  5
  • Positive Counties:  Boone (1), Bullitt (1), Campbell (17), Kenton (3), Pike (1)

2012

  • Number of Traps Set:  2938
  • Number of Moths Captured:  8
  • Number of Positive Counties:  4
  • Positive Counties:  Boone (1), Campbell (4), Carter (2), Fayette (1)

2013

  • Number of Traps Set:  2634
  • Number of Moths Captured:  9
  • Number of Positive Counties:  8
  • Positive Counties:  Campbell (1), Floyd (1), Johnson (1), Kenton (1), Lawrence (1), Lewis (1), Magoffin (1), Mason (2)

2014

  • Number of Traps Set:  7065 Detection, 12 Delimiting, 546 Slow the Spread
  • Number of Moths Captured:  3
  • Number of Positive Counties:  3
  • Positive Counties:  Boyd (1, STS), Fayette (1, Detection), Pendleton (1, Detection)

2015

  • Number of Traps Set:  7328 Detection, 41 Delimiting, 505 Slow the Spread Detection, 9 Slow the Spread Delimiting
  • Number of Moths Captured:  84 in Detection Survey, 86 in Slow the Spread, 1 in US Forest Service trap
  • Number of Positive Counties:  27 in Detection Survey, 5 in Slow the Spread Survey, 1 in US Forest Service survey
  • Positive Counties (Detection):  Boone (2), Breathitt (13), Clark (1), Elliott (2), Fayette (2), Fleming (1), Floyd (7), Gallatin (2), Grant (2), Greenup (1), Henry (2), Johnson (1), Knott (7), Lee (6), Leslie (1), Letcher (1), Madison (1), Magoffin (10), Menifee (4), Montgomery (3), Morgan (3), Nicholas (1), Owen (3), Perry (1), Powell (2), Scott (2), Wolfe (3)
  • Positive Counties (Slow the Spread):  Boyd (1), Floyd (7), Letcher (5), Martin (1), Pike (72)
  • Positive Counties (US Forest Service):  Clay (1)

2016

  • Number of Traps Set:  7216 Detection, 109 Delimiting, 540 Slow the Spread Detection, 44 Slow the Spread Delimiting
  • Number of Moths Captured:  21 in Detection Survey, 58 in Slow the Spread
  • Number of Positive Counties:  16 in Detection Survey, 5 in Slow the Spread Survey
  • Positive Counties (Detection):  Bell (1), Boone (1), Boyd (1), Bracken (1), Carter (3), Clark (1), Fayette (1), Greenup (1), Knott (1), Letcher (3), Madison (1), Oldham (1), Pendleton (2), Washington (1), Whitley (1), Wolfe (1)
  • Positive Counties (Slow the Spread):  Johnson (1), Knott (1), Lawrence (2), Letcher (1), Pike (53)

Gypsy Moth Eggs

Counties Positive for Gypsy Moth 2005

Counties Positive for Gypsy Moth 2006

Counties Positive for Gypsy Moth 2007

Counties Positive for Gypsy Moth 2008

Counties Positive for Gypsy Moth 2009

Counties Positive for Gypsy Moth 2010

Counties Positive for Gypsy Moth 2011

2012 Gypsy Moth Captures in Numbers

2013 Gypsy Moth Captures in Numbers

2014 Gypsy Moth Captures in Numbers

2015 Gypsy Moth Captures in Numbers