Grape Pest Survey- 3rd Week of June

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— Written By Rocio Davila and last updated by Hannah Burrack
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Glassy-winged sharpshooter (GWSS) detections continue in both of our Northeast sites, in Perquimans and Currituck Co., and we captured our first GWSS for this season in one of our Southeast locations.

Graphocephala versuta, where present, continues increasing in numbers except in our Northeast 1 and Northwest 2 sites both of which have made pesticide applications recently.

Grape berry moth catches where zero this week. This is likely because we are in between generations. If that is the case, we expect the next generation to occur in the next 3 to 4 weeks.

View previous week’s reports.

Note that these trap captures illustrate only the fluctuations in populations at our monitoring sites, and are necessarily not representative of population levels in any given vineyard. The only way to have an accurate assessment of populations in a specific vineyard is to trap and observe insects there.

Southwest Field 1

Rowan County (Muscadine grapes)
15 April 22 April 29  May 7 May 14 May 20 May 30 May 4 June
Three cornered alfalfa hopper (sticky traps)∗ 0 0 0 0 0 0 0 0
Three cornered alfalfa hopper (within field) 0 0 0 0 0 0 3 1
Three cornered alfalfa hopper (field edge) 0 0 0 0 0 0 0 1
Glassy -winged sharpshooter∗ 0 0 0 0 0 0 0 0
Phera insolita∗ 0 0 0 0 0 0 0 0
Graphocephala versuta∗ 0.3 0.2 0.2 0.7 0.2 0.2 0.2 2.7
Oncometopia orbona∗ 0 0 0 0 0 0 0.2 0.2
Grape berry moth∗ 0 0 0 0 0.2 0 0.3 0
Spotted lanternfly eggs 0 0 0 0 0 0 0 0
Spotted lanternfly nymphs 0 0 0 0 0 0 0 0
Spotted lanternfly adults 0 0 0 0 0 0 0 0

∗ Average number per trap

♦ Number  of Spotted Lanternfly per 2 transects of 100 m

Rowan County (Muscadine grapes)
14 June 20 June
Three cornered alfalfa hopper (sticky traps)∗ 0 0
Three cornered alfalfa hopper (within field) 0 1
Three cornered alfalfa hopper (field edge) 8 6
Glassy -winged sharpshooter∗ 0 0
Phera insolita∗ 0 0
Graphocephala versuta∗ 47.5 50.7
Oncometopia orbona∗ 0 0
Grape berry moth∗ 0 0
Spotted lanternfly eggs 0 0
Spotted lanternfly nymphs 0 0
Spotted lanternfly adults 0 0

∗ Average number per trap

♦ Number  of Spotted Lanternfly per 2 transects of 100 m

Southwest Field 2

 Rowan County (Vinfera grapes)
30 May 4 June 14 June 20 June
Three cornered alfalfa hopper (sticky traps)∗ 0.2 0.2 1.7 0.3
Three cornered alfalfa hopper (within field) 0 0 1 2
Three cornered alfalfa hopper (field edge) 0 1 3 0
Glassy -winged sharpshooter∗ 0 0 0 0
Phera insolita∗ 0 0 0 0
Graphocephala versuta∗ 0.7 8.2 11.3 46
Graphocephala prob. coccinea 0 0 0.2 0
Oncometopia orbona∗ 0.5 0.2 0 0
Grape berry moth∗ 0.1 0 0 0
Spotted lanternfly eggs♦ 0 0 0 0
Spotted lanternfly nymphs♦ 0 0 0 0
Spotted lanternfly adults♦ 0 0 0 0

∗ Average number per trap

♦ Number  of Spotted Lanternfly per 2 transects of 100 m

Northwest  Field 1

Wilkes County (Vinifera grapes)
18 April 26 April 1  May 7 May 13 May 21 May 29 May 3 June 
Three cornered alfalfa hopper (sticky traps)∗ 0 0 0 0 0 0 0 0
Three cornered alfalfa hopper (within field) 0 0 0 0 0 0 0 1
Three cornered alfalfa hopper (field edge) 0 0 0 0 0 0 0 0
Glassy -winged sharpshooter∗ 0 0 0 0 0 0 0 0
Phera insolita∗ 0 0 0 0 0 0 0 0
Graphocephala versuta∗ 0.2 3.3 8 21.6 8.2 19 26.7 3.5
Graphocephala prob. coccinea 0 0 0 0 0 0 0.3 0.3
Oncometopia orbona∗ 0 0 0 0.3 0.7 0.3 1.5 1.3
Grape berry moth∗ 0 0 0 0 0 0 0.7 1.4
Spotted lanternfly eggs♦ 0 0 0 0 0 0 0 0
Spotted lanternfly nymphs♦ 0 0 0 0 0 0 0 0
Spotted lanternfly adults♦ 0 0 0 0 0 0 0 0

∗ Average number per trap

♦ Number  of Spotted Lanternfly per 2 transects of 100 m

Wilkes County (Vinifera grapes)
11 June 19 June
Three cornered alfalfa hopper (sticky traps)∗ 0 0.3
Three cornered alfalfa hopper (within field) 0 3
Three cornered alfalfa hopper (field edge) 0 0
Glassy -winged sharpshooter∗ 0 0
Phera insolita∗ 0 0
Graphocephala versuta∗ 1.2 4.3
Graphocephala prob. coccinea 0.5 0
Oncometopia orbona∗ 0.7 0
Grape berry moth∗ 0.3 0
Spotted lanternfly eggs♦ 0 0
Spotted lanternfly nymphs♦ 0 0
Spotted lanternfly adults♦ 0 0

∗ Average number per trap

♦ Number  of Spotted Lanternfly per 2 transects of 100 m

Northwest  Field 2

Surry County (Vinifera grapes)
18 April 26 April 1  May 7 May 13 May 21 May 29 May 3 June
Three cornered alfalfa hopper (sticky traps)∗ 0 0 0 0 0 0 0 0.2
Three cornered alfalfa hopper (within field) 0 0 0 0 0 0 0 0
Three cornered alfalfa hopper (field edge) 0 0 0 0 0 0 0 0
Glassy -winged sharpshooter∗ 0 0 0 0 0 0 0 0
Phera insolita∗ 0 0 0 0 0 0 0 0
Graphocephala versuta∗ 0.5 0.3 1.2 4.5 0.3 0.3 1 0
Graphocephala prob. coccinea 0 0 0 0 0 0 0 0
Oncometopia orbona∗ 0 0 0 0 0 0.3 0.2 0.2
Grape berry moth∗ 0 0 0 0 0 0 0.1 0
Spotted lanternfly eggs♦ 0 0 0 0 0 0 0 0
Spotted lanternfly nymphs♦ 0 0 0 0 0 0 0 0
Spotted lanternfly adults♦ 0 0 0 0 0 0 0 0

∗ Average number per trap

♦ Number  of Spotted Lanternfly per 2 transects of 100 m

Surry County (Vinifera grapes)
11 June 19 June
Three cornered alfalfa hopper (sticky traps)∗ 0 0.3
Three cornered alfalfa hopper (within field) 0 1
Three cornered alfalfa hopper (field edge) 0 4
Glassy -winged sharpshooter∗ 0 0
Phera insolita∗ 0 0
Graphocephala versuta∗ 0.5 6.2
Graphocephala prob. coccinea 0 0.2
Oncometopia orbona∗ 0.2 0.3
Grape berry moth∗ 0 0
Spotted lanternfly eggs♦ 0 0
Spotted lanternfly nymphs♦ 0 0
Spotted lanternfly adults♦ 0 0

∗ Average number per trap

♦ Number  of Spotted Lanternfly per 2 transects of 100 m

Northeast  Field 1

Perquimans County (Muscadine grapes)
8 May 15 May 22 May 28 May 5 June 12 June 18 June
Three cornered alfalfa hopper (sticky traps)∗ 0 0 0 0 0 0 0
Three cornered alfalfa hopper (within field) 0 0 1 1 0 0 2
Three cornered alfalfa hopper (field edge) 0 0 0 0 0 0 0
Glassy -winged sharpshooter∗ 0 0 0 0 0 0.5 1.2
Phera insolita∗ 0 0 0 0 0 0 0
Graphocephala versuta∗ 2.3 0.5 0.3 4.2 39.3 41.8 21.5
Oncometopia orbona∗ 0 0.2 0.7 0 0 0 0
Grape berry moth∗ 0 0 0 0 0 0 0
Spotted lanternfly eggs♦ 0 0 0 0 0 0 0
Spotted lanternfly nymphs♦ 0 0 0 0 0 0 0
Spotted lanternfly adults♦ 0 0 0 0 0 0 0

∗ Average number per sticky trap

♦ Number  of Spotted Lanternfly per 2 transects of 100 m

Northeast  Field 2

Currituck County (Vinifera grapes)
8 May 15 May 22 May 28 May 5 June 12 June 18 June
Three cornered alfalfa hopper (sticky traps)∗ 0 0 0 0 0 0 0
Three cornered alfalfa hopper (within field) 0 0 0 0 0 0 0
Three cornered alfalfa hopper (field edge) 0 0 0 0 0 0 0
Glassy -winged sharpshooter∗ 0 0 0 0 0 0 0.2
Phera insolita∗ 0 0 0 0 0 0 0
Graphocephala versuta∗ 0.2 0 0 0 0 0 0
Oncometopia orbona∗ 0.5 0.5 0.2 1 1.2 0 0
Grape berry moth∗ 0 0 0 0 0 0 0
Spotted lanternfly eggs♦ 0 0 0 0 0 0 0
Spotted lanternfly nymphs♦ 0 0 0 0 0 0 0
Spotted lanternfly adults♦ 0 0 0 0 0 0 0

∗ Average number per trap

♦ Number  of Spotted Lanternfly per 2 transects of 100 m

Southeast Field 1

 Johnston County (Muscadine grapes)
16 May 23 May 30 May 6 June 13 June 20 June
Three cornered alfalfa hopper (sticky traps)∗ 0 0 0 0 0 0
Three cornered alfalfa hopper (within field) 0 0 2 0 0 0
Three cornered alfalfa hopper (field edge) 0 0 0 0 1 0
Glassy -winged sharpshooter∗ 0 0 0 0 0 0
Phera insolita∗ 0 0 0 0 0 0
Graphocephala versuta∗ 0.2 0 0 0 2.7 0.3
Oncometopia orbona∗ 0 0.2 0.2 0 0 0
Grape berry moth∗ 0 0 0 0 0 0
Spotted lanternfly eggs♦ 0 0 0 0 0 0
Spotted lanternfly nymphs♦ 0 0 0 0 0 0
Spotted lanternfly adults♦ 0 0 0 0 0 0

∗ Average number per trap

♦ Number  of Spotted Lanternfly per 2 transects of 100 m

Southeast Field 2

 New Hanover County (Muscadine grapes)
16 May 23 May 30 May 6 June 13 June 20 June
Three cornered alfalfa hopper (sticky traps)∗ 0 0 0 0 0 0
Three cornered alfalfa hopper (within field) 0 0 0 0 0 0
Three cornered alfalfa hopper (field edge) 0 3 1 1 0 0
Glassy -winged sharpshooter∗ 0 0 0 0 0.2 0.3
Phera insolita∗ 0 0 0 0 0.2 0
Graphocephala versuta∗ 0 0 0 0.8 3.8 3.8
Graphocephala prob. coccinea 0 0 0 0 0.3 0.2
Oncometopia orbona∗ 0 0 0 0 0 0
Grape berry moth∗ 0 0 0 0 0 0
Spotted lanternfly eggs♦ 0 0 0 0 0 0
Spotted lanternfly nymphs♦ 0 0 0 0 0 0
Spotted lanternfly adults♦ 0 0 0 0 0 0

∗ Average number per trap

♦ Number  of Spotted Lanternfly per 2 transects of 100 m

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