Grape Pest Survey – 1st Week of June

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— Written By Rocio Davila
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As the summer approaches, the three-cornered alfalfa hopper, Spissistilus festinus, captures are picking up in both sticky traps and sweep net samples, but overall numbers still remain low.

YST with three cornered alfalfa hopper

Three cornered alfalfa hopper in sticky card. Rowan Co.

We are also starting to observe Japanese beetle and stink bugs occasionally, but we do not recommend pesticide use against these insects in most cases. Refer to the Southern Region Small Fruit Consortium Bunch Grape and Muscadine IPM Guides for pest management information.

Japanese beetle

Japanese beetle. New Hannover Co. Photo: Rocio Davila

Stink bug

Stink bug. Johnston Co. Photo: Rocio Davila

Graphocephala versuta is still the most abundant leafhopper in sticky traps followed by the broad-headed sharpshooter Oncometopia orbona.

For our previous scouting report, please check out Grape Pest Survey 5th Week of May.

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

Southwest Field 2

 Rowan County (Muscadine grapes)
30 May 4 June
Three cornered alfalfa hopper (sticky traps)∗ 0.2 0.2
Three cornered alfalfa hopper (within field) 0 0
Three cornered alfalfa hopper (field edge) 0 1
Glassy -winged sharpsooter∗ 0 0
Phera insolita∗ 0 0
Graphocephala versuta∗ 0.7 8.2
Oncometopia orbona∗ 0.5 0.2
Grape berry moth∗ 0.1 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 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
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

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
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

Northeast  Field 1

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

Southeast Field 2

 New Hanover County (Muscadine grapes)
16 May 23 May 30 May 6 June
Three cornered alfalfa hopper (sticky traps)∗ 0 0 0 0
Three cornered alfalfa hopper (within field) 0 0 0 0
Three cornered alfalfa hopper (field edge) 0 3 1 1
Glassy -winged sharpshooter∗ 0 0 0 0
Phera insolita∗ 0 0 0 0
Graphocephala versuta∗ 0 0 0 0.8
Oncometopia orbona∗ 0 0 0 0
Grape berry moth∗ 0 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

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