— Written By Rocio Davila and last updated by Hannah Burracken Español
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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.
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
