1. Lori Spears Department of Biology Utah State University
Updates on Brown Marmorated Stink Bug and Spotted Wing Drosophila in Utah
Lori Spears
Department of Biology
Utah State University

2. Spotted Wing Drosophila (Drosophila suzukii)
Native to southeast Asia
Established in Hawaii in 1980s
First detected in California in 2008 and Utah in 2010
Most Drosophila spp. attack rotting fruit
Drosophila suzukii (SWD) differs in preferentially attacking ripe and ripening fruit
Female Male

5. All Years 2014 Year Total # of SWD Date of 1st trap capture County
2010 73
Aug 18
Davis
2011 61
Sep 8
2012 16
Sep 17
2013 23
Sep 25
2014
3582
Jun 2 / Aug 12
6 counties
2014
County
Total # of SWD
Date of 1st trap capture
Rich
206
Sep 22
Cache
2250
Aug 12
Box Elder
397
Sep 15
Weber
260
Sep 29
Davis
451
Jun 2 / Sep 15
Utah 18

6. All Years 2014 Year Total # of SWD Date of 1st trap capture County
2010 73
Aug 18
Davis
2011 61
Sep 8
2012 16
Sep 17
2013 23
Sep 25
2014
3582
Jun 2 / Aug 12
6 counties
2014
County
Total # of SWD
Date of 1st trap capture
Rich
206
Sep 22
Cache
2250
Aug 12
Box Elder
397
Sep 15
Weber
260
Sep 29
Davis
451
Jun 2 / Sep 15
Utah 18

7. Year
Total # of SWD
Date of 1st trap capture
2010 73
Aug 18
2011 61
Sep 8
2012 16
Sep 17
2013 23
Sep 25
2014
451
Jun 2 / Sep 15

8. 2014 County Total # of SWD Date of 1st trap capture Rich 206 Sep 22
Cache
2250
Aug 12
Box Elder
397
Sep 15
Weber
260
Sep 29
Davis
451
Jun 2 / Sep 15
Utah 18

9. SWD Monitoring (Adult Activity)
2 T yeast, 8 T sugar, 24 fl oz water, 1-2 drops of unscented dish soap (4 traps)
Place trap in fruit zone
Check trap and change bait weekly
Pheromone-baited traps with ACV as drowning solution

10. SWD Monitoring (Suspicious Fruit)
Sugar dunk: 1 C warm water, ¼ C sugar
Salt extraction: 1 T salt, 1 C warm water

11. SWD Management (Cultural Control)
Harvest early and continue to remove fruit as they ripen
Eliminate fallen fruit and infested fruit
Prune plants to maintain an open canopy
Repair leaking irrigation lines and minimize overhead irrigation
Identify and remove alternative host plants near your crops

12. SWD Management (Biological Control)

13. SWD Management (Chemical Control)
Organophosphate – Malathion
Pyrethroids:
Asana (esfenvalerate)
Danitol (fenpropathrin)
Mustang Max (zeta-cypermethrin)
Brigade (bifenthrin)
Spinosyns:
Delegate (spinetoram)
Entrust (spinosad)

15. Brown Marmorated Stink Bug (Halyomorpha halys)
Native to east Asia
First detected in Pennsylvania in 1996 and Utah in 2012
Has an expansive host range, including fruits, vegetables, landscape ornamentals, and some row crops
Is also considered a nuisance pest

18. BMSB Activity in Northern Utah
Year
Total # of BMSB found
County
2012 2
Salt Lake
2013 5
Salt Lake and Utah
2014
31*
Most specimens (2014) were found on the Univ. of Utah campus
Catalpa trees may act as wild hosts

21. Bmsb Look-alikes

22. BMSB Monitoring Pheromone-baited pyramid traps
Visual searches / beating sheets

23. BMSB Management (Cultural Control)
Place screens over windows, doors, and vents
Remove window air conditioners
Repair caulking cracks

24. BMSB Management (Chemical Control)
BMSB can be difficult to manage
Movement between habitats
Cryptic, difficult to sample
Poor response to insecticides
Evidence of resistance development
Repopulation occurs through migration from non-treated areas

25. BMSB Management (Biological Control)
Parasitoid from China
> 50% egg parasitism in China
Low levels of parasitism in the U.S. (4%)

27. Needs Assessment (Research and Extension Activities)
USDA-ARS-NIFA SCRI Planning Grant
We need your help!

28. BMSB Needs Assessment (Extension and Research Priorities)
What BMSB host crops do you grow? Circle all that apply. Please also indicate the area grown for each crop (i.e., less than 1 acre, 1-10 acres, acres, acres, acres, or more than 100 acres).
Peach acres
Pear
Apricot
Apple less than 1 acre
Cherry
Nectarine …

29. BMSB Needs Assessment (Extension and Research Priorities)
What BMSB extension activities do you consider most important? Rank priorities numerically with 1 being the highest priority, 2 being the next, etc. Please rank all choices.
Activity
Rank
Education programs to growers and the general public 15
Educational programming for structural and landscape industries 7
Deliver economic injury thresholds 6
Coordinate efforts of state and regional extension programs 11
Online management guides 1
Raise awareness of importance of BMSB as pest—APHIS, local political channels 10
Use BMSB as an opportunity to educate children 9
Educating professionals to pest ID and diagnosis of injury 14
Education programs relevant to development of biological control projects 4
Include education programs relevant to classical biological control 8
Educational programs relevant to invasive biology using BMSB 16
Develop revised and unified management plans 2
Initiate public awareness campaigns (e.g., posters, public service announcements, educational materials, social media) 13
Develop treatment recommendations and guidelines for urban environments 3
Extension outreach and education programming for urban environment/homeowners 12
Real time pest alerts 5

33. Stars indicate date of first trap capture