Allium leaf miner - Phytomyza gymnostoma
Effective: April 22, 2016 - December 31, 2019
Taxonomic Position: Diptera : Agromyzidae
Pest Type: Insects
Pest Code (NAPIS): IOABBPA
These Approved Methods are appropriate for: 2019, 2018, 2017
Pest Information
CAPS Pest Datasheet: https://download.ceris.purdue.edu/file/4029
Pest Tracker: https://pesttracker.org/pest/IOABBPA
Human and Animal Pathogens Transmitted:
Not known to transmit any human or animal pathogens.
Pest Pathogens and Organisms Vectored:
Not known to vector any pathogens or other associated organisms.
Survey
Approved Method(s)
| Method | Detail | NAPIS Survey Method |
|---|---|---|
| Visual | CPHST Datasheet near completion. | 3031 - General Visual Observation |
Method Notes:
The approved survey method for Phytomyza gymnostoma is visual inspection for signs of damage in combination with collection of adults, if damage is observed. Other methods may be used in addition to visual inspection; however, visual inspection is the only method approved for negative data.
Yellow sticky cards and water pan traps are used for monitoring and timing of insecticide applications in areas where the pest is established. However, in Pennsylvania, yellow sticky cards were not shown to be effective in capturing the flies compared to hand collection of adults.
If you have the capability to rear larvae and pupae, you may do so. However, the spring-collected flies have been observed to have a dormant period from mid- to late May until hatch in late summer; flies collected in the fall would likely need to overwinter before hatch.
Since identification is made from adult specimens, please make every effort to collect adults. By collecting adults in the field, identification will be expedited.
Yellow sticky cards and water pan traps are used for monitoring and timing of insecticide applications in areas where the pest is established. However, in Pennsylvania, yellow sticky cards were not shown to be effective in capturing the flies compared to hand collection of adults.
If you have the capability to rear larvae and pupae, you may do so. However, the spring-collected flies have been observed to have a dormant period from mid- to late May until hatch in late summer; flies collected in the fall would likely need to overwinter before hatch.
Since identification is made from adult specimens, please make every effort to collect adults. By collecting adults in the field, identification will be expedited.
Survey Recommendations
The following are recommendations for executing the survey using the approved methods for pest surveillance. The recommendations are developed through literature review and consultation with subject matter experts.
Key Diagnostic or Identification
Approved Method(s)
ID/Diagnostic:
Morphological: Under review.
References
If you are unable to find a reference, contact STCAPS@usda.gov. See the CAPS Pest Datasheet for all references.