Horse chestnut leafminer - Cameraria ohridella
Effective: April 22, 2011 - December 31, 2013
Taxonomic Position: Lepidoptera : Gracillariidae
Pest Type: Insects
Pest Code (NAPIS): ITAPCBA
These Approved Methods are appropriate for: 2013, 2012
Pest Information
CAPS Pest Datasheet: https://download.ceris.purdue.edu/file/3296
Pest Tracker: https://pesttracker.org/pest/ITAPCBA
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 but damage may lead to invasion by secondary pests. Early leaf loss may cause the tree to be more susceptible to secondary infections and abiotic stresses.
Survey
Approved Method(s)
| Method | Detail | NAPIS Survey Method |
|---|---|---|
| Visual | See the CPHST pest datasheet for detailed survey instructions. | 3031 - General Visual Observation |
Trap Spacing:
When trapping for more than one species of moth, separate traps for different moth species by at least 20 meters (65 feet).
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. Positive identification should be performed by a taxonomist with expertise in the family Gracillariidae. For CAPS surveys, identification will be based on both larval specimens and leaf mines from the host tree.
Identification of adults requires genitalia dissection.
Identification of adults requires genitalia dissection.
Mistaken Identities:
Present in U.S.: Cameraria aesculisella is a North American species that mines Aesculus species. There are many similar-looking native species that resemble C. ohridella adults.
References
If you are unable to find a reference, contact STCAPS@usda.gov. See the CAPS Pest Datasheet for all references.