Arrowhead scale - Unaspis yanonensis
Effective: August 18, 2010 - December 31, 2020
Taxonomic Position: Hemiptera : Diaspididae
Pest Type: Insects
Pest Code (NAPIS): IRAKCVA
This pest is a member of the following surveys: Citrus
These Approved Methods are appropriate for: 2020, 2019, 2018, 2017, 2016, 2015
Pest Information
CAPS Pest Datasheet: https://download.ceris.purdue.edu/file/3093
Pest Tracker: https://pesttracker.org/pest/IRAKCVA
Hosts Identified in the CAPS Host Matrix:
Citrus
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 | See the visual inspection excerpt from the guidelines. | 3031 - General Visual Observation |
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: Adult females can be distinguished at the genus and species level based on morphological characters observed on cleared slide-mounted specimens. Species level identification cannot be performed on nymphs or adult males. See the CPHST Pest Datasheet for more information.
Mistaken Identities:
Other armored scales of citrus, Lepidosaphes spp., Unaspis citri, and Unaspis euonymi.
Notes:
Unaspis citri is present in Florida and Louisiana and shares many of the same host plants as U. yanonensis. Unaspis euonymi occurs throughout the United States and is most often found on Euonymus spp., although it is known to occur on other hosts.
References
If you are unable to find a reference, contact STCAPS@usda.gov. See the CAPS Pest Datasheet for all references.