Chrysodeixis chalcites (effective March 16, 2026

Golden twin spot moth - Chrysodeixis chalcites

Effective: March 16, 2026 - March 16, 2026

Taxonomic Position: Lepidoptera : Noctuidae

Pest Type: Insects

Pest Code (NAPIS): ITBCQGA

This pest is a member of the following surveys: Solanaceous Hosts, Soybean

These Approved Methods are appropriate for: 2026

Pest Information

CAPS Pest Datasheet: https://caps.ceris.purdue.edu/file-3027/

Pest Tracker: https://pesttracker.org/pest/ITBCQGA

Hosts Identified in the CAPS Host Matrix:

Bean, fresh; Potato; Soybean; Tomato

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
Trap	50 - Tri-colored bucket trap	3001 - General Trapping Procedure
Trap	51 - All-green bucket trap	3001 - General Trapping Procedure

Trap Spacing:

When trapping for more than one species of moth, separate traps for different moth species by at least 20 meters (65 feet).

Method Notes:

The tri-colored bucket trap is also known as the unitrap. It has a green canopy, yellow funnel, and white bucket and is used with a dry kill strip. For instructions on using the trap, see the Plastic Bucket Trap Protocol.

Research on related moths has shown tri-colored bucket traps and all-green bucket traps are both able to capture moths, but tri-colored bucket traps are more effective. All-green bucket traps may be used in areas where tri-colored bucket traps are deemed unsuitable by surveyors.

Mesh screens are now available for purchase through IPHIS survey supply. Product name: Plastic Bucket Traps, Mesh Screen.

Approved Lure(s)

NAPIS Code	Product	Dispenser	Effectiveness	Compound(s)
8	Chrysodeixis chalcites Lure	rubber septum	28 days	Z7-12Ac Z9-14Ac Z9-12Ac

Lure Attachment:

Attaching lures to traps

IMPORTANT: Do not include lures for other target species in the trap when surveying for this target.

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.

Likelihood of Establishment Map:

A Likelihood of Establishment Map is now available. This survey should only be considered in the states with appropriate conditions and suitable hosts for this moth. The map was produced by the SAFARIS Team. SAFARIS is a modeling framework that enables PPQ to quickly respond to emergencies, efficiently survey for pests, and assess potential pest impacts by collecting critical geospatial data and developing predictive models. SAFARIS is developed and maintained by the NC State University, Center for Integrated Pest Management (CIPM) with support from the PPQ-S&T Plant Pest Risk Analysis (PPRA) Laboratory. The SAFARIS team used a likelihood of establishment model for golden twin spot moth occurrence in the continental United States to support CAPS survey planning. The model predicts the suitability of an area for box tree moth occurrence based on the likelihood of favorable conditions for the pest occurring using tools and data within SAFARIS. The detailed method used in this assessment is described here.

Key Diagnostic or Identification

Approved Method(s)

ID/Diagnostic:

Morphological: Identification of Chrysodeixis adults (chalcites or eriosoma) requires dissection of the male genitalia; use Passoa, 1995, as an aid. Molecular analysis is required for identification at the species level.

Mistaken Identities:

Present in U.S.: Pseudoplusia includens Not present in U.S.: Chrysodeixis acuta

Guides

Sample Submission Guidance for Lepidoptera

References

If you are unable to find a reference, contact STCAPS@usda.gov. See the CAPS Pest Datasheet for all references.