Lymantria dispar Scorecard

Species:  Lymantria dispar

Common Name:  Gypsy moth

Scorecard created on
Last Updated on

Results

Impact Total:22 / 35Impact = ( Spread + Damage - Benefit )

Ability to Respond Total:22 / 25Ability to Respond = ( Ease of Response + Tools in Place )

Confidence:High

Confidence Notes:

Impact

SpreadNotesScore
Spread RateHitchhikers on RVs, etc., larvae drift on silk threads, females are flightless for one "type/subspecies" but fly readily for the other one.5
Spread Amount500 hosts - hardwoods and conifers; Asian GM (same species) has a broader host range and females fly - this is the type most likely to invade CA by ship and lumber from Asia. Trapped detections are mostly European GM from Eastern US.5
DamageNotesScore
EcologicalNumerous native species can be impacted. Increased pesticide use by homeowners and others if GM establishes will have a negative impact on the environment.5
AgriculturalSome agricultural trees potentially impacted and impact on lumber.3
Infrastructure2
CulturalLandscape trees and home orchard damage.2
Health0
BenefitNotesScore
Ecological0
Agricultural0
Infrastructure0
Cultural0
Health0
Total22

Ability to Respond

Ease of ResponseNotesScore
DetectionStatewide detection program with GM pherormone traps occurs throughout CA every year.5
ControlEradication of incipient infestations by CDFA , though costly, have been very successful. Difficult to control once established.3
Tools in PlaceNotesScore
EntryA-rated pest from CDFA. All outdoor household goods from infested areas entering CA are inspected as are RV's and suspect vehicles.5
ControlA-rated pest from CDFA, a good pheromone exists for delimitation of populations with mandated eradication.5
OutreachWell publicized pest.4
Total22