Spodoptera littoralis Scorecard

Common Name:  Egyptian cottonworm

Scorecard created on
Last Updated on

Results

Impact Total:18 / 35Impact = ( Spread + Damage - Benefit )

Ability to Respond Total:15 / 25Ability to Respond = ( Ease of Response + Tools in Place )

Confidence:High

Confidence Notes:

Impact

SpreadNotesScore
Spread RateThe adult moth flies or is carried with wind currents long distances; the eggs and/or larvae can be carried on plant material.5
Spread AmountIn the US, several species of Spodoptera are problematic and in CA, there are three significant pests in the genus; S. litoralis occurs in Africa, southern Europe, and Near East and would likely flourish in CA (and much of the U.S.).5
DamageNotesScore
EcologicalSome native species in natural areas would be affected. Increased insecticide usage would result to manage this pest if it established - this could threaten environmental quality.2
AgriculturalHundreds of hosts including fruit trees, grasses, legumes, medicinal crops, ornamentals, and vegetables, i.e. beans, beets, carrots, corn, cotton, lettuce, potato, tomato, apple, chrysanthemum, eucalyptus, alfalfa, plum, rice, sugarcane, rose, and wheat.5
Infrastructure0
CulturalHome gardens.1
Health0
BenefitNotesScore
Ecological0
Agricultural0
Infrastructure0
Cultural0
Health0
Total18

Ability to Respond

Ease of ResponseNotesScore
DetectionEggs and larvae detected visually, pheromones could be used in trapping programs (adult), Spodoptera is difficult to id to species, i.e. for the adults the males are needed and the aedeagus must be dissected and examined for identification.2
ControlBiological and chemical control exist, fecundity and diverse hosts make it very challenging; significant annual pesticide use needed in agriculture, Spodoptera species present in CA do have a group of predators and parasites that aid in control.2
Tools in PlaceNotesScore
EntryA-rated pest from CDFA.5
ControlA-rated pest from CDFA.5
OutreachA strong outreach program is not in place for the general public.1
Total15