Fauna
Insect

North American Tarnished Plant Bug

Lygus lineolaris

Also known as Tarnished Plant Bug, TPB

Tarnished plant bugs use needle-like mouthparts to pierce tender plant tissue, injecting digestive enzymes that cause flower abortion and deformed fruit development. Adults display mottled brown, red, and yellow patterning accented by a distinct pale yellowish V-shaped mark on their back. Females overwinter under leaf litter or weed debris before emerging early in spring to deposit eggs into stems and leaf veins.

Agricultural PestHerbivoreWidespread
North American Tarnished Plant Bug reference1 / 7
(c) Katja Schulz, some rights reserved (CC BY), uploaded by Katja Schulz · cc-by
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Not EvaluatedConservation statusIUCN Red List categoriesLCNTVUENCREWEXNot Evaluated — not placed on the risk ladderRed List categories, explained →
Key facts
Diet & preyPlant sap, Flower buds, Developing fruit
Predators
  • Spiders
  • Lady beetles
  • Minute pirate bugs
ThreatsPesticides and targeted agricultural management
HabitatsAgricultural fields, orchards, gardens, weed patches, meadows
Life span1 to 2 months
Classification
  1. OrderHemiptera
  2. FamilyMiridae
  3. GenusLygus
  4. SpeciesLygus lineolaris
Range & activity
Range data is not available yet.
Safe observation
Interaction riskLow
  1. Low
  2. Moderate
  3. High
  4. Very high
Why interaction risk is low
Safe to observe at a normal distance.
Responsible observation
  • Spotting: Search terminal shoots, flower buds, and leaf undersides during warm, sunny mornings.
  • Identification: Look for the clear yellow or pale green V-shaped patch on the triangular scutellum.
  • Garden care: Maintain clean borders and control broadleaf weeds to minimize overwintering sites.
Related species
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