Fauna
Insect

Common Tan Wave

Pleuroprucha insulsaria

Also known as Common Tan Wave Moth

Common tan waves are small, delicate geometer moths recognized by their subtle sandy-tan coloration crossed by wavy, pale transverse lines. Larvae are slender inchworms that graze on an exceptionally broad array of broadleaf trees, woody shrubs, and flowering composites. Adults fly readily from spring to autumn across temperate zones, frequently resting flat against foliage or tree bark during daylight hours.

NocturnalHerbivoreCryptic
Common Tan Wave reference
(c) John P Friel, some rights reserved (CC BY), uploaded by John P Friel · cc-by
—observations
—countries
—peak records
Not EvaluatedConservation statusIUCN Red List categoriesLCNTVUENCREWEXNot Evaluated — not placed on the risk ladderRed List categories, explained →
Key facts
Diet & preyOak foliage, Goldenrod foliage, Flower nectar
Predators
  • Bats
  • Insectivorous birds
  • Spiders
ThreatsArtificial light pollution and broad-spectrum pesticide use
HabitatsDeciduous woodlands, forest edges, meadows, and suburban gardens
Life spanSeveral weeks as adult (several months total life cycle)
Classification
  1. OrderLepidoptera
  2. FamilyGeometridae
  3. GenusPleuroprucha
  4. SpeciesPleuroprucha insulsaria
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
  • Night Observation: Set up a porch light or white sheet with a blacklight to attract adults after dark.
  • Gentle Inspection: Watch them rest flat against surfaces without touching their delicate wings, which shed scales easily.
  • Daytime Searching: Check the undersides of deciduous tree leaves along forest edges where adults shelter.
Related species
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Species set

Moonlight Marvels

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