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Red Spots on Nepenthes Leaves: Natural Nectar Glands, Not Scale

Lisa's 5+ year old N. 'Miranda' and N. ventricosa (south window, sphagnum/sand) have indented red spots on leaves and dewy sap on pitchers/stems. She suspects scale.

Diagnosis: Normal Pigmented Nectar Glands

Red spots are anthocyanin pigments, not insects.
Often appear in high light; some clones produce them routinely.
They function as extrafloral nectaries—luring ants/beetles up the vine to pitchers.
Christopher's own plants show identical spots; nectar sometimes drips more from leaves than pitchers.

No treatment needed. Continue removing only truly dead leaves.

Carnivorous Plants: Pittosporum Leaf Spot: Fungal Disease and Organic Treatment; Tea Scale on Camellia: Yellow Leaves, Black Spots, and Spring Treatment Plan; Nepenthes Scale and Sooty Mold: Insecticidal Soap for Scale, Ignore Mold; Nepenthes truncata Spots: Light Color vs. Fungus vs. Pest Damage; Red Spots on Nepenthes Miranda: Sun Stress, Not Damage; Brown Spots on Nepenthes ventricosa: Thrips and Rust Fungus; Nepenthes Rust Spots: Cosmetic Fungal Issue from Nectar, Not a Health Crisis; Treating Scale on Nepenthes with Systemic Insecticide; Nepenthes alata Brown Spots After Late Indoor Move; Scale or Mealybugs on Mixed Houseplants: Dual Treatment Strategy

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