Fauna
Insect

Hibiscus Harlequin Bug

Tectocoris diophthalmus

Also known as Cotton Harlequin Bug

Females exhibit remarkable maternal care, brooding over tight clusters of barrel-shaped eggs on host stems to defend them from parasitic wasps. Their brilliant jewel tones shift dramatically with sex, age, and temperature, acting as a vivid warning to visual predators of their unpalatable chemical defenses. Dense clusters of nymphs and adults routinely congregate on the ripening seed capsules of native hibiscus, kurrajong, and cotton plants.

ColorfulHerbivoreDiurnal
Hibiscus Harlequin Bug reference
(c) Sam Fraser-Smith, some rights reserved (CC BY) · 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 & preyHibiscus sap, Kurrajong seeds, Cotton bolls
Predators
  • Spiders
  • Parasitoid wasps
  • Insectivorous birds
ThreatsBroad-spectrum insecticides and removal of native host trees
HabitatsCoastal scrub, rainforest margins, urban gardens, and agricultural fields
Life span4–9 months
Classification
  1. OrderHemiptera
  2. FamilyScutelleridae
  3. GenusTectocoris
  4. SpeciesTectocoris diophthalmus
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: Check the ripening seed pods and leaf undersides of ornamental or native hibiscus trees.
  • Parental Behavior: Look for adult females standing vigil directly over compact egg clutches on stems.
  • Handling: Observe without grabbing, as agitated bugs can release a pungent chemical fluid.
Related species
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