Empyreuma

Hübner, 1818

spotted oleander caterpillar moth

Species Guides

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Empyreuma is a of tiger moths in the Erebidae, containing three . The genus name derives from the Greek ἐμπύρευμα, meaning "a live coal covered with ashes." exhibit striking aposematic coloration with orange and black patterns that mimic stinging . Larvae feed exclusively on oleander (Nerium oleander), a toxic plant containing cardiac glycosides that the caterpillars sequester for their own defense. The genus is notable for its acoustic courtship , with males producing sounds detected by female tympanic organs.

Empyreuma pugione 343012016 by geosesarma. Used under a CC BY 4.0 license.Empyreuma affinis Larvae by Shaina Noggle of GothMoths. Used under a CC BY-SA 3.0 license.Empyreuma affinis Pupa by Shaina Noggle of GothMoths. Used under a CC BY-SA 3.0 license.

Pronunciation

How to pronounce Empyreuma: /ɛmˈpaɪˌruːmə/

These audio files are automatically generated. While they are not always 100% accurate, they are a good starting point.

Identification

display vivid orange and black warning coloration with -like appearance. Spotted oleander caterpillar (E. pugione/affinis) has light-colored spots and reddish-brown hair tufts, contrasting with the dark spots and black hair tufts of the related oleander caterpillar (Syntomeida epilais). Feathery in males detect female .

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Habitat

Associated with cultivated and ornamental oleander plants in subtropical and tropical regions. In Florida, found in residential and commercial landscapes where oleander is grown.

Distribution

Native to Caribbean region; introduced to Florida where first recorded in Boca Raton in 1978. Also present in French West Indies.

Diet

Larvae feed exclusively on oleander (Nerium oleander).

Host Associations

  • Nerium oleander - larval food planttoxic Apocynaceae containing cardiac glycosides sequestered by larvae

Life Cycle

Complete with , larval (caterpillar), pupal, and stages. Specific duration of stages not documented.

Behavior

are day-flying, unusual for . Courtship involves male-produced acoustic signals and female tympanic organ response; males and females engage in ultrasonic duets. Females also use for mate attraction. Larvae feed solitarily rather than in .

Ecological Role

regulated by natural and . Cardiac glycoside makes larvae and unpalatable to vertebrate predators, contributing to aposematic defense systems in the .

Human Relevance

Minimal economic impact; larvae cause minor damage to ornamental oleander and control measures are generally unnecessary. Valued for aesthetic appeal and as example of mimicry and chemical defense in insects.

Similar Taxa

  • Syntomeida epilaisSimilar oleander-feeding tiger moth with mimicry and aposematic coloration; distinguished by larval spot and hair coloration patterns
  • Other Arctiinae tiger mothsShare and defensive chemical traits, but differ in plant specialization and coloration patterns

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