Ethmia delliella

(Fernald, 1891)

Ladder-backed Ethmia Moth

Ethmia delliella, commonly known as the ladder-backed ethmia , is a small moth in the Ethmiidae (sometimes placed in Depressariidae). have a forewing length of 9–12 mm with distinctive black-and-white patterning that reflects metallic steel blue. The ranges from the Gulf region of Texas and Mexico southward through Central America to Rica. Adults are active from March to October in Texas and April to August elsewhere, with multiple per year.

Ethmia delliella by no rights reserved, uploaded by Chrissy McClarren and Andy Reago. Used under a CC0 license.

Pronunciation

How to pronounce Ethmia delliella: //ˈɛθ.mi.ə dɛl.iˈɛ.lə//

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

Identification

Distinguished from similar Ethmia by the specific pattern of black markings on white forewings with metallic steel blue reflections, combined with the brown-tinged hindwing apex. The upturned labial palps (resembling small horns between the ) help distinguish Depressariidae/Ethmiidae from superficially similar tortricid leafroller moths.

Images

Appearance

Small with forewing length of 9–12 mm. Forewings white with black markings that reflect metallic steel blue. Hindwings white, becoming slightly to strongly brown toward the apex.

Distribution

Gulf region of Texas and Mexico; west coastal plain of Mexico; Chiapas, Mexico; El Salvador; Rica.

Seasonality

March to October in Texas; April to August elsewhere in range. Multiple per year.

Diet

Larvae feed on Ehretia elliptica and Cordia alliodora.

Host Associations

  • Ehretia elliptica - larval plant
  • Cordia alliodora - larval plant

Life Cycle

Multiple per year.

Similar Taxa

Tags

Sources and further reading