Euchaetes helena
Cassino, 1928
Euchaetes helena is a tiger moth in the Erebidae, Arctiinae. It occurs in arid and semi-arid regions of Texas (Davis Mountains) and Mexico (Coahuila). Based on morphological and barcode data, it is the probable sister to Euchaetes nancyae, with which it shares traits including an untufted female , well-developed male abdominal coremata, and absence of metepisternal microtymbals. The larval plant remains unknown; larvae have been observed to reject Asclepiadaceae in feeding trials.
Pronunciation
How to pronounce Euchaetes helena: /juːˈkeɪtiːz həˈliːnə/
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Identification
can be distinguished from similar Euchaetes by genitalic structure and barcode data (minimum 6.61% divergence from E. nancyae). Shares diagnostic traits with a species group including E. zella, E. perlevis, and E. fusca: untufted female , well-developed male abdominal coremata, and lack of metepisternal microtymbals. Superficially similar to Pygarctia species but structurally distinct.
Images
Habitat
Arid and semi-arid .
Distribution
Texas (Davis Mountains), USA; Coahuila, Mexico.
Similar Taxa
- Euchaetes nancyaeProbable sister based on morphological similarities and barcode data; distinguished by structural and molecular variation with minimum 6.61% divergence.
- Pygarctia speciesSuperficially similar in appearance but structurally distinct; E. helena belongs to a different with different genitalic .
- Euchaetes zella, E. perlevis, E. fuscaShare diagnostic traits including untufted female , well-developed male abdominal coremata, and lack of metepisternal microtymbals.
Sources and further reading
- BugGuide
- GBIF taxonomy match
- iNaturalist taxon
- NCBI Taxonomy
- Catalogue of Life
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