Ctenuchina

Handmaidens

Genus Guides

6

Ctenuchina is a subtribe of tiger moths within the Erebidae, commonly known as handmaidens. These are and exhibit striking coloration that mimics unpalatable beetles and . Males possess specialized scent-dispersing structures called androconia, used in communication during courtship. The group is taxonomically diverse, with many distributed in the Neotropical region.

Tyria by (c) ilkka havukkala, some rights reserved (CC BY), uploaded by ilkka havukkala. Used under a CC-BY license.Euchaetes albicosta by no rights reserved, uploaded by Andreas Manz. Used under a CC0 license.Arachnis aulaea by (c) Laura Gaudette, some rights reserved (CC BY), uploaded by Laura Gaudette. Used under a CC-BY license.

Pronunciation

How to pronounce Ctenuchina: /ktɛˈnʌtʃɪnə/

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

Identification

Members of Ctenuchina are distinguished from related subtribes by their activity pattern and -mimicking coloration. Males possess androconia—specialized scent-dispersing structures on the wings or body used in communication. Specific within Ctenuchina exhibit distinct morphological traits: for example, Ptychotrichos have forewings more than twice as long as hindwings, a hairbrush on the surface of the inner margin of the hindwing, a sigmoid vinculum, bilobed uncus, and a valva with a finger-like projection.

Images

Distribution

Primarily Neotropical region, with documented in Peru, Mexico, and other parts of Central and South America. Some such as Ctenucha occur in North America.

Behavior

activity distinguishes Ctenuchina from most groups. Males use androconia to disperse during courtship. Some are attracted to baits. Members exhibit extensive intraspecific variation in wing patterns, complicating species identification based on alone.

Similar Taxa

  • EuchromiinaAlso a subtribe of -mimicking tiger moths with habits; historically classified together in the former Ctenuchinae. Euchromiina and Ctenuchina were recovered as reciprocally monophyletic in phylogenetic analyses, though they share convergent mimicry traits.
  • SyntominiFormerly classified as a tribe within the same (Ctenuchinae) before taxonomic reorganization; now elevated to tribal rank as Syntomini. Distinguished by different morphological and behavioral characteristics.

More Details

Taxonomic History

Ctenuchina were previously classified as the Ctenuchinae within . When Arctiidae was reclassified as subfamily Arctiinae within Erebidae, the former tribes Ctenuchini, Euchromiini, and Syntomini were reorganized: Ctenuchina and Euchromiina became subtribes within tribe Arctiini, while Syntomini was elevated to tribal rank.

Tags

Sources and further reading