Coeini
Cecropians and Allies
Coeini is a tribe of ( ) restricted to the . The tribe comprises six recognized : Baeotus, Colobura, Historis, Pycina, Smyrna, and Tigridia. Members are commonly referred to as "Cecropians and Allies" in reference to their association with Cecropia trees. The group is characterized by reduced forelegs typical of the Nymphalidae family.
Pronunciation
How to pronounce Coeini: /ˈkoʊ.iːˌnaɪ/
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Identification
Coeini can be distinguished from other Nymphalinae tribes by a combination of Neotropical distribution and morphological traits associated with their . Historis display large on the . Colobura species have distinctive angular margins. Tigridia (sometimes placed in Nymphalini) shows orange and black patterned wings. Smyrna species exhibit rapid, erratic patterns. The tribe lacks the pronounced seen in some related Nymphalini genera.
Images
Distribution
Restricted to the , encompassing Central America, South America, and the Caribbean. Individual show varying ranges within this region; Historis and Smyrna are widespread, while others have more restricted distributions.
Host Associations
- Cecropia - larval Multiple Coeini are associated with Cecropia (Urticaceae), particularly Historis and Smyrna. This relationship is the basis for the "Cecropians."
- Piper - larval Some , including Historis, have been recorded using Piper (Piperaceae) as larval .
- Urticaceae - larval Broader -level associations have been documented for several .
Behavior
of Historis and Smyrna are known for rapid, darting patterns and habit of perching on tree trunks with closed, relying on cryptic undersides. Some are attracted to rotting fruit and tree sap. often feed gregariously on plants.
Ecological Role
function as on fast-growing pioneer trees (Cecropia, Piper), potentially influencing dynamics in Neotropical forests. may contribute to through sap-feeding and fruit-feeding behaviors.
Similar Taxa
- NymphaliniTigridia is sometimes placed in Nymphalini rather than Coeini, indicating close morphological similarity. Nymphalini shares reduced forelegs and Neotropical distribution with some members, but differs in associations and pattern elements.
- JunoniiniBoth tribes occur in the Neotropics and share brush-footed . Junoniini typically shows more pronounced patterns and different preferences (Acanthaceae, Plantaginaceae).
More Details
Taxonomic Uncertainty
The placement of Tigridia remains disputed, with some assigning it to Nymphalini. This reflects ongoing uncertainty about tribal boundaries within Nymphalinae.
Generic Composition
The tribe contains six : Baeotus (), Colobura (2 ), Historis (2 species), Pycina (monotypic), Smyrna (2 species), and Tigridia (monotypic). This low diversity contrasts with more speciose tribes in the .