Ourapterygini

Bruand d'Uzelle, 1846

Genus Guides

38

Ourapterygini is a large tribe of geometer moths within the Ennominae, described in 1846. The tribe is particularly diverse in the Neotropics and is considered the youngest tribe of its subfamily based on phylogenetic evidence. Members are distinguished by characteristic asymmetrical processes of the anellus, a derived trait present at least seasonally. Many exhibit -like appearance and partially , with conspicuous coloration that may serve as aposematic warning signals.

Eusarca confusaria P1400453a by 
xpda. Used under a CC BY-SA 4.0 license.- 6966 – Eutrapela clemataria (Smith, 1797) – Curve-toothed Geometer Moth - 51248920333 by Wildreturn. Used under a CC BY 2.0 license.Caripeta piniata -25992 Det. John L. Sperry Lake Katherine, Oneida County, Idaho. 24 June 1945 H.M. Bower (49551131962) by Robb Hannawacker. Used under a Public domain license.

Pronunciation

How to pronounce Ourapterygini: /ˌaʊrəpˌtɛrɪˈdʒaɪnaɪ/

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Identification

Asymmetrical processes of the anellus serve as a key diagnostic feature, though these may be present only seasonally. -like appearance, light yellowish coloration, and bold or reduced patterning distinguish many members from typical cryptic geometrid moths. Partial diurnality is unusual for the and may aid field recognition. Definitive identification requires examination of genitalic structures.

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Appearance

Many members are remarkably -like in overall appearance. Coloration tends toward light yellowish hues with either minimal pattern or quite bold markings, making some conspicuous rather than cryptic. Wing patterns vary from plain to striking. The tribe exhibits characteristic apomorphic asymmetrical processes of the anellus, at least seasonally. Body form and wing shape contribute to the non-typical, non-cryptic appearance for geometer moths.

Distribution

Particularly plentiful in the Neotropics. Broader distribution beyond this region is not clearly documented in available sources.

Seasonality

Characteristic anellus processes are present at least seasonally, suggesting seasonal variation in or reproductive structures.

Behavior

Contains more partially than is typical for geometer moths. At least some species are known to be noxious to .

Similar Taxa

  • Other Ennominae tribesOurapterygini is distinguished by asymmetrical anellus processes and is considered the youngest tribe of the ; other tribes generally lack these specific genitalic features and typically exhibit cryptic coloration rather than the conspicuous patterns seen in many Ourapterygini.
  • Other GeometridaeMost geometer moths exhibit cryptic coloration and ; Ourapterygini are frequently conspicuously colored and partially , with -like appearance.

More Details

Taxonomic status

Numerous Ennominae have not yet been assigned to a tribe, so genus lists for Ourapterygini remain preliminary.

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Sources and further reading