Coliadinae

Yellows, Sulphurs, Yellows and Sulphurs

Genus Guides

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Coliadinae is a of Pieridae butterflies comprising approximately 300 described , commonly known as yellows or sulphurs for their characteristic coloration. The subfamily is divided into two well-supported : the Coliadini (clouded yellows, brimstones, and sulphurs) and the Euremini (grass yellows). Many species exhibit strong , with males often displaying ultraviolet-reflective wing patches absent in females. The group has a global distribution with particularly high diversity in tropical and subtropical regions.

Phoebis neocypris by (c) Eduardo Luis Beltrocco, some rights reserved (CC BY), uploaded by Eduardo Luis Beltrocco. Used under a CC-BY license.Phoebis by (c) Nicolas Olejnik, some rights reserved (CC BY), uploaded by Nicolas Olejnik. Used under a CC-BY license.Colias eurytheme by (c) Roger Rittmaster, some rights reserved (CC BY), uploaded by Roger Rittmaster. Used under a CC-BY license.

Pronunciation

How to pronounce Coliadinae: /kɔlɪˈædɪniː/

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Identification

Most in Coliadinae display yellow, orange, or white wing coloration, often with black marginal markings. Males and females are frequently distinguishable by UV-reflective properties visible to conspecifics but not human observers; males typically possess brilliant UV reflections on wings that females lack. structure, particularly sensilla styloconica , differs from the related Pierinae and may be useful in classification. The subfamily can be distinguished from Pierinae by proboscis ultrastructure and molecular phylogenetic characters.

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Distribution

Global distribution spanning tropical, subtropical, and temperate regions. In North America, 36 range from Mexico to northern Canada. The Euremini (grass yellows) originated in the New World approximately 26 million years ago and subsequently dispersed to Asia, Africa, and Australasia. High diversity occurs in the Indo-Australian and Caribbean archipelagoes.

Diet

feed on nectar. Larval plants include legumes (Fabaceae), particularly in the Senna.

Life Cycle

Complete with , larva, pupa, and stages. Specific details vary among and .

Behavior

Seasonal patterns have been documented in some , such as northward spring movements in North American . Courtship leading to copulation has been observed. engage in flower-probing feeding behavior using a equipped with chaetica, sensilla basiconica, and sensilla styloconica.

Ecological Role

function as through nectar-feeding activities. Larvae serve as herbivores on plants, with documented associations to leguminous vegetation.

Similar Taxa

  • PierinaeSister within Pieridae; differs in structure, particularly in size, distribution, and of sensilla styloconica. Pierinae typically lack the strong UV characteristic of many Coliadinae.

More Details

Systematic classification

Molecular phylogenetic analyses support two reciprocally monophyletic tribes: Coliadini (including Colias, Gonepteryx, Phoebis, Catopsilia, Anteos, and others) and Euremini (grass yellows including Eurema sensu lato). Historical three-tribe classifications (Euremini, Goniopterygini, Coliadini) are not supported by molecular data.

Biogeographic history

The grass yellows (Euremini) originated in the New World during the Oligocene and achieved pantropical distribution through trans-Pacific to Asia in the early Miocene, followed by diversification and range expansion to Africa and Australasia. Island-to-mainland dispersal events were equally or more common than mainland-to-island in this group.

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Sources and further reading