Achyra

Guenée, 1849

Species Guides

Achyra is a of in the Crambidae, first described by Achille Guenée in 1849. The genus belongs to the Pyraustinae and contains that are primarily known as agricultural pests. The most widely documented species, Achyra rantalis (garden webworm), feeds on soybean foliage and other plants, with larvae that produce protective silk webs. are attracted to ultraviolet light and have been documented at blacklighting events in North America.

Achyra by (c) David Dodd, some rights reserved (CC BY), uploaded by David Dodd. Used under a CC-BY license.

Achyra by (c) Ken-ichi Ueda, some rights reserved (CC BY), uploaded by Ken-ichi Ueda. Used under a CC-BY license.

Achyra by (c) Steve Kerr, some rights reserved (CC BY), uploaded by Steve Kerr. Used under a CC-BY license.

Pronunciation

How to pronounce Achyra: //ˈækɪrə//

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Images

Distribution

Distribution records exist from Vermont and other locations in the United States. The has been documented at blacklighting events in California, suggesting presence in western North America.

Diet

Larvae of Achyra rantalis feed on soybean foliage. The has been observed producing silk webs that bind foliage together, offering protection from natural enemies and adverse weather.

Host Associations

Glycine max - herbivoresoybean foliage

Behavior

are attracted to ultraviolet light and have been collected at blacklighting displays. Larvae produce silk webs that bind foliage together.

Human Relevance

Achyra rantalis is recognized as a pest of seedling soybeans. Severe , though uncommon, can result in stand loss. No established treatment thresholds exist, but scouting is recommended when soybeans emerge, with application considered if larvae are abundant and stands are threatened.

Similar Taxa

Pyralidae (sensu lato)Formerly classified in Pyralidae; Crambidae was elevated to status, separating these groups

More Details

Taxonomic history

Achyra was originally described in 1849. The was historically placed in Pyralidae but is now classified in Crambidae following elevation of that group to status.