Datana modesta

Beutenmüller, 1890

Datana modesta is a of prominent in the Notodontidae, first described by William Beutenmüller in 1890. It is native to North America and belongs to a whose larvae are known as feeders on woody plants. The species is part of a group of late-season defoliators that typically cause minor, aesthetic damage rather than significant tree health impacts.

Datana modesta by James Sullivan, Research Collection of J. B. Sullivan. Used under a Copyrighted free use license.

Pronunciation

How to pronounce Datana modesta: //ˈdætənə moʊˈdɛstə//

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Identification

Within the Datana, identification often requires examination of genitalia or detailed wing pattern analysis. D. modesta can be distinguished from such as D. integerrima (walnut caterpillar) and D. ministra (yellow-necked caterpillar) by subtle differences in forewing coloration and pattern, though precise field identification is challenging without specimen examination. Adults exhibit the characteristic robust body and relatively broad wings typical of the Notodontidae.

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Distribution

North America. Specific range details within this continent are not well documented in available sources.

Seasonality

are active during the warmer months; larvae are late-season feeders, typically observed in late summer and early fall.

Diet

Larvae feed on foliage of woody plants. Specific plant records for D. modesta are not documented in available sources, though in the Datana feed on a variety of trees and shrubs including walnut, hickory, oak, and sumac.

Life Cycle

Complete with , larva, pupa, and stages. Larvae are the primary feeding stage and are responsible for defoliation. occurs in soil. Detailed timing for this specific is not documented.

Behavior

Larvae of Datana are gregarious, feeding in groups during early instars before becoming more solitary as they mature. This results in localized defoliation patches. are and attracted to light.

Ecological Role

As a folivore, larvae contribute to nutrient cycling through defoliation. They serve as prey for various and , including thread-waisted wasps in the Ammophila. levels are typically regulated by natural enemies.

Human Relevance

Larvae may cause minor defoliation of ornamental and shade trees, but damage is generally aesthetic and does not threaten tree health. Management is rarely necessary; when warranted, mechanical removal or targeted applications may be used.

Similar Taxa

  • Datana integerrimaWalnut caterpillar; similar larval appearance and gregarious feeding , but associated primarily with walnut and hickory.
  • Datana ministraYellow-necked caterpillar; comparable and , distinguished by preferences and subtle wing patterns.
  • Anisota senatoriaOrangestriped oakworm; similar late-season defoliator with gregarious larvae, but belongs to Saturniidae and has distinct coloration.

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Sources and further reading