Seq # 160420010

Whittleia retiella (Newman, 1847) Species

Last modified: Sept. 6, 2023, 1:43 p.m.

A very rare and extremely local species occurring in WV in Belgium, recorded for the first time in 2008.
Difficult to detect because of its cryptic lifestyle.


Family: Psychidae > Subfamily: Epichnopteriginae > Tribus: Epichnopterigini > Genus: Whittleia > Species: Whittleia retiella
Vernacular names
Kustzakdrager (NL), Salzwiesen-Sackträger (DE)
First mention in Belgium
Jansen M. G. M. 2008. The Lepidoptera of the salt marshes of Het Zwin including two species new for the Belgian fauna (Lepidoptera). — Phegea 36(3): 109–118. On page 114. view page




The female is apterous.

Museum specimens

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Specimens in nature


Length 5–8 mm, longitudinally covered with grass blades.

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The larva attaches its case firmly to grass and is very difficult to detect. Pupation takes place affixed to grasses.
Males tend to attach their case lower on the grass than females do. Males tend to fly very low over the vegetation in sunshine.

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Flight periods

One generation a year from mid April till June with a peak in the first decade of May.

Observed on

Host plant (species):
Puccinellia maritima
Grasses and Herbaceous plants

Oligophagous on grasses [Poaceae] like Festuca rubra and Puccinellia maritima , though in other countries the larva has been found on a variety of herbs.

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Grassy salt-marshes and meadows.

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