Idaea dilutaria

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Idaea dilutaria
Silky Wave Moths of the British Isles.jpg
Scientific classification Red Pencil Icon.png
Kingdom: Animalia
Phylum: Arthropoda
Class: Insecta
Order: Lepidoptera
Family: Geometridae
Genus: Idaea
Species:
I. dilutaria
Binomial name
Idaea dilutaria
(Hübner, 1799)

Idaea dilutaria, also called the silky wave, is a moth of the family Geometridae. It is found in Europe.

Contents

Fig 1,1a Larvae in various stages 1b enlarged details of segments Buckler W The larvae of the British butterflies and moths PlateCXVIII.jpg
Fig 1,1a Larvae in various stages 1b enlarged details of segments

The species has a wingspan of 20–22 mm.Recognizable by its strongly silky gloss, the absence of costal colouration (the costal margin has merely a sparse dusting of dark scales), the unmarked distal margin and fringe.The ground-colour is yellowish-tinted the discal dots are minute and there are no terminal lines.The other lines are generally all of approximately equal expression, sometimes the postmedian a little stronger, sometimes the median of the forewing weak.The underside is similar, the postmedian line often a little stronger, theantemedian and sometimes the median of the forewing obsolete. The males antennal ciliation is short and even. [1]

The adults fly in one generation in July .

The larvae feed on Helianthemum nummularium .

Notes

  1. ^ The flight season refers to the British Isles. This may vary in other parts of the range.

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References

  1. Prout, L. B. (1912–16). Geometridae. In A. Seitz (ed.) The Macrolepidoptera of the World. The Palaearctic Geometridae, 4. 479 pp. Alfred Kernen, Stuttgart.pdf PD-icon.svg This article incorporates text from this source, which is in the public domain .