Seq # 602950010

Thera britannica (Turner, 1925) Species

Last modified: Feb. 18, 2020, 7:41 p.m.

A common and widespread species throughout Belgium.
Distribution on the basis of controlled males (saw teeth of the antenna members) or study of the genitalia in females.


Family: Geometridae > Subfamily: Larentiinae > Tribus: Cidariini > Genus: Thera > Species: Thera britannica
Vernacular names
Schijn-sparspanner (NL), Spruce Carpet (EN), La Corythée anglaise (FR), Sägezahnfühler-Nadelholzspanner (DE)
Thera albonigrata Gornik, 1942, nec Höfer, 1920
First mention in Belgium
Sarlet L. 1980. Thera albonigrata Gornik, 1942 est-il belge? — Lambillionea 79: 53–55. On page 53.




Museum specimens

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Specimens in nature

Flight periods

The adults fly in two generations a year from mid April till the end of June and from September till well in October. They come to light.

Observed on

Host plant (species):
Picea abies and Pseudotsuga menziesii
Host plant (genera):

The larva lives on Picea spp. and Pseudotsuga menziesii. Hibernates as young larva between needles of the food plant or among plant debris.

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