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Dark Arches

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A common moth species in June to August attracted to light.


Photograph by: 
Peter Orchard

Apamea monoglypha: the dark arches moth

Post date: Friday, 1 July, 2016 - 20:57

This is a moth that seems to be particularly captivated by light and finds its way frequently in to the moth trap.

The dark arches (Apamea monoglypha) is generally single brooded flying from June through until August and it is quite common throughout the British Isles. In the south, however, and especially in Dorset it can have a second brood in September to October if the weather is right so it is a species that keeps cropping up for most of the autumn.

Like many moths it is a lover of red valerian and buddleia and as our garden is blessed with both of these the dark arches is going to be a regular visitor.

The larvae feed on the roots and stems of grasses, notably the very common cock's-foot and it overwinters as a larvae, pupating in the spring before emerging in June.


The records for this species have been organised into reports, charts, maps and photos. Click a pic below to see the detail:

Sites List Distribution Map Some Charts Some Photographs Original Tweets Relatives Guidance Notes
Common Name Dark Arches
Scientific Name Apamea monoglypha
Interest Level
Species Family Moths 516-899: Noctuids
Preferred Environment
Look for
Additional Identification Notes
Similar Species