| 1661 ~ Orange Underwing ~ Archiearis parthenias | ||
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UK Status Resident. Local. Montgomeryshire Status Records from 1998 (Lake Vyrnwy) and 2012 (Llanymynech Rocks). This day flying species is probably under recorded, flying as it does, around the tops of birch trees in March/April. Wingspan : M & F, 35-39mm. Confusion species Light Orange Underwing. |
Flight
time (Montgomeryshire)  Habitat Open woodland, scrub and other open ground. Foodplant Downy birch and silver birch. Lifestage data Eggs are laid on twigs in time for the larvae to feed on the opening catkins, then feeding on younger leaves when larger, hiding between spun leaves during the day. Larva April-June. Overwinters as a pupa. |
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| Montgomeryshire photos | ||
 Photo by AH, 24th Mar 2012, Llanymynech Rocks |
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