Common Swift
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Korscheltellus lupulina
Commonest Swift Moths in Britain, mainly nocturnal.
Larval foodplant is roots of grasses & small plants.
The caterpillars live underground.
The hindwings are plain brown.
The Female is larger (wingspan about 40 mm) with similar patterning to the Male but generally paler and less distinct.
Patterns on the Moths are highly variable, ranging from whitish to grey to pale brown with the Females slightly larger and less strongly marked.
Males have a hovering flight.
The species overwinters as a larva.
Flight period is May & June.