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Brimstone Moth

Opisthograptis luteolata

Not yet photographed by the community

Bright yellow geometer; common in gardens and hedgerows.

Species Profile

Not assessed for specific conservation listing; appears to be common and stable across the UK.

Lifespan: approximately 4–6 weeks as an adult moth
Size & Weight: wingspan 28–35 mm
Habitat: woodland edges, hedgerows, gardens, and areas with hawthorn and other Rosaceae host plants.
UK Distribution: Found throughout England, Wales, and southern Scotland; resident year-round with populations supplemented by Continental migrants in autumn.
Diet: Caterpillars feed on hawthorn, blackthorn, apple, and other plants in the Rosaceae family; adults feed on nectar and other plant sugars.
Predators: Ground beetles, spiders, and insectivorous birds such as robins and wrens.
Mating Season: Two main broods: April to June and August to October, with partial third broods possible.
Breeding: Females lay eggs singly or in small groups on host plants; caterpillars reach maturity within 4–6 weeks; chrysalises overwinter.
Behaviour: The Brimstone Moth is a nocturnal species attracted to artificial lights. Adults rest by day with wings folded tent-like over the body. The distinctive pale yellow colouration provides excellent camouflage among lichen and dead leaves.

Did You Know?

•Its common name 'Brimstone' refers to its sulphur-yellow wing colour, reminiscent of the chemical element.
•The caterpillar is bright green with a humped posture, resembling a bird dropping for protection.
•It is one of the earliest spring moths in the UK, sometimes appearing in March.
•The species shows significant colour variation, ranging from pale cream to rich golden yellow.
•It is increasingly common in UK gardens, particularly where hawthorn and fruit trees are grown.

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