Brimstone Butterfly

Gonepteryx rhamni

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This brimstone butterfly print began with a problem of disguise. The brimstone is built like a leaf. Each wing comes to a small point and carries a raised central vein. A resting brimstone, wings closed, reads as a single leaf among others. I drew it closed first, to show the trick, before I drew anything else.

TL;DRGonepteryx rhamni is one of the longest-lived European butterflies. It overwinters as an adult and flies on the first warm days of spring, often before any other butterfly is on the wing.

Key Facts

A wing shaped like a leaf

The brimstone whole defence is camouflage. The wings are not rounded like most butterflies. They come to a point at top and bottom, and a strong vein runs down the centre of each. Closed, the butterfly looks like a leaf, vein and all. It even tilts to match the angle of nearby foliage. It hibernates in ivy, holly, or bramble, where the disguise holds all winter. I drew the closed wing carefully, because the leaf shape is the most important fact about the insect. The open wing is the surprise. The closed wing is the survival.

The colour that may have named the butterfly

The male is the source of the colour the brimstone is known for. It is a deep sulphur yellow, soft and waxy, not a bright primary. The female is far paler, a green-tinged white often mistaken for a cabbage white in flight. There is a long-held idea that the word butterfly comes from this butter-coloured male, the first conspicuous yellow flier of spring. Whether the etymology holds or not, the brimstone earns the link. In March it is often the only butterfly in the air. I kept the male yellow honest, neither flattened nor brightened.

A long life for a butterfly

Most butterflies live a few weeks. The brimstone can live close to a year. It emerges in summer, feeds, then hibernates as an adult through the cold. It wakes on the first warm spring days, mates, and only then dies. That long arc is unusual among European butterflies. It is why you see brimstones so early, while the woods are still bare. The adult that crosses your path in March may have hatched the previous July.

Buckthorn and the spread of the brimstone

The species name rhamni points to the caterpillar food: buckthorn, genus Rhamnus, and its relative Frangula. The female lays on buckthorn alone. Where the shrub grows, the butterfly follows. Where it is absent, the brimstone is too. This tight link between insect and plant is the kind of relationship botanical illustration has always recorded, from Maria Sibylla Merian, who paired insects with their foodplants, onward. The drawing keeps the butterfly as the subject, but the plant is never far away.

Where and when you see it

The brimstone is a butterfly of woodland edges, hedgerows, and gardens. It ranges across Europe, North Africa, and into Asia, wherever buckthorn grows. You see it earliest of all the butterflies, sometimes in late February on a warm day. It flies again in high summer, when the new generation emerges. The two appearances can fool you into thinking there are more brimstones than there are. There is really one long-lived adult, bridging the year. Catching sight of one in early spring is a reliable sign the season has turned.

Drawing the brimstone butterfly print

The brimstone butterfly print came down to the veins. They are what makes the leaf disguise work, so they had to be exact. I drew the central vein strong and the side veins fading toward the wing edge, the way a real leaf is built. The colour sits in thin layers, because the brimstone yellow is a surface sheen, not a flat fill. I left the wing edge slightly irregular, the way an overwintered butterfly looks by spring. A specimen that has survived a winter is never pristine, and a drawing in the natural-history tradition should not pretend otherwise.

Frequently Asked Questions

Why does the brimstone butterfly look like a leaf?

Its pointed, veined wings mimic a leaf when closed, which hides the butterfly while it hibernates in ivy or holly.

How long does a brimstone butterfly live?

Close to a year. It overwinters as an adult and flies again the next spring, far longer than most butterflies.

What size does this brimstone butterfly print come in?

It is a digital download. Print it at A4, A3, or a standard frame size, at home or any print shop.

How is this botanical art printed and how is it shipped?

The digital file comes from Etsy and you print it yourself. A ready-made archival fine-art print, produced and shipped to you, is available through Saatchi Art.

Did the brimstone give the butterfly its name?

It may have. The butter-yellow male is the first bright flier of spring, and many trace the word butterfly to it.

The Brimstone Butterfly Gift Shop

The brimstone drawing carried onto pieces for everyday use: a mug for the desk, a tote for the bag, an apron for the kitchen, a notebook for study.

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