Red Twin-spot Carpet (*Xanthorhoe Spadicearia*) on Mallow (*Malva*) Hand-colored engraving by Jacob L'Admiral (1774)

Metamorphosis Observed in the Garden Mallow

This original 1774 hand-colored engraving by Jacob L’Admiral depicts the Red Twin-spot Carpet (Xanthorhoe spadicearia) in successive stages of transformation upon mallow (Malva). Larvae ascend the foliage, chrysalides rest near the lower register, and vividly patterned adults hover in balanced suspension above the flowering stem.

The composition unites the broad, softly veined leaves of the mallow with the delicately structured geometry of the moths’ wings. Pink blossoms introduce warmth, while the generous white ground preserves clarity and visual air.

L’Admiral presents metamorphosis not as ornament, but as process—integrating botanical structure and insect development within a disciplined Enlightenment framework.

— • —

Visual and Aesthetic Analysis

The plate achieves equilibrium through contrast. The saturated reds and blues of the adult moths create rhythmic accents across the upper field, while the dense green leaves anchor the composition below. The engraved line remains crisp and controlled, allowing the hand-coloring to articulate leaf texture and wing pattern with remarkable precision.

The spatial openness surrounding the plant enhances its sculptural presence, making the sheet visually refined while maintaining scientific clarity.

Scientific Context

Xanthorhoe spadicearia, commonly known as the Red Twin-spot Carpet, is a European geometrid moth associated with herbaceous plants including species of Malva. Eighteenth-century entomologists increasingly emphasized the importance of documenting life cycles in relation to host plants.

By presenting larval, pupal, and adult stages within the same botanical framework, L’Admiral demonstrates the ecological awareness characteristic of Dutch Enlightenment natural science—observing transformation as a continuous biological phenomenon.

Condition Report

Printed on original eighteenth-century laid paper with visible chain lines. A watermark with a clearly defined paper mill logo is present within the sheet, confirming period paper production. The margins remain fresh and clean, and the impression is sharp and well preserved. The hand-coloring retains strong saturation and clarity. An exceptional example dated 1774.

Details

• Artist: Jacob L’Admiral
• Work: Metamorphosis studies of insects (1774)
• Subject: Red Twin-spot Carpet (Xanthorhoe spadicearia) on Mallow (Malva)
• Period: 1774
• Technique: Original hand-colored engraving
• Paper: Original laid paper
• Watermark: Present (paper mill logo)
• Sheet size: approx. 43 × 26 cm