Sazanami-suzume (Dolbina tancrei) – Wildlife of Japan

Introduction

Sazanami-suzume is a hawkmoth species native to Japan. It is characterized by a subdued wing pattern that closely resembles tree bark, allowing the moth to remain inconspicuous while resting.
The species is scientifically classified as Dolbina tancrei.

Appearance

Dolbina tancrei has a compact body and relatively narrow forewings, consistent with the general form of hawkmoths.
The forewings are gray to brown and marked with soft, wave-like patterns, creating an overall bark-like appearance.

Precise size measurements are not stated here, as values vary among references.

Habitat & Distribution

In Japan, Dolbina tancrei is distributed across the main islands, including Honshu, Shikoku, and Kyushu.
It inhabits wooded environments where its larval host plants are present.

Behavior

Adults are nocturnal.
They are active at night and typically rest motionless during the daytime on tree trunks or similar surfaces, where their wing pattern provides effective camouflage.

Diet

Larvae feed on plants in the olive family (Oleaceae).
In Japan, recorded host plants include species of Ligustrum and Osmanthus.

Reproduction

Adults are observed during the warmer seasons of the year.
The species overwinters in the pupal stage.

Conservation

Dolbina tancrei is a native species in Japan and is not generally regarded as threatened at the national level.

Author’s Impression

This species stands out through restraint rather than boldness. Its wave-like wing pattern blends quietly into bark, making it easy to overlook. Encountering one at rest often feels like discovering a hidden texture rather than noticing an insect.