Ryukyu Golden Emperor Moth

琉球黃豹天蠶蛾 / Ryukyu Golden Emperor Moth / ハグルマヤママユ (Loepa sakaei)

Species information

Scientific name: Loepa sakaei
Japanese name: ハグルマヤママユ
Chinese name: 琉球黃豹天蠶蛾
English name: Ryukyu Golden Emperor Moth
Origin: Okinawajima, Tokunoshima, Amami Oshima

Ecology and description

This species is a very beautiful large moth with a wingspan of about 8 cm. It can be seen from March to October, but it is rare and not often encountered. The larvae feed on Actinidia rufa (Actinidia rufa).

Field photographs taken during our tours, with observation dates

This species has been observed during our 【Herping】 tour, but sightings are limited to only once or twice.

Ryukyu Golden Emperor Moth (Loepa sakaei) Jun 6, 2019 resting in Kunigami
Jun 6, 2019, Kunigami, resting
Ryukyu Golden Emperor Moth (Loepa sakaei) Mar 28, 2025 male, feeding on honey in Kunigami
Mar 28, 2025, Kunigami, male
Ryukyu Golden Emperor Moth (Loepa sakaei) Close-up of the head of the same specimen, showing the male's bipectinate antennae (photographed by Somewe Chou)
Close-up of the head of the same specimen, showing the male’s bipectinate antennae (photographed by Somewe Chou)
Ryukyu Golden Emperor Moth (Loepa sakaei) The same specimen resting on a child's finger
The same specimen resting on a child’s finger