Forest Quaker

黑丸灰蝶 / Forest Quaker / リュウキュウウラボシシジミ (Pithecops corvus)

Species information

Scientific name: Pithecops corvus
Japanese name: リュウキュウウラボシシジミ
Chinese name: 黑丸灰蝶
English name: Forest Quaker, Pithecops corvus
Origin: Southeast Asia, southern China, Taiwan. In Japan, it is only found on Okinawajima and Iriomote.

Ecology and description

Forest Quaker is a small lycaenid butterfly, characterized by a black circular spot on its hindwings. The larvae feed on plants of the Desmodium genus, including Desmodium laterale. Its population is scarce on Okinawajima.

Field photographs taken during our tours, with observation dates

During our 【Forest Walk】tour, there is a chance to see this species, especially when visiting butterfly gardens, where the chances of spotting them are higher than in other locations.

Forest Quaker (Pithecops corvus) Mar 20, 2026 Visiting <em>Rubus</em> flowers Kunigami
Mar 20, 2026, Kunigami, Visiting Rubus flowers
Forest Quaker (Pithecops corvus) May 27, 2026 Female laying eggs on Desmodium Kunigami
May 27, 2026, Female laying eggs on Desmodium
Forest Quaker (Pithecops corvus) May 27, 2026 Resting on ferns Kunigami
May 27, 2026, Kunigami, Resting on ferns