The family consists of about 660 species worldwide. They are divided into three subfamilies, which share the same type of hearing organ. Many species in the family have a distinctively hook-shaped apex to the fore wing, giving them their common name of hook-tips.
The larvae of many species are very distinctive, tapering to a point at the tail and usually resting with head and tail raised. They feed on the leaves of trees and shrubs, pupating between leaves spun together with silk.
Source: Wikipedia

(Singapore)

(Sabah, Malaysia)
Subfamily Drepaninae

(Sabah, Malaysia)

(Pahang, Malaysia)

(Sabah, Malaysia)

(Sabah, Malaysia)

(Pahang, Malaysia)

(Johore, Malaysia)
Tribe Drepanini

(Pahang, Malaysia)

(Sabah, Malaysia)

(Sabah, Malaysia)

(Sabah, Malaysia)

(Sabah, Malaysia)

(Pahang, Malaysia)

(Sabah, Malaysia)

(Singapore)

(Sabah, Malaysia)

(Sabah, Malaysia)

(Sabah, Malaysia)

(Sabah, Malaysia)

(Sabah, Malaysia)

(Pahang, Malaysia)

(Sabah, Malaysia)

(Sabah, Malaysia)

(Sabah, Malaysia)

(Sabah, Malaysia)
Subfamily Oretinae
Tribe Oretini

(Pahang, Malaysia)

(Pahang, Malaysia)

(Sabah, Malaysia)

(Sabah, Malaysia)

(Sabah, Malaysia)

(Sabah, Malaysia)

(Sabah, Malaysia)

(Sabah, Malaysia)
Subfamily Thyatirinae
Tribe Macrothyatirini

(Sumaco, Ecuador)
Unidentified Drepanidae

(Sumaco, Ecuador)

(Sumaco, Ecuador)

(Tandayapa, Ecuador)

(Khao Yai, Thailand)