''Euphalacra semisecta'' is a

moth Moths are a group of insects that includes all members of the order Lepidoptera that are not Butterfly, butterflies. They were previously classified as suborder Heterocera, but the group is Paraphyly, paraphyletic with respect to butterflies (s ...

in the family

Drepanidae The Drepanidae are a family of moths with about 660 species described worldwide. They are generally divided in three subfamilies, which share the same type of hearing organ. Thyatirinae, previously often placed in their own family, bear a supe ...

. The first known description is by William Warren in 1922, although Warren attributed the species to Hampson. It is found on

Borneo Borneo () is the List of islands by area, third-largest island in the world, with an area of , and population of 23,053,723 (2020 national censuses). Situated at the geographic centre of Maritime Southeast Asia, it is one of the Greater Sunda ...

Sumatra Sumatra () is one of the Sunda Islands of western Indonesia. It is the largest island that is fully within Indonesian territory, as well as the list of islands by area, sixth-largest island in the world at 482,286.55 km2 (182,812 mi. ...

and

Peninsular Malaysia Peninsular Malaysia, historically known as Malaya and also known as West Malaysia or the Malaysian Peninsula, is the western part of Malaysia that comprises the southern part of the Malay Peninsula on Mainland Southeast Asia and the list of isla ...

, with a type locality on Sumatra.

Food sources

The larvae feed on '' Plectocomiopsis geminiflorus''. A survey in 2013 found that adults are attracted to bait traps with fermenting banana, and were the only species of

recorded in the survey to prefer them over bait traps with rotting prawn.

Appearance

''Euphalacra semisecta'' has pale forewings marked with interrupted brown bands and rounded anterior corners.

References

Moths described in 1922 Drepaninae {{Drepaninae-stub