The Straight-line Map-wing (Cyrestis nivea) is a butterfly

Butterfly

A butterfly is a mainly day-flying insect of the order Lepidoptera, which includes the butterflies and moths. Like other holometabolous insects, the butterfly's life cycle consists of four parts: egg, larva, pupa and adult. Most species are diurnal. Butterflies have large, often brightly coloured...

 of the Nymphalidae

Nymphalidae

The Nymphalidae is a family of about 5,000 species of butterflies which are distributed throughout most of the world. These are usually medium sized to large butterflies. Most species have a reduced pair of forelegs and many hold their colourful wings flat when resting. They are also called...

 family. It is found in south-east Asia

Asia

Asia is the world's largest and most populous continent, located primarily in the eastern and northern hemispheres. It covers 8.7% of the Earth's total surface area and with approximately 3.879 billion people, it hosts 60% of the world's current human population...

. The habitat consists of primary and secondary forest at elevations between sea level and about 500 metres.

Males and females are similar, but females are somewhat paler and have slightly more rounded wings.

The larvae are green and covered with tiny pale tubercules. There is a long curved dark purplish spiky horn on the fifth and eleventh segments.

Subspecies

• Cyrestis nivea nivea (Java)
• Cyrestis nivea nivalis C. & R. Felder, [1867] (southern Thailand, Peninsular Malaya, Pulau Tioma, Sumatra, Borneo)
• Cyrestis nivea pigmentosa Okubo, 1983
• Cyrestis nivea superbus Staudinger (Palawan)
• Cyrestis nivea fadorensis Kheil (Nias)
• Cyrestis nivea tonkiniana Fruhstorfer, 1901 (northern Indo-China)
• Cyrestis nivea baliensis Martin (Bali)
• Cyrestis nivea fruhstorferi Röber (Kangean Island)
• Cyrestis nivea sumbawana Martin (Sumbawa)