
Sri Lanka is a tropical island situated close to the southern tip of India. The invertebrate fauna is as large as it is common to other regions of the world. There are about 2 million species of arthropods found in the world, and still it is counting. So many new species are discover up to this time also. So it is very complicated and difficult to summarize the exact number of species found within a certain region.
Acrapex roseotincta is a species of moth of the family Noctuidae first described by George Hampson in 1910. It is found in Sri Lanka.
Actinotia intermediata is a species of moth of the family Noctuidae. It is found in Asia, including India, Sri Lanka and Taiwan.

Aegocera venulia is a moth in the family Noctuidae first described by Pieter Cramer in 1777. It is found in India and Sri Lanka.
Agassiziella alicialis is a moth of the family Crambidae. It is found in Sri Lanka.
Alucita ischalea is a moth of the family Alucitidae. It is found in Sri Lanka.
Alucita mesolychna is a moth of the family Alucitidae. It is found in Sri Lanka and India (Assam).
Alucita niphostrota is a moth of the family Alucitidae. It is found in Sri Lanka.
Alucita pinalea is a moth of the family Alucitidae. It is found in Sri Lanka.
Alucita sycophanta is a moth of the family Alucitidae. It is found in Sri Lanka.
Alucita thapsina is a moth of the family Alucitidae. It is found in Sri Lanka.
Alucita toxophila is a moth of the family Alucitidae. It is found in Sri Lanka.
Alucita trachyptera is a moth of the family Alucitidae. It is found in southern India and Sri Lanka.

Amata cyssea, the handmaiden moth, is a moth of the subfamily Arctiinae. It was described by Caspar Stoll in 1782. It is found on the Indian subcontinent and Sri Lanka.

Amata passalis, the sandalwood defoliator, is a moth of the family Erebidae first described by Johan Christian Fabricius in 1781. It is found in Sri Lanka and India. It is known mainly as a defoliator of sandalwood in India. It is also recorded on various alternate food plants.

Ambulyx auripennis is a species of moth in the family Sphingidae. It was described by Moore, in 1879, and is known from Sri Lanka.

Ambulyx lestradei is a species of moth of the family Sphingidae. It is known from Sri Lanka.

Anarsia ephippias is a moth of the family Gelechiidae. It was described by Edward Meyrick in 1908. It is found in India and Sri Lanka.
Ancylosis argentescens is a moth of the family Pyralidae. It was described by George Hampson in 1912 and is found in Sri Lanka.

Antheraea paphia, the South India small tussore, is a species of moth of the family Saturniidae found in India and Sri Lanka.
Aphomia monochroa is a species of snout moth in the genus Aphomia. It was described by George Hampson in 1912 and is known from Sri Lanka and India.
Aphomia vinotincta is a species of snout moth in the genus Aphomia. It was described by George Hampson in 1908 and is known from Sri Lanka and India.
Ariola ransonneti is a moth of the family Nolidae first described by Felder and Rogenhofer in 1874. It is only known from Sri Lanka.
Axinoptera plicata is a moth in the family Geometridae. It is found in Sri Lanka.

Cirrhochrista pulchellalis is a moth in the family Crambidae. It was described by Julius Lederer in 1863. It is found on Ambon Island, Java and Sri Lanka.

Collix ghosha is a moth in the family Geometridae. It was described by Francis Walker in 1862. It is found in the Indo-Australian tropics, from the Indian subregion, Sri Lanka to Queensland, Japan and New Caledonia.
Collix rufipalpis is a South Asian moth in the family Geometridae. It was first described by George Hampson in 1907. It is found in India and Sri Lanka. It is synonymous with Philbalapteryx rufipalpis.

Corgatha atrifalcis is a moth in the family Erebidae. It is found in Sri Lanka.
Cyphosticha acrolitha is a moth of the family Gracillariidae. It is known from Sri Lanka.

Ecliptopera muscicolor is a moth of the family Geometridae. It was described by Frederic Moore in 1888. It is found in India, Sri Lanka and Taiwan.

Eoophyla gibbosalis is a moth in the family Crambidae. It was described by Achille Guenée in 1854. It is found on Sulawesi and Java and in Sri Lanka.

Ericeia inangulata, the sober tabby, is a moth in the family Erebidae. The species was first described by Achille Guenée in 1852. It is found in the Indo-Australian tropics of China, India, Sri Lanka, Myanmar, and the Marianas and Carolines, Fiji, Vanuatu, New Caledonia and Samoa.

Eublemma cochylioides, the pink-barred eublemma, is a species of moth of the family Erebidae described by Achille Guenée in 1852.
Evergestis scopicalis is a moth in the family Crambidae. It was described by George Hampson in 1908. It is found in Sri Lanka.

Fascellina chromataria is a moth in the family Geometridae described by Francis Walker in 1860. It is found in Korea, Japan, Taiwan, China, India, Bhutan and Sri Lanka.
Filodes bilinealis is a moth of the family Crambidae described by George Hampson in 1908. It is found in Sri Lanka.

Hypena labatalis is a species of moth of the family Erebidae first described by Francis Walker in 1859. It is found in Australia, India and Sri Lanka.

Hypena lignealis is a moth in the family Noctuidae described by Francis Walker in 1866. It is found in Sri Lanka, Taiwan and Japan.
Macarostola thriambica is a moth of the family Gracillariidae. It is known from Sri Lanka.

Macroglossum assimilis is a moth of the family Sphingidae. It was described by William John Swainson in 1821 and is known from India and Sri Lanka.

Macroglossum belis, the common hummingbird hawkmoth, is a moth of the family Sphingidae. It was described by Carl Linnaeus in his 1758 10th edition of Systema Naturae. It is known from Sri Lanka, India, Nepal, Thailand, southern China, Taiwan, Japan, Vietnam and Indonesia (Java).

Macroglossum corythus is a species of hawk moth of the family Sphingidae. It was described by Francis Walker in 1856 and is found throughout the Indo-Australian tropics east to New Caledonia.

Macroglossum heliophila, the broad-bordered hummingbird hawkmoth, is a moth of the family Sphingidae. It was described by Jean Baptiste Boisduval in 1875. It is found from north-eastern Sikkim, India across southern China to Cheju Island, southern Japan, Taiwan and the Philippines and then south through Vietnam, Thailand, Malaysia and Indonesia to New Guinea and neighbouring islands. It is also known from Queensland, but doubt in Sri Lanka.

Macroglossum mitchellii, the grey-striped hummingbird hawkmoth, is a moth of the family Sphingidae described by Jean Baptiste Boisduval in 1875. It is known from Sri Lanka, southern and eastern India, Thailand, southern China, Taiwan, Vietnam, Malaysia and Indonesia.

Macroglossum sitiene, the crisp-banded hummingbird hawkmoth, is a moth of the family Sphingidae described by Francis Walker in 1856.
Nemophora engraptes is a moth of the family Adelidae or fairy longhorn moths. It was described by Edward Meyrick in 1907. It is found in Sri Lanka.

Orgyia postica, the cocoa tussock moth or hevea tussock moth, is a species of moth of the subfamily Lymantriinae of family Erebidae found from the Oriental tropics of India, Sri Lanka, Myanmar, Borneo, Java, New Guinea and Taiwan. It was described by Francis Walker in 1855.

Patanotis is a genus of moths in the family Momphidae. The species of this genus are found in Sri Lanka.

Phalaritica is a genus of moths in the family Momphidae. There is only one species in this genus: Phalaritica vindex Meyrick, 1913 that is found in Sri Lanka.
Phrixosceles campsigrapha is a moth of the family Gracillariidae. It is known from Sri Lanka

Pindara illibata is a moth of the family Noctuidae first described by Johan Christian Fabricius in 1775. It is found in the Oriental region, including Taiwan, China, India, Sri Lanka, Myanmar, Japan and Borneo.

Polydesma umbricola, the monkeypod moth or large tabby, is a species of moth in the family Erebidae. The species is found in southern Europe, Africa, Asia Minor to southern Asia, of India, Sri Lanka, Maldives, the Andaman Islands, including many Indian Ocean islands, like Coëtivy Island, Aldabra, Assumption Island, Madagascar and on Hawaii.

Pycnarmon virgatalis is a moth in the family Crambidae. It was described by Moore in 1867. It is found in India and Sri Lanka.

Scopula fibulata is a moth of the family Geometridae first described by Achille Guenée in 1858. It is found in Kenya, Sri Lanka and China.
Spilosoma eldorado is a moth of the family Erebidae. It was described by Walter Rothschild in 1910. It is found in eastern India and Sri Lanka.
Stathmopoda aconias is a species of moth of the family Stathmopodidae. It is found in India and Sri Lanka.

Tetridia is a monotypic moth genus of the family Crambidae described by William Warren in 1890. Its single species, Tetridia caletoralis, was described by Francis Walker in 1859. It is found in China, northern India, Sri Lanka, Myanmar, Malaysia, Papua New Guinea, Japan, Taiwan and Australia, where it has been recorded from Queensland.

Utetheisa lotrix, the salt-and-pepper moth or crotalaria moth, is a moth of the family Erebidae. The species was first described by Pieter Cramer in 1777. It is found in most of the Old World tropics.

The yellow-tail, goldtail moth or swan moth is a moth of the family Erebidae. The species was first described by Johann Kaspar Füssli in 1775. It is distributed throughout Europe to the Urals, then east across the Palearctic to Siberia. It is also found in Sri Lanka.