The Rounded Six-line Blue Nacaduba berenice is a species of lycaenid

Lycaenidae

The Lycaenidae are the second-largest family of butterflies, with about 6000 species worldwide, whose members are also called gossamer-winged butterflies...

 butterfly found in Southeast Asia

Southeast Asia

Southeast Asia, South-East Asia, South East Asia or Southeastern Asia is a subregion of Asia, consisting of the countries that are geographically south of China, east of India, west of New Guinea and north of Australia. The region lies on the intersection of geological plates, with heavy seismic...

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Race plumbeomicans

Male upperside: dull purplish-blue, in certain lights with a shining plumbeous frosting. Fore and hind wings: black anticiliary lines and on the hind wing the black subterminal spot in interspace 2 on the underside apparent by transparency. Underside: purplish grey. Fore wing: a pair of curved white lines from costa transversely across the cell to vein 1, a short similar line on the inner side of the discocellulars followed by three transverse discal similar lines from costa to vein 1, an inner and outer transverse Hubterminal series of slender white lunules and an anticiliary dark brown line. Hind wing: crossed transversely by three slender broken lines, with a short line on the inner side of the discocellulars between the outer two; These are followed by a discal and a postdiscal less broken and interrupted similar lines, a double series of slender white lunules and a dark anticiliary line as on the fore wing. Cilia of both fore and hind wings dark brown. Antenna black, the shafts obscurely speckled with white; head, thorax and abdomen brown, thorax and abdomen slightly purplish; beneath: palpi white fringed with long black stiff hairs, thorax and abdomen purplish grey.

Female upperside: fuscous brown, the veins prominent; an elongate oval medial patch extended from base outwards on fore wing for about two-thirds of its length, dull brownish-white brilliantly iridescent with metallic blue in certain lights. Hind wing: a postdiscal transverse series of slender detached white lunules, followed by a similar subterminal series of continuous lunules that encloses between it and a slender terminal white line a transverse series of black spots; these spots decrease in size anteriorly; lastly a conspicuous anticiliary black line. Underside: pale ochraceous-bnown; markings much as in the male, but of the transverse white lines that cross the disc of the fore wing the outer one is shorter, not extended below vein 3. Antennae, head, thorax and abdomen as in the male, but the head, thorax and abdomen paler with no purple gloss.

Race nicobarica, Wood-Mason & de Niceville

Male upperside: groundcolour darker, plumbeous effulgence more striking. Underside: very dark purplish-brown; markings in form and arrangement much as in the female of the typical form, but the transverse bands formed by the white lines much broader; on the hind wing the black subterminal spots in interspaces 1 and 2 much larger, conspicuously crowned inwardly and surrounded with ochraceous orange and with an outer bordering of metallic green scales ; the anticiliary black line edged inwardly over the tornal area with white. Antennae, head, thorax and abdomen as in the typical form.

Female closely resembles the typical form, but differs as follows :— Upperside: fuscous black, the ground-colour much darker than in the typical form; tbe pale medial patch on the fore wing shot in certain lights with iridescent blue, much larger, occupying the basal posterior two-thirds of the wing, and unlike the typical form the posterior two-thirds of the hind wing. Underside: precisely as in the typical form. Antennae, head, thorax and abdomen also similar to those of the typical form. (Great Nicobar and Central Group, Nicobar Islands.)

Distribution

Sri Lanka

Sri Lanka

Sri Lanka, officially the Democratic Socialist Republic of Sri Lanka is a country off the southern coast of the Indian subcontinent. Known until 1972 as Ceylon , Sri Lanka is an island surrounded by the Indian Ocean, the Gulf of Mannar and the Palk Strait, and lies in the vicinity of India and the...

. Peninsular India

India

India , officially the Republic of India , is a country in South Asia. It is the seventh-largest country by geographical area, the second-most populous country with over 1.2 billion people, and the most populous democracy in the world...

. Assam

Assam

Assam , also, rarely, Assam Valley and formerly the Assam Province , is a northeastern state of India and is one of the most culturally and geographically distinct regions of the country...

. Chittagong

Chittagong

Chittagong ) is a city in southeastern Bangladesh and the capital of an eponymous district and division. Built on the banks of the Karnaphuli River, the city is home to Bangladesh's busiest seaport and has a population of over 4.5 million, making it the second largest city in the country.A trading...

 hill-tracts. Myanmar

Myanmar

Burma , officially the Republic of the Union of Myanmar , is a country in Southeast Asia. Burma is bordered by China on the northeast, Laos on the east, Thailand on the southeast, Bangladesh on the west, India on the northwest, the Bay of Bengal to the southwest, and the Andaman Sea on the south....

. Tenasserim. Mergui

Mergui

Myeik is a city in Tanintharyi Division in Myanmar , located in the extreme south of the country on the coast of an island on the Andaman Sea. the estimated population was over 209,000. The area inland from the city is a major smuggling corridor into Thailand.-History:Myeik was the southernmost...

. The Andamans

Andaman Islands

The Andaman Islands are a group of Indian Ocean archipelagic islands in the Bay of Bengal between India to the west, and Burma , to the north and east...

 and Nicobars

Nicobar Islands

The Nicobar Islands are an archipelagic island chain in the eastern Indian Ocean...

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Peninsular Malaysia

Peninsular Malaysia

Peninsular Malaysia , also known as West Malaysia , is the part of Malaysia which lies on the Malay Peninsula. Its area is . It shares a land border with Thailand in the north. To the south is the island of Singapore. Across the Strait of Malacca to the west lies the island of Sumatra...

, Singapore

Singapore

Singapore , officially the Republic of Singapore, is a Southeast Asian city-state off the southern tip of the Malay Peninsula, north of the equator. An island country made up of 63 islands, it is separated from Malaysia by the Straits of Johor to its north and from Indonesia's Riau Islands by the...

, Langkawi

Langkawi

Langkawi, officially known as Langkawi, the Jewel of Kedah is an archipelago of 104 islands in the Andaman Sea, some 30 km off the mainland coast of northwestern Malaysia. The islands are a part of the state of Kedah, which is adjacent to the Thai border...

, Sumatra

Sumatra

Sumatra is an island in western Indonesia, westernmost of the Sunda Islands. It is the largest island entirely in Indonesia , and the sixth largest island in the world at 473,481 km2 with a population of 50,365,538...

, Java

Java

Java is an island of Indonesia. With a population of 135 million , it is the world's most populous island, and one of the most densely populated regions in the world. It is home to 60% of Indonesia's population. The Indonesian capital city, Jakarta, is in west Java...

. Thailand

Thailand

Thailand , officially the Kingdom of Thailand , formerly known as Siam , is a country located at the centre of the Indochina peninsula and Southeast Asia. It is bordered to the north by Burma and Laos, to the east by Laos and Cambodia, to the south by the Gulf of Thailand and Malaysia, and to the...

 and Laos

Laos

Laos Lao: ສາທາລະນະລັດ ປະຊາທິປະໄຕ ປະຊາຊົນລາວ Sathalanalat Paxathipatai Paxaxon Lao, officially the Lao People's Democratic Republic, is a landlocked country in Southeast Asia, bordered by Burma and China to the northwest, Vietnam to the east, Cambodia to the south and Thailand to the west...

. Nias

Nias

Nīas is an island off the western coast of Sumatra, Indonesia. Nias is also the name of the archipelago, containing the Hinako archipelago....

. Bawean

Bawean

Bawean is an island of Indonesia located approximately 150 km north of Surabaya in the Java Sea, off the coast of Java. It is administered by Gresik Regency of East Java province. It is approximately 15 km in diameter and is circumnavigated by a single narrow road. Bawean is dominated by...

. Flores

Flores

Flores is one of the Lesser Sunda Islands, an island arc with an estimated area of 14,300 km² extending east from the Java island of Indonesia. The population was 1.831.000 in the 2010 census and the largest town is Maumere. Flores is Portuguese for "flowers".Flores is located east of Sumbawa...

, Sumba

Sumba

Sumba is an island in eastern Indonesia, is one of the Lesser Sunda Islands, and is in the province of East Nusa Tenggara. Sumba has an area of 11,153 km², and the population was officially at 611,422 in 2005...

, Tanadjampea. Borneo

Borneo

Borneo is the third largest island in the world and is located north of Java Island, Indonesia, at the geographic centre of Maritime Southeast Asia....

. Philippines

Philippines

The Philippines , officially known as the Republic of the Philippines , is a country in Southeast Asia in the western Pacific Ocean. To its north across the Luzon Strait lies Taiwan. West across the South China Sea sits Vietnam...

. Sulawesi

Sulawesi

Sulawesi is one of the four larger Sunda Islands of Indonesia and is situated between Borneo and the Maluku Islands. In Indonesia, only Sumatra, Borneo, and Papua are larger in territory, and only Java and Sumatra have larger Indonesian populations.- Etymology :The Portuguese were the first to...

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Australia

Australia

Australia , officially the Commonwealth of Australia, is a country in the Southern Hemisphere comprising the mainland of the Australian continent, the island of Tasmania, and numerous smaller islands in the Indian and Pacific Oceans. It is the world's sixth-largest country by total area...

. Bismarck Archipelago

Bismarck Archipelago

The Bismarck Archipelago is a group of islands off the northeastern coast of New Guinea in the western Pacific Ocean and is part of the Islands Region of Papua New Guinea.-History:...

. Obi

Obi

Obi may refer to:* Obi , a sash worn with a kimono or with the uniforms used by practitioners of Japanese martial arts* Obi-Wan Kenobi, fictional character from the Star Wars universe...

. Ambon. Serang

Serang

Serang is a regency of Banten province, Indonesia. The administrative center of the regency and the capital of the province is the independent municipality of Serang...

. Aru

Aru

Aru and ARU may refer to:Aru* Name of Lady in India* Aru Islands, a group of islands in the Moluccas* Sultanate of Deli , an early Islamic polity in northeast Sumatra* Aru, Democratic Republic of Congo, a town in Ituri province...

. Aola. Guadalcanal

Guadalcanal

Guadalcanal is a tropical island in the South-Western Pacific. The largest island in the Solomons, it was discovered by the Spanish expedition of Alvaro de Mendaña in 1568...

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External links

• Asahi Correctly determined photos of N. berenice from the Philippines
  Philippines
  The Philippines , officially known as the Republic of the Philippines , is a country in Southeast Asia in the western Pacific Ocean. To its north across the Luzon Strait lies Taiwan. West across the South China Sea sits Vietnam...