Contents: Foreword. Preface. Introduction. IUCN red list categories and criteria. Morphology and terminology. I. Family : Papilionidae. Subfamily: Parnassinae: 1. Parnassius acco gemmifer Fruhstorfer, 1904. 2. Parnassius delphius (Eversmann, 1843). 3. Parnassius hannyngtoni Avinoff, 1916. 4. Parnassius imperator augustus Fruhstorfer, 1903. 5. Parnassius stoliczkanus Felder, 1865. Subfamily: Papilioninae: 6. Atrophaneura coon sambilanga (Doherty, 1886). 7. Atrophaneura crassipes (Oberthuer, 1893). 8. Pachliopta hector (Linnaeus, 1758). 9. Atrophaneura nevilli (Wood-Mason, 1882). 10. Atrophaneura plutionius pembertoni (Moore, 1902). 11. Atrophaneura polla (de Niceville, 1897). 12. Chilasa clytia clytia f. commixtus Rothschild, 1895. 13. Papilio elephenor Doubleday, 1845. 14. Papilio liomedon Moore, 1874. II. Family : Pieridae. Subfamily: Pierinae: 15. Baltia butleri sikkima Fruhstorfer, 1903. 16. Delias sanaca (Moore, 1857). 17. Pieris krueperi devta (de Niceville, 1883). Subfamily: Coliadinae: 18. Colias cocandica thrasibulus Frushtorfer, 1909. 19. Colias dubia Elwes, 1906. III. Family: Nymphalidae. Subfamily: Danainae: 20. Euploea crameri nicevillei (Moore, 1890). 21. Euploea midamus roepstorffi (Moore, 1883). 22. Tirumala gautama gautamoides (Doherty, 1886). Subfamily: Satyrinae: 23. Callerebia annada annada (Moore, 1857). 24. Coelites nothis adamsoni Moore, 1891. 25. Cyllogenes janetae de Niceville, 1887. 26. Elymnias peali Wood-Mason, 1883. 27. Elymnias penanga chelensis de Niceville, 1890. 28. Erebia narasingha narasingha (Moore, 1857). 29. Lethe distans Butler, 1870. 30. Lethe dura gammiei (Moore, 1892). 31. Lethe europa tamuna de Niceville, 1887. 32. Lethe gemina gafuri (Tytler, 1914). 33. Lethe gulnihal gulnihal de Niceville, 1887. 34. Lethe margaritae Elwes, 1882. 35. Lethe ocellata lyncus de Niceville, 1897. 36. Lethe ramadeva (de Niceville, 1888). 37. Lethe satyavati de Niceville, 1880). 38. Mycalesis orseis nautilus Butler, 1867. 39. Pararge menava maeroides (C & R. Felder, 1867). 40. Ypthima dohertyi persimilis Elwes and Edwards, 1893. Subfamily: I. Morphinae: 41. Discophora deo deo de Niceville, 1898. 42. Discophora sondaica muscina Stichel, 1902. II. Calinaginae: 43. Calinaga buddha Moore, 1857. Subfamily: Nymphalinae: 44. Argynnis hegemone Staudinger, 1881. 45. Athyma jina jina Moore, 1857. 46. Athyma reta moorei (Fruhstorfer, 1906). 47. Bhagadatta austenia purpurascens (Tytler, 1915). 48. Bassarona iva (Moore, 1857). 49. Bassarona khama curvifascia (Tytler, 1915). 50. Chitoria ulupi ulupi (Doherty, 1889). 51. Cirrochroa fasciata (Felder, 1860). 52. Diagora nicevillei (Moore, 1895). 53. Dilipa morgiana (Westwood, 1850). 54. Doleschallia bisaltide andamanensis Fruhstorfer, 1899. 55. Eulaceura manipurensis (Tytler, 1915). 56. Bassarona durga splendens (Tytler, 1915). 57. Euthalia telchinia (Menetries, 1857). 58. Helcyra hemina Hewitson 1864. 59. Hypolimnas misippus (Linnaeus, 1764). 60. Lasippa ebusa ebusa (Felder, 1863). 61. Lasippa viraja nar (de Niceville, 1891). 62. Neptis armandia (Oberthuer, 1876). 63. Neptis cydippe kirbariensis Tytler, 1915. 64. Neptis manasa manasa Moore, 1857. 65. Neptis nycteus De Niceville, 1890. 66. Nymphalis antiopa yedanula (Fruhstorfer, 1909). 67. Pantoporia beiti paona (Tytler, 1915). 68. Phaedyma aspasia (Leech, 1890). 69. Phaedyma columella binghami (Fruhstorfer, 1905). 70. Sasakia funebris  Leech, 1891. 71. Sephisa chandra (Moore, 1858). 72. Sumalia zulema (Doubleday & Hewitson, 1850). 73. Symbrenthia silana de Niceville, 1885. Subfamily: Charaxinae: 74. Charaxes durnofordi nicholii (Grose-Smith, 1886). 75. Polyura moori sandakanus (Fruhstorfer, 1898). 76. Polyura Schreiber (Godart, 1823). 77. Prothoe Franck regalis Butler, 1885. IV. Family: Lycaenidae. Subfamily: I. Poritiinae: 78. Simiskina phalena harterti (Doherty, 1889). II. Miletinae: 79. Allotinus drumila drumila (Moore, 1865). 80. Allotinus panormis panormis ELWES, 1892. 81. Logania marmorata watsoniana de Niceville, 1898. 82. Miletus nymphis porus Eliot, 1961. 83. Miletus symethus petronius Distant & Pryer, 1887. III. Lycaeninae: 84. Acytolepis puspa prominens (de Niceville, 1890). 85. Agriades jaloka leela (de Niceville, 1884). 86. Amblopala avidiena (Hewitson, 1877). 87. Callophrys leechii (de Niceville, 1893). 88. Castalius rosimon alarbus, Fruhstorfer, 1922. 89. Charana cepheis (de Niceville, 1894). 90. Chliaria othona (Hewitson, 1865). 91. Chrysozephyrus ataxus zulla (Tytler, 1915). 92. Chrysozephyrus disparatus pseudoletha (Howarth, 1957). 93. Chrysozephyrus paona (Tytler, 1915). 94. Deudorix epijarbus amatius Fruhstorfer, 1912. 95. Drupadia scaeva cyara (Hewitson, 1878). 96. Esakiozephyrus mandara mandara (Doherty, 1886). 97. Euaspa pavo (de Niceville, 1887). 98. Heliophorus hybrida (Tytler, 1912). 99. Horaga albimacula (Wood-Mason and de Niceville, 1881). 100. Jamides ferrari ferrari Evans, 1932. 101. Liphyra brassolis brassolis Westwood, 1864. 102. Narathura ace arata (Tytler, 1914). 103. Narathura selta constanceae (de Niceville, 1894). 104. Narathura arvina ardea (Evans, 1932). 105. Narathura asinarus tounguva (Grose-Smith, 1887). 106. Narathura comica (de Niceville, 1900). 107. Narathura opalina opalina (Moore, 1883). 108. Narathura zeta (Moore, 1877). 109. Notarthrinus binghami Chapman, 1908. 110. Oreolyce dohertyi dohertyi (Tytler, 1915). 111. Pamela dudgeoni (de Niceville, 1894). 112. Panchala ariel (Doherty, 1891). 113. Pratapa icetas mishmia Evans, 1925. 114. Prosotas noreia hampsonii (de Niceville, 1885). 115. Shijimia moorei (Leech, 1889). 116. Sinthusa virgo (Elwes, 1887). 117. Spindasis elwesi Evans, 1925. 118. Spindasis rukmini (de Niceville, 1888). 119. Satyrium mackwoodi (Evans, 1914). 120. Tajuria ister (Hewitson, 1865). 121. Tajuria luculentus nela Swinhoe, 1896. 122. Tajuria yajna yajna (Doherty, 1886). 123. Virachola smilis (Hewitson, 1863). Appendices: 1. Names of species and subspecies of butterflies included in schedule-I (part IV) of the Indian Wildlife (Protection) Act, and those followed in this Red Data Book). 2. Species/subspecies excluded from the Butterfly Red Data Book. 3. Threat types used in the IUCN list of threatened species. 4. A code for insect collecting.