Sri Lanka is a tropical island country situated near to the southern tip of the Indian subcontinent. Sri Lanka is home to at least 229 species of ants which span 66 genera and 12 subfamilies. There are 102 endemic species in Sri Lanka, comprising 48.6% of ant species on the island. The following list is according to the Ants of Sri Lanka by Prof. R.K. Sriyani Dias 2014 comprehensive edition by Biodiversity Secretariat on Ministry of Environmental and Renewable Energy of Sri Lanka.
Ants Subfamily: Amblyoponinae Stigmatomma testaceum
Subfamily: Aneuretinae Aneuretus simoni - Sri Lanka Relict Ant (endemic)
Subfamily: Dolichoderinae Dolichoderus taprobanae Tapinoma indicum Tapinoma melanocephalum Technomyrmex albipes
Technomyrmex bicolor Technomyrmex detorquens Technomyrmex elatior Technomyrmex horni
Subfamily: Dorylinae Aenictus aitkenii Aenictus biroi Aenictus ceylonicus Aenictus gracilis Aenictus pachycerus Aenictus porizonoides Cerapachys coecus Cerapachys fossulatus Cerapachys fragosus Cerapachys luteoviger Cerapachys typhlus Dorylus orientalis
Subfamily: Ectatomminae Gnamptogenys coxalis
Subfamily: Formicinae Acropyga acutiventris Acropyga rubescens Anoplolepis gracilipes
Camponotus albipes Camponotus auriculatus Camponotus barbatus Camponotus ceylonicus Camponotus greeni Camponotus fletcheri Camponotus indeflexus Camponotus irritans Camponotus isabellae Camponotus latebrosus Camponotus maculatus Camponotus mendax - ssp. integer Camponotus mitis Camponotus ominosus Camponotus rufoglaucus Camponotus reticulatus - ssp. yerburyi Camponotus sericeus Camponotus sesquipedalis Camponotus simoni Camponotus thraso - ssp. diogenes Camponotus varians Camponotus variegatus - ssp. infuscoides, intrans Camponotus wedda Dolichoderus taprobanae Lepisiota capensis - ssp. lunaris Myrmoteras ceylonicum Nylanderia taylori - ssp. levis Nylanderia vagabunda Nylanderia yerburyi
Oecophylla smaragdina Paratrechina longicornis Plagiolepis pissina Polyrhachis aedipus Polyrhachis bugnioni Polyrhachis convexa - ssp. isabellae Polyrhachis curvispina Polyrhachis exercita Polyrhachis gibbosa Polyrhachis hippomanes - ssp. ceylonensis Polyrhachis horni Polyrhachis illaudata Polyrhachis jerdonii Polyrhachis nigra Polyrhachis punctillata Polyrhachis rastellata Polyrhachis rupicapra Polyrhachis scissa Polyrhachis sophocles Polyrhachis thrinax Polyrhachis tibialis - ssp. pectita Polyrhachis xanthippe Polyrhachis yerburyi Prenolepis naoroji Pseudolasius isabellae
Subfamily: Leptanillinae Leptanilla besucheti Protanilla schoedli
Subfamily: Myrmicinae Acanthomyrmex luciolae Anillomyrma decamera Calyptomyrmex singalensis Calyptomyrmex tamil Calyptomyrmex vedda Cardiocondyla emeryi - ssp. emeryi Cardiocondyla minutior Cardiocondyla nuda Carebara bruni Carebara butteli Carebara ceylonensis Carebara deponens Carebara diversa - ssp. taprobanae Carebara escherichi Carebara nana Carebara pygmaea Carebara sinhala Cataulacus granulatus Cataulacus simoni Cataulacus taprobanae Crematogaster anthracina Crematogaster apicalis Crematogaster biroi Crematogaster brunnescens Crematogaster consternens Crematogaster desecta Crematogaster dohrni - ssp. dohrni, gigas Crematogaster pellens Crematogaster ransonneti Crematogaster rogeri Crematogaster rogenhoferi Crematogaster rothneyi - ssp. haputalensis Crematogaster subnuda Dilobocondyla didita Lophomyrmex quadrispinosus Meranoplus bicolor Meranoplus boltoni Meranoplus levis Meranoplus loebli Metapone greeni Metapone johni Monomorium consternens Monomorium floricola Monomorium pharaonis Monomorium latinode Monomorium subopacum Monomorium taprobanae Myrmicaria brunnea Paratopula ceylonica Pheidole barreleti Pheidole ceylonica Pheidole diffidens Pheidole gracilipes Pheidole horni Pheidole latinoda - ssp. angustior, latinoda, peradeniyae Pheidole malinsii Pheidole megacephala Pheidole nietneri Pheidole noda Pheidole parva Pheidole pronotalis Pheidole rugosa Pheidole spathifera - ssp. yerburyi Pheidole sulcaticeps - ssp. sulcaticeps, vellicans Pheidole templaria - ssp. euscrobata Pheidologeton diversus Recurvidris pickburni Rhopalomastix escherichi Solenopsis geminata Solenopsis nitens Stereomyrmex horni Strumigenys godeffroyi Strumigenys inopinata Strumigenys lewisi Strumigenys lyroessa Strumigenys veddha Tetramorium bicarinatum Tetramorium curvispinosum Tetramorium pacificum Tetramorium pilosum Tetramorium simillimum Tetramorium tonganum Tetramorium tortuosum Tetramorium transversarium Tetramorium yerburyi Trichomyrmex criniceps Trichomyrmex destructor Trichomyrmex emeryi - ssp. laevior Trichomyrmex rogeri Tyrannomyrmex legatus Vollenhovia escherichi
Subfamily: Ponerinae Anochetus consultans Anochetus longifossatus Anochetus madaraszi Anochetus nietneri Anochetus pangens Anochetus yerburyi Bothroponera tesseronoda Brachyponera luteipes Brachyponera obscurans Centromyrmex feae - ssp. ceylonicus Cryptopone testacea Diacamma ceylonense Diacamma indicum Diacamma rugosum Harpegnathos saltator - ssp. taprobanae Hypoponera ceylonensis Hypoponera confinis Hypoponera ragusai Hypoponera taprobanae Leptogenys diminuta Leptogenys exudans Leptogenys falcigera Leptogenys hysterica Leptogenys meritans Leptogenys pruinosa Leptogenys peuqueti Leptogenys processionalis Leptogenys yerburyi Leptogenys peuqueti Mesoponera melanaria Myopias amblyops Myopopone castanea Odontomachus simillimus Pachycondyla luteipes Platythyrea parallela Platythyrea clypeata Pseudoneoponera rufipes
Subfamily: Pseudomyrmecinae Tetraponera allaborans Tetraponera nigra - var. insularis Tetraponera rufonigra
The following species were also described from Sri Lanka, but their true identities are currently unknown due to lack of experiments.
Formica fuscicauda Formica subpicea Myrmica obscurata Myrmica pilinodis
Also check Ants of Sri Lanka, a book by Dr. Shriyani Dias
References
https://web.archive.org/web/20140404120146/http://www.kln.ac.lk/science/antDB/
http://www.antweb.org/ http://www.antwiki.org/wiki/Sri_Lanka