Merrem’s Hump-nosed Pit Viper/පොලොන්තෙලිස්සා/කුණකටුව/ගැට පොලගා[Polon Thelissa/Kunakatuwa/Gata Polaga] (Hypnale hypnale)

Common venomous terrestrial snake found in anthropological habitats and plantations (Especially tea, coconut and rubber plantations) from coastal areas up to about 600m of the central hills. More abundant in the south-western wet zone than in the northern and eastern dry lands. However it appears to be absent in undisturbed forests in Sri Lanka.  It is a nocturnal snake and during the day time rest under stones, logs and among leaf litter sometime with its head keep at an angle of 45 degrees to its body resembling a dry leaf. When  disturbed it flattened its body, forms it into ‘S’ shaped loops, often vibrates the tail and lashed out. Rapid tongue protrusion has been observed too.  It preys on skinks, shrews, geckos, frogs and rodents. Instances of feeding on reptile eggs and snakes are also observed. Merrem’s Hump-nosed Viper is responsible for the highest incidents of snake bites in Sri Lanka (~27%) with occasional fatalities though its venom is considered as moderate.

රත් කයිලයා/දම්කොල සාලයා [Rath Kaiyala/Damkola Saalaya]/Giant Danio (Devario malabaricus)

Very common fish widely distributed throughout the lowlands of both wet and dry zones up to the higher hills. It is common in flowing water though occurs also in tanks, reservoirs and paddy fields.  Giant Danio is a mid-water fish and it forms medium size shoals.  

Episcia reptans

Low-growing herb native to the South America. Introduced as an ornamental plant and cultivated in Sri Lankan home gardens, often in shade.

ගිරාමලිත්තා/Gira Maliththa/Hanging Parrot/Lorikeet (Loriculus beryllinus)

An endemic and locally common bird of forests and well wooded home gardens in wet lowlands to mid hills. Also found in foothill areas of the dry lowlands. Hanging parrot is a strictly arboreal bird and usually encounters as solitary birds or as pairs (Warakagoda D et. al., 2012). However above bird was captured in a feeding flock, travelling through the Acacia plantation of Meethirgala forest reserve with at least 50 companions of the same species. It feeds on fruits, nectar of flowers, seeds and also juice of palms collected in toddy-drawers pots. While feeding it has very restless characteristic behavior of hangs at all sort of angles. It sleeps hanging head downward from a slender, leafy twig. Hanging Parrot breeds in a tree hole from March to June and sometime again from August to September. Female builds the nest with strips nibbled from the edge of green leaves and lays 2-3 white color eggs.  

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ඉපිල් ඉපිල්/Ipil Ipil/ Wild Tamarind/Cofee bush (Leucaena leucocephala)

An introduced shrub or small tree cultivated as green manure, fodder, for afforestation and as cover plants of tea estates. It is native to the tropical America. Since it has the ability of rapidly spreading to adjacent areas and invade all other native flora, Ipil Ipil is now considered as an invasive.

Chocolate Soldier (Junonia iphita pluviatalis)

Common butterfly found in open jungle areas of all elevations of the island all the year round. It takes part in migrations especially in November to December. Chocolate Soldier often settles on damp earth. Its larva feeds on Strobilanthes diandra (නෙළු), Eranthemum capense, Phaulopsis dorsiflora, Ruellia patula, Ruellia prostrata (නිල් පුරුක්), Dyschoriste nagchana and Barleria prionitis (කටු කරඬු/Yellow Hedge Barleria)

Soft khaki weed/Prostrate globe amaranth (Gomphrena celosioides)

A native herb of South America. Introduced to Sri Lanka and now widely distributed along roadsides, rocky places and waste lands. 

Purple Leafblue (Amblypodia anita)

Rather rare butterfly occurring from sea level up to about 300m, particularly in the dry zone. Males settle on wet patches on the roads, or on carrion to absorb minerals. Larva feeds on Olax scandens, Olax imbricata and probably on Olax zeylanica.  

වල් අබ/රන් මානිස්ස/Wal-Aba/Ran-Manissa/Yellow Spider Flower (Cleome viscosa)

An indigenous and very common herb found along roadsides, cultivated grounds and rocky and sandy places. 

Mexican fireweed/Lesser green poinsettia (Euphorbia heterophylla)

An introduced very common weed widely distributed throughout the island along roadsides and waste places. It is a native plant of tropical America.  

Large Cuckooshrike/මහ කොවුල්සැරටිත්තා/මහ කොවුල්ඇස්පටියා[Maha Kovulsaratiththa/Maha Kovulaspatiya] (Coracina macei)

An uncommon breeding resident found in forest areas of lowlands up to mid hills. It is less common in wet zone. Usually a solitary bird though some time occurs as pairs or as small flocks. Large Cuckooshrike is a bird of the canopy and feeds mainly on insects. It's breeding season is from May to June and lays 2 eggs in a shallow cup made out of fine twigs, leaf-stalks, lichens etc. and felted together with cobwebs.

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Redspot (Zesius chrysomallus)

Common butterfly found all over the island from lowlands to mid hills up to about 2500ft. Larvae of Red spot has symbiotic relationship with large red ants. Red ants feed on liquid exuded by the larvae and in turn are attended by them. The larva feeds on Terminalia bellirica, Bridelia retusa (කැටකෑල), Canthium coromandelicum, Terminalia catappa (කොට්ටම්බා/කොට්ටන්/Indian almond/Country almons),  Terminalia arjuna (කුඹුක්), Falcataria moluccana (මාර), Symplocos acuminata, Cassia fistula (ඇහැළ/Indian Laburnum/Shower of Gold), Psidium guajava (පේර/Guava), Dendrophthoe falcata (පිලිල),  Cassia roxburghii (රතු වා/Ceylon cassia/Red cassia),  Senna auriculata (රණවරා/Matara Tea/Tanner's Cassia), Grewia damine (දමිණිය), Acacia longifolia, and Sesbania grandiflora (කතුරු මුරුංගා/Agati/Vegetable hummongbird).

කබර රදනකයා(Kabara Radanakaya)/ඉරි කරවලා(Iri karawala)/Shaw’s Wolf Snake/ (Lycodon striatus)

Shaw’s Wolf Snake is a small (100-400mm) terrestrial and nocturnal snake distributed mostly in wet zone though occurs rarely also in intermediate and dry zone areas. It is a non venomous and inoffensive snake, which balls itself and hides its head underneath these coils (See right bottom picture) when disturbed.  It preys mainly on geckos and skinks during the night and stay under decaying logs, loose soil, earth cracks and leaf litter during the day time. Parental care of eggs is observed among these snakes and it lays 2-3 eggs.

බෙරු - දියනිල්ල/Beru-diyanilla/Creeping water primrose (Ludwigia adscendens)

An indigenous common herb with prostrate floating stems, grows in water margins of ponds, tanks and flooded paddy fields in the low country. 

නිල් කටරොළු/Nil Katarolu/Blue butterfly pea/Butterfly bean (Clitoria ternatea)

An indigenous (Introduced ? >>) slender vine found along roadsides and scrub lands in the dry low lands while cultivated in home gardens of the moist regions. Flowering throughout the year and sometime white forms and much longer flowers occurs in cultivation. 

Apefly (Spalgis epeus epeus)

Rare butterfly distributed in the low country to mid hills of about 500m a.s.l. As per Woodhouse Larva of Apefly unlike with other butterflies feeds on scale insects (Coccidae) especially “Mealy bug” and is never known to eat vegetable food (Woodhouse L.G.O. 1950) But de’Abrera stated that it is just a keeping company with Mealybugs (de’Abrera B., 1998). Pupa is remarkably like the head and face of an ape. Hence its vernacular name Apefly. 

Tree Nymph (Idea iasonia)

An endemic and rare butterfly found in wet forests from lowlands to higher hills. Occurs rarely also in some Northern and Eastern dry zone forests. It is usually found near water streams and easily notice by its floating and sailing like slow flight, often high among tree tops. Its only known larval food plant is Parsonsia alboflavescens (කිරි අඟුණ/වල් අඟුණ)

වතු-සුද්ද/Sri Lanka Jasmine/Grape-Jasmine/Wathu-Sudhdha (Tabernaemontana divaricata)

Large shrub flowering throughout the year. Native to the Southern Himalayas and cultivated in Sri Lankan gardens since ancient time as an ornamental plant.  Variety with broad corolla lobes also exist. 

ගස්-ලබු/පැපොල්/Papaya (Carica papaya)

Small tree with usually unbranched stem of about 5 to 7 m tall.  Native to tropical America and cultivated throughout the island. Fruits edible. 

නමිනම්/Nam-Nam (Cynometra cauliflora)

Native tree of Malaysia introduced into Sri Lanka apparently before mid 18^th century. Fruits edible.