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Friday, April 4, 2014
Wednesday, April 2, 2014
කාවයියා/පොල් කාවයියා [Kawaiya/Pol Kawaiya]/Climbing Perch(Anabas testudineus)
Climbing Perch is a common fish inhabiting tanks, ponds, swamps, streams and some time even in lakes which have connected to the sea. It is distributed in both wet and dry lowlands. Climbing Perch is one of the most hardy fish which can survive in extremely unfavorable water conditions and it has been recorded that they can travel certain distance overland from one water body to another. However tree climbing habit attributed to this fish by some authors is not reliably observed. As per Deraniyagala it visits newly sown paddy fields at night to feed on the grain (Deraniyagala P.E.P., 1952). It feeds on macrophytic vegetation, fish fry and shrimps (Pethiyagoda, R., 1991).
Monday, March 31, 2014
Saturday, March 29, 2014
Thursday, March 27, 2014
කූඩලු [Koodalu](Impatiens leptopoda)
An endemic herb growing among rocks or on banks of streams and rivers in rain forests and thickets in more open places of the hill country(Above 1200m a.s.l). Flowers are variable in size and color and color varies from pink, mauve-pink to white with a dark magenta spot towards the base of each pair of lateral united petals.
Tuesday, March 25, 2014
Drepanosticta anamia
Drepanosticta anamia is a recently described endemic damselfly inhabiting small to mid-size shaded stream habitats in primary and secondary wet zone forests from 50-800m a.s.l. altitude in 22 localities in Kegalle, Nuwaraeliya, Colombo, Kaluthara, Rathnapura Galle and Mathara districts (Bedjanič, M., 2010). As per M. Bedjanič flight season stretches from end of April to September with a single end-February record.
My Observations
Above specimen was photographed at Meethirigala forest reserve of Gampaha district adding one more locality to already described 22 locations. It has been observed there in May and June of 2011 and July 2012.
References
Bedjanič, M., 2010. Three new Drepanosticta species from Sri Lanka (Zygoptera: Platystictidae). Odonatologica 39(3): 195-215.
Sunday, March 23, 2014
Friday, March 21, 2014
Red Helen (Papilio helenus)
Red Helen is a rare butterfly found in wet zone forests in all the year round. The males are fond of settling on damp earth on the roads and stream beds. When resting with open wings the forwing is drawn back over the yellow color patches of the hind wing as shown in the picture above, probably to avoid unwanted attraction of predators. Larva feeds on Zanthoxylum tetraspermum, Citrus japonica, and Kudumiris[කුඩුමිරිස්] (Toddalia asiatica) in the field.(Larva also fed on Citrus madurensis [නස් නාරන්] and Citrus sinensis leaves when offered in the lab.)
Wednesday, March 19, 2014
Monday, March 17, 2014
Jerdon's Nightjar/Large-tailed Nightjar/Long-tailed Nightjar/Horsfield's Jungle Nightjar/ දිගුපෙඳ බිම්බස්සා [Dhigupedha bimbassa] (caprimulgus atripennis)
Saturday, March 15, 2014
Thursday, March 13, 2014
කටකළුවා/මුදුහබරා[Katakaluva/Muduhabara]/Trinket Snake (Coeloganthus helena)
The Trinket snake is a common non-venomous, terrestrial snake widely distributed in lowlands up to about 600m elevation. It can be found both in forests and anthropological habitats mostly closer to water bodies. It is active during morning hours as well as dusk and considered as a diurnal snake though nocturnal habitats have been observed too. When cornered Trinket snake expands its fore body and open mouth displaying its black color. Hence the vernacular name Katakaluwa (One with a black mouth). It feeds on rodents, frogs and lizards.
* One depicting in above photographs is a juvenile albino snake with about 36mm length, encountered in a home garden. Distinct black lines of the neck region and black streak behind the eye are faint of this specimen unlike it is with normal snakes. It had red eyes as it is always with albino animals.
Tuesday, March 11, 2014
Sunday, March 9, 2014
Friday, March 7, 2014
Bladderwort (Utricularia moniliformis)
Only endemic member of the bladderwort flower family with local distribution in south-central hills of Sri Lanka (750-2300m a.s.l). It can be found on wet rocks as well as tree trunks. Flowering from July to December. It is a insectivorous tiny herb which lacks true roots to absorb nutrients from the soil. Bladderwort plants have tiny hollow sacks less than 1mm in diameter (bladders) that lie below ground level to capture and digest small protozoans and insect larva.
Wednesday, March 5, 2014
Monday, March 3, 2014
Saturday, March 1, 2014
Blank Swift (Caltoris kumara)
Blank Swift is a rare butterfly found in hill country above 300ft (Woodhouse L.G.O, 1950). Ormiston recorded it from Haldummulla and hills above Rathnapura and Woodhouse from Corbet's gap[most months of the year] and Madugoda [plentiful in March and Apri] (Woodhouse L.G.O, 1950 & Ormiston W., 1924). Above photograph was taken at Sinharaja World Heritage site (~1700ft a.s.l). Its larva feeds on Davidsea attenuata and also Bambusa multiplex only when offered.
Thursday, February 27, 2014
Tuesday, February 25, 2014
Rufous Horse-shoe Bat (Rhinolophus rouxii)
Sunday, February 23, 2014
Friday, February 21, 2014
Wednesday, February 19, 2014
පුංචි ලේනා[Punchi Leana]Dusky striped jungle squirrel (Funambulus obscurus)
The smallest squirrel in Sri Lanka with relatively short tail compared with the other squirrels. It is distributed in wet zone forests from lowlands to higher hills. It is strictly forest dweller though sometime visits adjoining well wooded home gardens. Dusky striped jungle squirrel feeds on insects, grubs, flowers, fruits and often follows mix-species feeding flocks of birds, closer to the ground in search of disturbed insects and grubs by the birds. They are often encountered as pairs and keep contacts with each others with bird-like contact call.
සිංහලෙන් කියවන්න >>
Monday, February 17, 2014
Thursday, February 13, 2014
Malayan (Megisba malaya)
Malayan is a common butterfly occurs from lowlands to hills (Up to about 400ft). The dry seasonal form is large. Males often settle on damp earth and bird dropping to absorb minerals. Its larval food plant are Allophylus cobbe (බූ-කොබ්බෑ\කොබ්බෑ), Mallotus rhamnifolius (මොළබෑ/බුලු හුලු කැප්පෙටියා), Mallotus philippensis, and Mallotus eriocarpus.
.
Wednesday, February 12, 2014
Monday, February 10, 2014
Saturday, February 8, 2014
Thursday, February 6, 2014
සුදු වේවැල්/තුඩරෑන[Sudu Wewal/Thuda rena] (Calamus ovoideus)
Labels:
Arecaceae,
Endemic Flora,
Flora,
Palmae
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Sinharaja Forest Reserve
Tuesday, February 4, 2014
Sharp-snouted shrub frog (Pseudophilautus cuspis)
An endemic shrub frog is confined to the wet lowland close canopy rain forests with little understorey from 150m to 660m a.s.l. Sharp-snouted shrub frog is active both day and night and during the day time it can be found among leaf litter on the ground. Vocalizing males can be found on branches and leaves above the forest floor during the night.
Recorded areas - Millawa near Morawaka, Mederipitiya and Wathugala near Deniyaya,
Above individual was photographed near famous giant Navada tree of Sinharaja world heritage site from Kudawa entrance.
Sunday, February 2, 2014
බාඳුරා වැල්[Badura wel]/Pitcher-plant (Nepenthes distillatoria)
A woody leaf climber reaching top of tall trees or growing over lower vegetation in primary and secondary forests of the lowland wet zone. Also grows in scrublands. The insectivorous habit of the plant is believed to be as an adaptation to meet nutritional deficiency when it occurs in poor soils. However plant can be found in both poor and rich soils. The lid over the pitcher functions as insect attraction due to its reddish green or brown color and also prevent dilution of its insect-digesting fluid with rain water. The fluid in the 'pitcher' part of the leaf is prescribed as a remedy for whooping cough by some indigenous medical practitioners and prescribes to taken orally. The stems are used as rough cordage.
Friday, January 31, 2014
Spot-winged Thrush/ශ්රී ලංකා තිත්පිය තිරාසිකයා/පුල්ලි වල් අවිච්චියා [Sri Lanka Titpiya Thirasikaya/Pulli Wal Avichchiya] (Geokichla spiloptera)
A rare breeding resident inhabiting undergrowth of forests and well wooded areas from wet lowlands to higher hills. Scarce and local in riverine forests in the dry zone. It feeds on insects, worms, etc mainly on the ground, skulking in the undergrowth while turning over leaf litter. It lives as pairs or as solitary birds. The breeding season is from March to April and again from August to September. It build a nest - an untidy mass of twigs, moss and grass- placed in a crown of tree fern or fork of a sapling where it lays two eggs.
සිංහලෙන් කියවන්න >>
Wednesday, January 29, 2014
Sunday, January 26, 2014
First physical observation of Petinomys fuscocapillus (jerdon, 1847) with photographic evidence from Sinharaja World Heritage Site
Small flying squirrel or Heen Hambawa (හීන් හම්බාවා) in Sinhalese is one of the rarest nocturnal mammals of heavy forests of the lower foothills
to higher altitudes (Yapa A. & Ratnavira G., 2013). As per Phillips W.W.A.
its range limited to the hills at medium altitudes with extremely local distribution
(Phillips W.W.A., 1981). Further he has given a list of places from where it
had been recorded up to then (Table 1). Other than Sri Lanka it is found only in
Western Ghats of India and there also it was re-discovered in a coconut grove
in Kerala state in 1989 after one hundred years and it was thought to be
extinct in India till then (Yapa A. & Ratnavira G., 2013 & Nanayakkara
et.al., 2012 quoting Kurup, 1989). In
2007 Jayasekara et.al. recorded it from Sinharaja forest with a black &
White picture captured by a camera trap placed on a fruiting tree to assess
fruit consumption by birds and mammals of a tropical rain forest (Jayasekara
et.al., 2007). Most recent observation
of it is from Laggala-Illukkubura road of Knuckles range made by Nanayakkara
et.al on 26th January 2013. They have observed and photographed a
single specimen while it was feeding on tender part of the shoot and leaves of a climber at 2130 hr on a tree 9m above ground level in a well-developed
semi-evergreen forest habitat . They have not
observed gliding of the animal (Nanayakkara et.al, 2013). Hitherto only color photographs available of this illusive mammal was from them and it was the first physical
examination of this species from Sri Lanka after 78 years.
Location
|
Altitude (ft)
|
|
1
|
Forests of Dimbula (in
1850s)
|
4500
|
2
|
Dickoya
|
|
3
|
Gammaduwa in the east
Mathale hills
|
2500ft
|
4
|
Kitulgala
|
900
|
5
|
Wellawaya
|
600
|
6
|
Adam’s peak wilderness
|
Food:
It is believed that Small flying squirrel is feeds on wild
fruits, berries, nuts, shoots and young leaves and possibly also sappy bark of
certain trees (Phillips W.W.A., 1981)
Habits:
Small flying squirrel is purely nocturnal and arboreal and it
spends day time in a hole of a tree trunk or branch of a large tree. It carries
its tail curled over its back when stationery and feeding. Not much information
available on its breeding and it is said that two young are born in a hole,
lined with vegetable fibres, etc. in which their mother lives day hours.
Observation and
discussion
On 14th January 2014 we were able to observe and
photograph a Small flying squirrel at a place close to the Sinharaja forest
reserve (Outside the protected area) from around 11.30 PM to 3.00AM of 15th
January 2014 (It was not at the site continuously during the observation period
but appeared there time to time). It was observed about 2m above the ground while feeding probably on young shoots and leaves of a mango tree (Mangifera indica). Short distance (less than 3m) gliding
also noticed at least once during the observation period. Most of the
time except when moving from one place to another it kept its tail draped over
its back. It was not much shy and not paid
much attention toward camera flashes and torch
lights. According to all available published data
this might be the second instance of the physical observation of this rare
mammal in recent history with photographic evidences and first instance of observing it in Sinharaja forest reserve area though existing of it there has been already proved with camera traps (Jayasekara et.al., 2007). Most important fact here is
that this observation was made not inside the dense forest but small secondary forest area close to Kudawa
conservation center office and this observation highlights the important of conserving not only Sinharaja
forest itself but also buffer zone forest areas surrounding the Sinharaja
heritage site.
References
Kurup G.U., 1989 Rediscovery of small Travancore Flying Squirrel. Oryx 23: 2-3
Phillips W.W.A., 1980 Manual of the mammals of Sri Lanka Part 2: 175-177
Weerakoon D. K. 2012. The Taxonomy and Conservation Status of Mammals in Sri Lanka. In: The National Red List 2012 of Sri Lanka; Conservation Status of the Fauna and Flora. Weerakoon, D.K. & S. Wijesundara Eds.,Ministry of Environment, Colombo, Sri Lanka 134-144pp
Yapa A. and Ratnavira G. 2013 The Mammals of Sri Lanka 212-213
Saturday, January 25, 2014
Hump-nosed Lizard/Lyre-headed Lizard/ගැටහොඹු කටුස්සා/කරමල් බෝදිලිමා/බොහොඬා[Gatahombu Katussa/Karamal Bodilima/Bohonda](Lyriocephalus scutatus)
Hump-nosed Lizard is an endemic arboreal lizard found in shaded forests and adjoining well wooded home gardens and plantations from wet lowlands to mid hills (up to about 1600m a.s.l.). It feeds on insects[termites, butterflies, moths], earthworms, young shoots and buds as well as fruits on both trees and on land. It is a diurnal lizard and during night ascending high up trees to sleep. If cornered it opens its mouth wide to show the bright red color inside, change body color and also practicing death feigning.
Thursday, January 23, 2014
Wednesday, January 22, 2014
රන් දෝතළු[Ran dothalu] (Loxococcus rupicola)
Ran dothalu is a rare endemic palm confine to the south-western rain forests from lowlands to hills (300 to 1500m a.s.l.). It can be found as small populations on shady rocky outcrops near streams. Seeds use as a substitute for Betel-nut palm for mastication with betel. This palm recently become a popular ornamental plant and despite the fact that it is protected under the law, illegal over exploitation widely practices and hence become an endangered plant.
Monday, January 20, 2014
Frogmouth/මැඩිමුහුණා[madimuhuna] (Batrachostomus moniliger)
Frogmouth is a rare breeding resident found in dense forests and forests edges in all climatic zones while scarce in hills and comparatively common in the wet zone. It is a strict nocturnal bird and spends the day perch across a branch with beak pointing upwards and the facial plumes erected forwards looking rather like a broken branch. It feeds mainly on insects like beetles. The breeding takes place from January to March and again from August to September. The nest is a small pad set on a horizontal branch, well camouflaged with lichens and barks which support a single egg which is brooded during the day by the male bird (probably the female broods at night - (Henry G.M., 1998))
Saturday, January 18, 2014
Thursday, January 16, 2014
Tailless Lineblue (Prosotas dubiosa indica)
Common butterfly found in forests and such well wooded areas throughout the island. Male settles frequently on damp earth to absorb minerals. Larva feeds on Senegalia caesia (හිඟුරු වැල්), Dalbergia rostrata, Mimosa diplotricha (Giant sensitive plant/Creeping mimosa), Mimosa pudica (නිදිකුම්ඹා/Sensitive plant/Touch-me-not), Albizia odoratissima (සූරිය මාර), Pithecellobium dulce (මැනිලා සියඹලා/Madras thorn/Manila Tamarind), Samanea saman (මාර/පිනි මාර/පාරෙ මාර/Rain tree) and Allophylus cobbe (බූ-කොබ්බෑ\කොබ්බෑ).
Monday, January 13, 2014
Sunday, January 12, 2014
Kelaart's Dwarf Toad/කෙලාර්ට්ගේ කුරු ගෙම්බා[Kelaartge Kuru Gemba] (Adenomus kelaartii)
Kelaart's Dwarf Toad is an endemic frog inhabiting wet zone forests and adjoining well wooded areas from lowlands to sub-montane region. It is a terrestrial species though occasionally climbs on trees and walls of the rural houses. Kelaart's Dwarf Frog active mainly during the night and in the day time it hides under rocks, decaying logs and among leaf litter along stream banks. Sometimes more than one individuals can be seen hiding together in a same rock crevice.
Friday, January 10, 2014
Wednesday, January 8, 2014
New distribution record for Libellago corbeti (van der Poorten, N., 2009)
Introduction
Libellago corbeti (Ebony Gem) is an endemic damselfly first identified in
July 2007 from two male specimens seen near Kudawe and later on another two females from
same locality in April 2008. It was described as a new species by Nancy van der
Poorten in 2009 (van der Poorten, N., 2009). Additional sightings of it from the
type locality as well as from several other forests of the south western wet
zone were recorded subsequently (van der Poorten, N., 2011). Those additional
places are -
1)
Near the start of the Moulawella nature trail, river
running down from the Kudawa entry point and near the stream beside research
station in the Sinharaja forest reserve.
2)
A stream in the Haycock hill – Hiniduma.
3)
A stream in the Morapitiya forest reserve.
4)
A stream near entrance of Kanneliya forest
reserve.
5) A specimen collected in 1892 by Col. Yerbury from
Kottawa (Probably the Kottawa forest reserve of Galle) and now deposited at
Natural History Museum London.
Observation
During a field visit to the Katepola, a remote village in
Rathnapura district on 25th of December 2013 we could photograph a male
specimen of Libellago corbeti in a stream - a upper tributary of Kalu river - beside a rubber plantation. Eventhough the stream running through rubber
estates and home gardens, stream itself and banks are well wooded and home to
considerable number of fauna and flora including several endemics. Libellago corbeti both males and females have been observed in that stream since May 2013 (Ishara Harshajith Wijewardhane, Personal communication, December
25, 2013)
Discussion
Hitherto
all published records of Libellago corbeti are from dense rain
forest streams and this might be the first sighting of it from a disturbed
habitat and also from a site with least protection from environmental authorities,
unlike all other places mentioned above with considerable protection under the
law. This record of it from
further north of the type locality and all other additional places indicates that
it might be distributed in wider area and also not very rare as previously thought. Currently it is categorized as a critically endangered species (van Der Porten
N. & Karen Conniff , 2012)
References
van der Poorten, N., 2009. Libellago corbeti sp. nov. from
Sri Lanka (Odonata: Chlorocyphidae). International Journal of Odonatology 12
(2): 223-230, pl. V.
van der Poorten, N., 2011. Additional records of Libellago
corbeti van der poorten, 2009 in Sri Lanka with additional comparative notes on
behavior. Agrion Newsletter of the worldwide dragonfly association 15(1): 18-20.
van Der Porten N. & Karen Conniff, 2012. The Taxonomy and Conservation Status of the Dragonfly Fauna (Insecta: Odonata) of Sri Lanka. In: The National Red List 2012 of Sri Lanka;Conservation Status of the Fauna and Flora. Weerakoon, D.K. & S. Wijesundara Eds.,Ministry of Environment, Colombo, Sri Lanka. 1-11 pp
Monday, January 6, 2014
Saturday, January 4, 2014
Thursday, January 2, 2014
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