Butterfly Dragonfly Race 2018
Annual Butterfly Dragonfly Race organized by BCSSL was held successfully this time for the 3rd consecutive year, on Saturday, 19th of May, at Diyasaru Park, Thalawathugoda.
The objective wass to promote butterfly and dragonfly watching in urban wetland parks around Colombo in order to increase public engagement with nature, and to increase awareness on their conservation.
කෘමිතුරු | Krumithuru
BCSSL launches the first edition of their quarterly newletter - aptly named 'Krumithuru' (කෘමිතුරු), in the aim of improving the knowledge as well as the creative skills of the member community.
This fabulous butterfly can be found in scrublands and grasslands throughout the country. But it is locally common and more abundant in the hills. Adult butterflies usually seen flying around muddy open areas such as abandoned paddy fields and railway roads where they tend to visit little flowers. It is a fast flying insect and often settles on the ground with their wings open.
Size, colour and the pattern can be highly variable, but the blue appearance of this remarkable butterfly makes it easy to identify.
The larva of this forest loving, canopy dwelling, very rare butterfly is one of the prime example of the ant association with lycaenid larvae. Typically, Common Tinsel larvae can be seen attended by many Crematogaster ants. There are 7 larval food plants have been confirmed so far. Larvae usually find shelter inside little ant pavilions, typically constructed by the ants on the undersides of leaves and branches.
The common pupation site of this larva is the nearest Crematogaster ant nest. This symbiotic relationship can be seen among some other lycaenidae too.
Lowland Wet Zone
Lowland wet zone represents the lands below 1000mm in elevation in the south western parts of Sri Lanka. This part of the country characterized by a rainfall of 2500mm to over 5000mm and its year-around warm, wet climate. This zone undoubtedly bares highest amount of the biodiversity in the country.
Lowland rainforests have a high proportion of endemic plant species and endemic animal species. Consequently, the lowland wet zone has many endemic butterfly species as well, such as Woodhouse's Four Line Blue and Sri Lanka Cerulean.
Butterflies have been a fascination to many people since their childhood, due to their colorful and delicate wings which made them the fairies of the real world. Sri Lanka has been world famous for the phenomenon of internal butterfly migration and it has been documented by many international authors. Locally, we call this incident as, "Butterfly pilgrimage of Mount Sri Pada (Adams Peak) in order to worship the footprint of Lord Buddha". Even though this migration still exists, the number of individuals has been drastically reduced over the years. This reduction is also true for many of the other non-migratory species as well due to two major reasons; habitat destruction and degradation. The forests were cleared for coffee and tea cultivation, and the process is still continuing at an alarming rate with the increasing human population. Many of the suitable habitats for butterflies together with other living beings are being destroyed due to these activities. Further, there are some rare butterflies who require very specific micro habitat conditions. Tree felling alters the light intensity that will penetrate into the forests, and high use of chemicals for cultivation and industrial purposes will alter the water, soil and finally the plant chemical compositions which will cause significant negative impacts on all flora and fauna. Effecting fauna population will directly influence the life cycles of lepidopterans.
These microhabitat requirements are not only restricted to the adult butterfly, but most importantly, it is required for early stages i.e. egg, larva and pupa. Due to their short life span, unexpected changes to weather pattern could also be a major threat to them, which is mainly happening due to climate change and global warming.
The presence of these tiny insects will beautify our environment and make us happy. More importantly, they will contribute to the ecological balance of the environment, mainly by helping to pollinate many fruit bearing plant species through their own feeding activities. From a conservation point of view, butterflies can be categorized into two groups. The first group is the butterflies that do not require specific microhabitat requirements; therefore, they can be conserved within urban environment. "Butterfly gardening" is a well-known conservation technique throughout the world, which provides suitable conditions for butterflies within urban areas. Key approach is to provide them with their larval food plants and nectar plants, while making sure to get rid-off of toxic chemicals such as artificial fertilizers and pesticides. Any person can do this conservation activity in their home garden, irrespective of its size. The second category is the "butterflies that require specific microhabitat requirements". It is highly unlikely to recreate the micro habitat they need in a new environment due to time consumption and expenditure as well as extensive research work that is needed to understand the requirements of some of these species. Conserving existing habitats and upgrading degraded habitats are the best strategies that should be implemented at governmental or organizational level.
BCSSL is trying to conserve these insects at their best. Anyone who is interested in these activities is welcome to join hands with us.
Join with us because "Enthusiasm leads the way". BCSSL conducts numerous events to inspire our own members as well as the general public.
You can participate in public lectures, field visits and many other activities organized by us. View more details on our events page.