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Checklist of Butterfly Fauna of Dinajpur, Bangladesh.

S. Chowdhury
Department of Zoology, University of Dhaka, Dhaka-1000

U. Aich
Department of Zoology, University of Dhaka, Dhaka-1000.

M. K. Dash
Department of Zoology, University of Dhaka, Dhaka-1000

Abstract/ Executive Summary:

Butterflies are one of the most important assemblages of insects that act as biodiversity indicators as well as nature’s gardeners. Because of habitat destruction for developmental activities in urban environment and unscientific management of natural resources, most of the butterfly species are disappearing and their survival is under threat. The present study was conducted to identify the status of butterflies from June 2013 to June 2014 in Dinajpur. A total of 71 species of butterflies were found which belong to six families and 47 genera. Highest number of species and genera are from the family Lycaenidae whereas lowest number of species and genera are from the family Riodinidae. However conservation awareness may be helpful in raising the number of these beautiful creatures to a blessed level in the near future.

Keywords: Butterfly, Butterfly distribution, Checklist, Dinajpur, Habitat.

Location: Dinajpur, Bangladesh

Start Date: 00-06-2013

End Date: 00-06-2014

Program Area: Pest Management

Commodity: Butterfly

Objectives:

The purpose of the study was to get a clear concept on the total number of butterfly observed in Dinajpur district and to get an idea of the number and abundance of butterfly families.

Methodology:

2. Study Area: Dinajpur is bounded by Thakurgaon and Panchagarh district in the north, Gaibandha and Joypurhat district in the south, Nilphamari and Rangpur district in the east, and the state of West Bengal, India in the west. The total area of the district is 3,437.98 km². Annual average highest temperature is 33.5 °C and lowest is 10.5 °C; annual rainfall is 2,536 mm. Main rivers are Dhepa, Punarbhaba, and Atrai. The present report is prepared on the basis of field studies, some conservational efforts and butterfly monitoring conducted during June 2013 to June 2014. Butterfly monitoring is not an easy task and some instruments are needed to identify the respective butterfly accurately.Various instrument including a digital camera (Sony DSC W560 Cybershot), a semi SLR camera (Canon Powershot SX 510 HS) for taking photographs of that particular species were used. Sometimes sweep nets were used to catch them and identify them in the laboratory. In few cases, specimens were collected with sweep nets, placed in a plastic bottle or plastic bag and carried to the laboratory for further identification. Sometimes specimens were caught former identification and then released without being harmed. Collected butterflies were identified using field guides,various useful books and an identification key developed by Evans, 1932. During the study period, the butterflies were photographed several times to facilitate accurate identification. A routine butterfly monitoring at the study site was carried throughout the study period,except rainy mornings.In summers butterfly monitoring was started around 8.00 am and around 9.00 amin the winter. Sometimes short visits were made for an hour. No study was conducted during night hours.

Source of Information: Journal of Entomology and Zoology Studies 2014; 2 (5 ): 156-159

Article Link (Online Journal):

Funding Source:

Budget:

Total Budget (Tk.) :

Achievement/Findings:

Present study illustrates the importance of the area as a good habitat for butterfly fauna. Seventy one species of butterflies, belonging to six families, were recorded during the study. Control of habitat destruction, exploitation of its wilderness, human interference and pollution by visitors and students can be helpful in conservation of these winged beauties

Knowledge Management: Journal