The seasonal variations of butterflies at Sathchari National Park, Habiganj, Bangladesh

Abstract :

The tropical semi-deciduous Satchari National Park lies in northeast Bangladesh. Elevational gradients and the local microclimate make Bangladesh's northeast butterfly habitat more diverse and abundant. Between January and December 2021, observations were made from 8:30 a.m. to 5:30 p.m. 7,635 individuals from 122 species and five groupings were found. Nymphalidae (39%), Lycaenidae (24%), Hesperiidae (17%), Pieridae (11%), and Papilionidae (9%). Butterfly identification relied on observation and Canon 9000d camera pictures. Before being photographed and released, specimens are sometimes caught for identification. The species was identified using Kehimkar (2008), Kehimkar (2016), and Evans (1932) keys. Seasons affected butterfly diversity, evenness, dominance, and abundance. The diversity indices show that butterflies are evenly dispersed throughout the community in pre-monsoon SWI (H) (4.68), PEI (J) (1.0), and SDI (D) (1.0). The lowest pre-monsoon SWI (H) of 4.48 and PEI (J) of 0.9 show that the butterfly population is uniformly dispersed throughout the community.


Keyword :

Butterfly, seasonal-variation, diversity, richness, evenness, Sathchari, Bangladesh


Author(s) : Rashid, N. U., Oli, M. H.
Downloads : 13
Published Issue : 2023 Vol. 18 Number 1


2023 Vol. 18 Number 1