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The present study was carried out to reveal the checklist of butterfly species in the Tadoba National Park, Chandrapur area of 623 sq. km. Study was carried out from 2011 to 2021. A total of 134 species were recorded, with an addition of 27 new records for Tadoba National Park. Of the total, 60 species were very common, 34 species were common, 9 were frequent common, 19 were rare, and 12 were very rare. Most of the butterflies recorded belong to the Nymphalidae (43 species) with 4 new records. Of Lycaenidae, 41 species with 12 new records. In Pieridae 19 species with 3 new records were recorded. A total of 20 Hesperiidae species with 6 new records and 10 species were recorded from the Papilionidae with 2 new records and one species recorded from the family Riodinidae. About 12 species of the recorded ones come under the protection category of the Indian Wild Life protection Act 1972. The study provided an updated list of butterflies of Tadoba National Park.

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Aim The aim of this study was to investigate the ecological factors affecting the distribution of the rare, endangered and medicinal species of Vaccinium arctostaphylos L. in ecotone rangelands of Namin County in 2019.
Materials & methods Sampling were performed from the presence and absence locations of V. arctostaphylos in eight habitats. Soil samples were taken from a depth of 0-30 cm and physiographic variables in were recorded. Moreover, a digital elevation model, slope and aspect map was derived. Rainfall and temperature gradient maps, was derived using gradient equations, and the values for sampling points were extracted. Data analysis performed by independent t-test and discriminant analysis test.
Findings Results showed the Stream Power Index (SPI) (p<0.05), pH, EC, lime, soluble sodium, organic carbon, soil texture and species density (p<0.01) are significantly different between the presence and absence of the species. Results of discriminant analysis showed the three functions explained 86.4, 10.7, and 2.8% of the total data variance, respectively. Generally, 19 variable including elevation, slope, aspect, precipitation, Topographic Wetness Index (TWI), plan curvature index (PC), SPI, pH, EC, lime, phosphorus, soluble potassium, soluble sodium, magnesium, organic carbon, bicarbonate solution, saturation percentage (SP), sand percentage and species density were identified as the important factors affecting the distribution of V. arctostaphylos. SP was the most important factor in the presence and absence of species.
Conclusion Generally, by identifying the most effective ecological factors on the distribution of V. arctostaphylos, effective steps have been taken to improve the habitat of the rare species.