International Journal For Multidisciplinary Research

E-ISSN: 2582-2160   •   Impact Factor: 9.24

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Volume 8 Issue 5
September-October 2026

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Beyond the Pest List: Community Structure, Functional Guilds and Site-Level Diversity of Insects in the Farmland of Hanumangarh District, Rajasthan

Author(s) Nitesh, Dr. Ravikant Sharma
Country India
Abstract Farm insects supply pest suppression, pollination and decomposition, yet baseline inventories for north-western India are scarce. We sampled insects at six sites in as many tehsils of Hanumangarh district, Rajasthan, across 24 fortnightly rounds using five standardised methods, and analysed community structure, site-level diversity and functional guilds. The survey yielded 18,742 individuals of 96 species in eight orders. Hemiptera supplied 48.1 percent of individuals and Coleoptera the most species (20). Community diversity was high (H′ = 3.654, J′ = 0.800, 1/D = 26.9) and dominance moderate, with the five commonest species making up 31.3 percent of individuals. Bhadra was richest (92 species; 86.1 when rarefied to 2,410 individuals) and Rawatsar poorest (71), yet site-by-fortnight diversity did not differ significantly among sites (p = 0.36) and mean Bray–Curtis dissimilarity was only 0.26. Herbivorous pests accounted for 62.9 percent of individuals, predators 22.4, parasitoids 3.8 and pollinators 8.4, with two honey bee species supplying 93 percent of pollinators. The structurally most varied site had the highest ratio of natural enemies to pests (0.59). We discuss implications for conservation-oriented pest management and for local biodiversity documentation.
Keywords insect diversity; agroecosystem; Hanumangarh; functional guilds; natural enemies; Shannon index; Rajasthan
Published In Volume 8, Issue 5, September-October 2026
Published On 2026-10-06
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E-ISSN 2582-2160
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CrossRef DOI prefix of IJFMR is 10.36948/ijfmr

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