ArticleNeotropical entomology2026
Canopy Weevil Diversity Across an Elevational Gradient in a Southern Ecuadorian Tropical Montane Forest.
Article in Neotropical entomology, 2026. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Not yet cited in PubMed.
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Abstract
Tropical montane forests (TMFs) harbor exceptional biodiversity, yet canopy insect assemblages remain critically understudied. Weevils (Coleoptera: Curculionidae) are essential components of forest ecosystems, playing key roles in nutrient cycling and plant interactions. This study provides the first canopy-level assessment of Curculionidae diversity along an elevational gradient (520-1,000 m above sea level) in a southern Ecuadorian TMF using insecticidal fogging. We collected 1,178 individuals representing 223 morphospecies from 28 sampling units across three forest plots. Richness estimators indicated that sampling captured 36-81% of expected species, suggesting a vast undetected diversity and a non-asymptotic richness pattern. The highest α-diversity was recorded at 1,000 m a.s.l. Notably, Plot 2 (880 m a.s.l.) exhibited the lowest Shannon diversity (H' = 3.41) despite higher richness than the lowest site, driven by the extreme dominance of a single morphospecies (MSP 17), which accounted for 65.4% of individuals at that site. β-diversity analysis revealed high community dissimilarity (β
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