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The communities of aquatic insects in Chilean inland waters are characterized by the presence of determined species in function of water quality, but there is scarce information about statistical ecology in insects communities structure. The aim of the present study was to apply the null models for explain the structure of aquatic insects in Maquehue, a small river located in an agricultural zone close to Temuco town (38°S, Araucanía region, Chile). The results of species co-occurrence null models revealed that species associations are random, whereas the niche sharing revealed that species share ecological niche, and in consequence there are interspecific competition. The reported taxa are similar with communities for other north Patagonian rivers, about community structure.

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