Ash-free dry mass (AFDM) values are presented for the adult stage of 63 caddisfly species commonly found throughout the northcentral US. Weights ranged from 0.01 mg for the smallest species to 7.22 mg for the largest. These values represent the first published data on the AFDM of the adult stage of Trichoptera, and can be used in other studies for more precise assessments of stream conditions without destruction of specimens. This increased precision is demonstrated herein by re-analyzing a previously published data set.

中文翻译：

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美国中北部的球虫（Insecta，Trichoptera）的无灰干质量值。

呈现了美国北部中部常见的63种蝇科成年阶段的无灰干质量（AFDM）值。重量范围从最小物种的0.01毫克到最大物种的7.22毫克。这些值代表了Trichoptera成年阶段AFDM的首次公开数据，可用于其他研究中以更精确地评​​估河流状况而不会破坏标本。通过重新分析以前发布的数据集，可以证明这种提高的精度。