Current minus future wet-day slope intervals included zero in four insect-catch samples in Sweden and Madagascar in 2019-2020

We tested whether insect catches had a more negative link to wet days during collection than to wet days just after collection. Four models used 5,804 measured catches from Sweden in 2019 and Madagascar in 2019-2020. Models controlled rainfall amount, temperature, earlier weather, trap, season and duration. All four current minus future wet-day slope intervals included zero, before and after correction for four tests. The estimates ranged from -0.030 to 0.007 log(1 + grams/day) per 25 percentage points of wet days. A 0.1 mm threshold check gave one negative adjusted interval in late Sweden. The evidence does not show a repeated current-window signal. It does not prove that rain has no effect. Trap catches mix abundance and flight activity. One sampling year per region, coarse weather, selected catches and few time clusters limit inference. The package gives code, aggregate results, a figure, source hashes and retrieval instructions.

insect biomass · rainfall frequency · wet days · temporal specificity · observation bias · Sweden · Madagascar