Ten trap nights retained positive moth richness warmth slopes in three of four British samples in 1992-2015

We tested whether equal trapping effort removed the warmth link to recorded moth richness. We used 685 trap-months from England and Scotland in 1992-2003 and 2004-2015. We calculated expected core taxon richness in ten random observed trap nights. Models controlled trap by month, rainfall, sample count, mean sample date and time. Ten-night slopes were +2.54, +3.88, +1.53 and +3.74 taxa per C. Corrected intervals were above zero in both English samples and later Scotland. The early Scottish interval included zero. Fixed-night slopes exceeded fixed-individual slopes in those same three samples. The two measures answer different questions. Variable night count alone cannot explain the repeated warmth link under this model. Adult activity, capture, abundance and emergence can still explain it. Coarse weather, missing visits, few years and selected catches limit inference. This follow-up reuses one archive and prior campaign records. It does not identify a causal climate or pollution effect. Code, aggregate evidence, source hashes and a retrieval recipe are included.