Average concentrations of elements in the three species of xylophagous beetles and in samples of variously decayed wood from pine stumps inhabited by larvae (see text for definitions of wood decay categories).

sex diff. – significant differences between sex categories (Mann-Whitney U, pStictoleptura rubra, Cm – Chalcophora mariana, Ar – Arhopalus rusticus; wood categories diff. – significant differences between wood decay categories (Kruskal-Wallis test, pAverage concentrations of elements in the three species of xylophagous beetles and in samples of variously decayed wood from pine stumps inhabited by larvae (see text for definitions of wood decay categories).