FISH for the 5S rRNA and histone H3 genes in five Scarabaeinae representatives. (a) Coprophanaeus cyanescens, (b) C. ensifer, (c) Phanaeus splendidulus, (d) Deltochilum verruciferum and (e) Eurysternus caribaeus. The arrows indicate the sex bivalents. Note the co-localization of the two clusters in all cells, and the presence of only one cluster for the two genes on the × chromosome in (e). Bar = 5 μm.