Ancestral state reconstruction and sampled tip states of coxo-penial musculature across the Hymenoptera. Blue = Formicidae; yellow = Leptanillinae Left and right topologies are identical. Node reconstructions not shown when all sampled descendants were scored as uncertain or inapplicable. See Supplementary Document 1 for explanation of inapplicability and additional notes. Cells represent characters. Cell fill represents character states: white = absent; black = present; diagonal lines = polymorphic absent/present; grey dots = uncertain; solid grey = inapplicable. Left tree: coxo-penial promotors; cells in left-to-right order: 9cppd (j), 9cppv1 (h), 9cppv2 (h’). Right tree: coxo-penial remotors; cells in left-to-right order: 9cprd1 (k), 9cprd2 (l), 9cprv1 (si), 9cprv2 (i).