Tree showing geographical distribution of Blattoidea and classification of Blattidae into subfamilies. Within Blattidae, geographic distribution shows greater congruence with phylogeny than the ‘old’ classification does. See section 2.4. for definition of regions and Table S1 for more detailed information on distribution. The tree is from analysis C-ML-6 (Fig. 1). Both the ‘old’ classification of Blattidae and the revised classification introduced in the present paper are shown.