Identify families
Adult Males
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- Left cercus with terminal segment normal, clearly delimited by a membranous joint, basal segment often inwardly lobed but never echinulate; hind basitarsus with only 1 (terminal) ventral papilla Oligotomidae
- Left cercus with terminal segment partially or entirely combined with basal segment, the composite segment with one or more echinulate inner areas or lobes; hind basitarsus usually with 2 ventral papillae 2
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- Usually winged; if apterous, basal segment of right cercus elongate and similar to the terminal segment; S9 of abdomen (hypandrium) continuously produced caudally as a subgenital lobe (HP) Notoligotomidae
- Always apterous; basal segment of right cercus very short, hemispherical; S9 with caudal margin transverse, and with a nearly completely detached, large, triangular sclerite (HP?) on its right caudal half Australembiidae
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