(all cleared specimens). (a) Vesperoctenus flohri, female, hind coxae, ventral view; (b) V. flohri, female, metendosternite, dorsal and slightly anterior view (tip of right arm missing); (c) Vesperus strepens, female, hind coxae, ventral view; (d) V. strepens, female, metendosternite, dorsal view; (e) Mantitheus pekinensis, female, hind coxae, ventral view; (f) M. pekinensis, female, metendosternite, dorsal view (tip of left arm missing). Lettering: arm – metendosternal arm; at – anterior tendon; lam – metendosternal lamina; st – basal stem (missing in females of Vesperoctenus and Vesperus).