Fig. 1From: Redefining the extinct orders Miomoptera and Hypoperlida as stem acercarian insectsMiomoptera including problematic taxa previously assigned. a, b, Palaeomantis aestiva (Novokshonov, 2000), photograph of holotype PIN No. 1700–4093 (Early Permian, Tshekarda, Russia); c, Perunopterum peruni Kukalová, 1963, photograph of holotype UK No. 140/1962 (Early Permian, Obora, Czech Republic); d, Delopterum rasnitsyni Novokshonov, 2000, photograph of holotype PIN No. 1700–4094 (Early Permian, Tshekarda, Russia); (e, g-i) Delopsocus latus (Sellards, 1909) photographs and microphotographs of holotype YPM IP 005384 (Early Permian, Elmo, U.S.A.); (f) Perunopterum peruni Kukalová, 1963, photograph of specimen UK No. 116/1962 (Early Permian, Obora, Czech Republic), (scale bars represent a-d = 2 mm; e-h = 1 mm; i = 200 μm). Abbreviations: ce – cerci, cf – claval furrow, gs – gonostyli, sm – sockets of macrotrichiaBack to article page