dc:creator"Godunko, Roman J.; Martynov, Alexander V.; Staniczek, Arnold H.";
dc:date"2021";
dc:title"First fossil record of the mayfly family Vietnamellidae (Insecta, Ephemeroptera) from Burmese Amber confirms its Oriental origin and gives new insights into its evolution";
dc:description"Figure 1. Burmella paucivenosa sp. nov., male imago, holotype, general lateral view A left side of body B right side of body. Scale bars: 2 mm.";
dc:description"Figure 2. Burmella paucivenosa sp. nov., male imago, holotype A head, right lateral view B compound eye, left lateral view C head and thorax, left lateral view D mesothorax, left lateral view. Blue line - border between portions of compound eye, da - damaged area, lp - lower portion, LPs and red line - lateroparapsidal suture, MNs and green line - mesonotal suture, MPs and yellow line - medioparapsidal suture, up - upper portion. Scale bars: 0.5 mm (A, C); 0.2 mm (B, D).";
dc:description"Figure 3. Burmella paucivenosa sp. nov., male imago, holotype A, B tarsus of right middle leg C right middle leg D left hind leg. I-V - tarsal segments, pts - patellotibial suture. Scale bars: 0.1 mm (A, B); 0.5 mm (C); 0.2 mm (D).";
dc:description"Figure 4. Burmella paucivenosa sp. nov., male imago, holotype A right and left wings position in amber B right forewing venation and size ratio of fore and hind wings. Scale bars: 1 mm.";
dc:description"Figure 5. Burmella paucivenosa sp. nov., male imago, holotype A right hind wing in amber B right hind wing venation. Scale bars: 0.2 mm.";
dc:description"Figure 6. Burmella paucivenosa sp. nov., male imago, holotype A abdomen, left lateral view B abdominal segments III-VII, lateral view C, D genitalia, ventrolateral view. III-VII - numbers of segments, white arrows mark remnants of gill sockets, pink area - penis lobes, light blue area - gonobasis (styliger plate), brown area styliger segment I, yellow area - styliger segment II, light green area - styliger segment III, purple area - styliger segment IV. Scale bars: 1 mm (A); 0.5 mm (B); 0.2 mm (C, D).";
dc:description"Figure 7. Burmella clypeata sp. nov., female imago, holotype A general dorsal view B general ventral view C, D head, dorsal view E head and thorax, dorsal view. BA - basal sclerite (basalare), LPs and red line - lateroparapsidal suture, MNs and green line - mesonotal suture, MPs and yellow line - medioparapsidal suture, rc - right cercus. Scale bars: 2 mm (A, B); 0.2 mm (C, D); 0.5 mm (E).";
dc:description"Figure 8. Burmella clypeata sp. nov., female imago, holotype A tarsus of left hind leg B tarsus of right hind leg C left forewing in amber D left forewing venation and size ratio of left fore- and right hind wings E distal part of left forewing F preserved basal part of right forewing. I-V - tarsal segments, ci - basally connected intercalary vein, fi - basally free intercalary vein. Scale bars: 0.1 mm (A, B); 1 mm (C, D); 0.5 mm (E, F).";
dc:description"Figure 9. Burmella clypeata sp. nov., female imago, holotype A right hind wing, dorsal view B right hind wing, ventral view C right hind wing venation. Scale bars: 0.2 mm (A, B); 0.5 mm (C).";
dc:description"Figure 10. Burmella clypeata sp. nov., female imago, holotype A body, ventral view B, C apical part of abdomen, ventral view D basal segments of abdomen, dorsal view. I-III and V-IX - numbers of abdominal segments, gsr - remnant of gill socket, pp - paraproct plate. Scale bars: 1 mm (A); 0.5 mm (B-D).";
