Embryonic development of Diplatys flavicollis (Diplatyidae), DAPI staining, UV-excitation, fluorescence microscopy. Lateral view, anterior to the top, ventral to the left. A Stage 1. B Stage 2. C Early Stage 3. D Early-middle Stage 3. E Middle-late Stage 3. F Late Stage 3. G Stage 4. H Early Stage 5. I Late Stage 5. J Early Stage 6. K Middle Stage 6. L Late Stage 6. M Early Stage 7. N Middle Stage 7. O Late Stage 7. P Early Stage 8. Q Middle Stage 8. R Late Stage 8. S Stage 9. – Abbreviations: Ab – abdominal region / abdomen; Am – amnion; An – antenna; Bd – blastoderm; CE – compound eye; Ce – cercus; Cllr – clypeolabrum; CN – cleavage nucleus; DDC – definitive dorsal closure; EA – embryonic area; EEA – extraembryonic area; Em – embryo; Gn – gnathal region; HC – head capsule; HL – head lobe; Lb – labium; LbP – labial palp; LP – lateral plate; Md – mandible; Mx – maxilla; MxP – maxillary palp; Pce – protocephalon; Pco – protocorm; PDC – provisional dorsal closure; SDO – secondary dorsal organ; Se – serosa; SYN – secondary yolk nucleus; Th – thoracic region / thorax; Th2 – 2nd thoracic segment; Th1L–3L – 1st to 3rd thoracic legs; I–XI – 1st to 11th abdominal segments. – Symbols: black arrowhead – anterior end of the embryo; white arrowhead – posterior end of the embryo. – Scale bar: 500 μm.