Eggs and embryo of Diplatys flavicollis (Diplatyidae) in Stage 4. A–A’’’ Egg, DAPI staining, UV-excitation, fluorescence microscopy. A Lateral view, anterior to the top, ventral to the left. A’ Ventral view, anterior to the top. A’’ Posterior view. A’’’ Dorsal view, anterior to the top. B, B’ Sagittal section of an egg, showing the formation of amnioserosal fold, anterior to the top, ventral to the left. The formation of the amnioserosal fold progresses toward the posterior. Black and white arrowheads represent the fronts of the anterior and posterior amnioserosal folds, respectively. B’ Enlarged image of the boxed area in B. – Abbreviations: Ab – abdominal region; Am – amnion; AmSeF – amnioserosal fold; ASt – adhesive stalk; Ch – chorion; HL – head lobe; IcS – intercalary segment; MdS – mandibular segment; Me – mesoderm; MxS – maxillary segment; Se – serosa; SYN – secondary yolk nucleus; Th – thoracic region. – Symbols: black arrowhead – front of anterior amnioserosal fold in extension; white arrowhead – front of posterior amnioserosal fold. – Scale bars: A–A’’’ – 500 μm; B – 100 μm; B’ – 50 μm.

 
 
  Part of: Shimizu S, Machida R (2024) Development and reproductive biology of Dermaptera: a comparative study of thirteen species from eight families. Arthropod Systematics & Phylogeny 82: 35-75. https://doi.org/10.3897/asp.82.e96452