only in taxon only_in_taxon in taxon embryonic development via the syncytial blastoderm The process whose specific outcome is the progression of the embryo over time, from zygote formation through syncytial blastoderm to the hatching of the first instar larva. An example of this process is found in Drosophila melanogaster. biological_process GO:0001700 embryo development ending in birth or egg hatching Insecta