Figure 8

Schematic overview of muscle development in the posterior germ band, posterior pleon- and telson anlagen. Summary of results presented in Figure 6. a Gonodactylaceus falcatus, b Neocaridina heteropoda, c Procambarus fallax f. virginalis, d Neomysis integer, e Parhyale hawaiensis. For G. falcatus the late embryonic stages are unknown. The specified semaphoronts (roman numbers) are presented as simplified drawings. Only hemisegments of the right body half are shown. Anterior is oriented to the top in all panels. lmp and lmp-d are shown as continuous lines and color coded (pink and purple respectively). The posterior pioneer muscle strand lmp-post is treated as a single unit though it cannot be precisely delineated from lmp. The mesoteloblasts and mesodermal cells are shown as circles with colors alternating yellow and white in a-p direction. Only one of four mesoteloblast cells is shown (yellow). Units of the trunk mesoderm, in which cell proliferation has progressed beyond the stereotypic pattern of mesodermal cell rows, are shown in the same color code. Abbreviations: Gf (I-IV), Nh (I-V), Pf (I-IV), Ni (I-V), Ph (I-V) (species- and semaphoront affiliation); FS (developmental event: full set of segment anlagen present), T telson anlage, m mesoteloblast.