Fig. 4

Diffraction patterns from the flight muscles of other dipteran species. a Phytomia zonata (hover fly); b Promachus yesonicus (robber fly); c Tipula coquilletti (crane fly) and d Bibio sp. (march fly). Green arrowheads indicate peaks indexable to the thick-filament superlattice with a greater lattice constant. Blue arrowheads indicate that the intensity of the 1st myosin meridional reflection (at d = 14.5 nm) is weak on the meridian. The pattern in (a) was recorded in the relaxed state, and the others were recorded in the rigor state, in which the 1st myosin meridional reflection is weakened