attached to coxa extracoxal trochanter depressor muscle prothoracic depressor muscle prothoracic extracoxal trochanter depressor muscle 34 2022-07-05T13:30:44Z FBbt:00058867 fly_anatomy.ontology prothoracic extracoxal trochanter extensor muscle Adult prothoracic muscle that depresses (extends) the trochanter and has its origin outside of the coxa (Miller, 1950; Azevedo et al., 2024). There are two of these on each side, one that originates on the tergum and one that originates on the sternum (Azevedo et al., 2024). Its fibers insert on the prothoracic trochanter extensor (extracoxal trochanter depressor) tendon (Azevedo et al., 2024).