attached to part of adult abdominal tergite integumentary compartment a1 adult abdominal tergite integumentary compartment a2 adult somatic muscle of abdomen abdominal dorsal muscle 2022-07-05T13:30:44Z fly_anatomy.ontology FBbt:00058979 Muscle consisting of between fifteen and twenty-five bilaterally located longitudinal fibers in abdominal segments 2 to 6 of males, or segments 2 to 8 of females (Miller, 1950). It is involved in moving the abdominal segment tergite. It is attached to the a2 compartment of the tergite anteriorly and the a1 compartment of the next segment posteriorly (Krzemien et al., 2012).