part of attached to larval abdominal apodeme embryonic/larval intrasegmental apodeme embryonic/larval A1-7 intrasegmental apodeme 2 ina2 FBbt:00001028 Posterior-most of the two intrasegmental apodemes located in each embryonic/larval abdominal segment. It is the insertion site for A1-7 ventral acute muscle 3 (also known as vs1). fly_anatomy.ontology larval abdominal segment A1-7 ventral acute muscle 3