part of develops from bulb VFB:FBbt_00003682 mimpr https://cdn.ncbi.nlm.nih.gov/pmc/blobs/acda/10213501/ccb19d89b056/iyad064f6.jpg Lat Tri IST BU lateral triangle fly_anatomy.ontology FBbt:00003682 A bilaterally paired synaptic neuropil domain located lateral to the ellipsoid body and anterior lateral to the fan-shaped body. It contains 80 microglomeruli characterized by their granular texture. It is formed primarily by the collateral arborizations of neuronal fibers that project to the ellipsoid body and by the terminals of the fibers projecting from the anterior optic tubercle and other neuropils. ltr The bulb corresponds to the medial part of the mimpr of Otsuna and Ito, (2006) and to the lateral triangle of Chiang et al. (2011) (Ito et al., 2014). isthmus lateral complex synaptic neuropil domain bulb primordium