part of develops from capable of larval ocular segment sense organ photoreceptor late embryo Bolwig organ VFB:FBbt_00005805 larval Bolwig's organ embryonic Bolwig's organ Bolwig's organ UBERON:6005805 dorsocaudal pharyngeal sense organ fly_anatomy.ontology FBbt:00002643 embryonic visual system Location in ocular segment on basis of FBrf0075072. FBbt:00005805 FBbt:00015250 stemmata organ Visual organ of the larva that is anchored to the basal surface of the thin epithelium of the dorsal pouch, lateral to the musculature of the pharynx (Green et al., 1993; Hartenstein et al., 2019). It consists of a dense cluster of approximately 12 photoreceptor neurons and no support cells (Green et al., 1993; Hartenstein et al., 2019). It is connected to the brain via the Bolwig nerve (Green et al., 1993). larval eye FBbt:00005742 Bolwig organ primordium internal sensillum embryonic/larval head sensillum anterior ectoderm derivative detection of light stimulus involved in visual perception