spot sensillum of dorso-lateral group Pit sensillum located in the dorso-lateral group of the terminal organ, on the head of the embryo/larva, located next to the dorsolateral papilla. It resembles a small pit, and houses a single dendrite that has a tubular body, indicative of mechanosensation (Rist and Thum, 2017). The bipolar neuron that innervates this sensillum has its cell body in the terminal organ ganglion. spot sensillum of dlp FBbt:00002681 spot sensillum of dorsolateral group pit sensillum of dlp VFB:FBbt_00002681 Sdo fly_anatomy.ontology dorso-lateral group terminal organ sensillum spot sensillum