 Dentary sclerites located next to the mandible are pointed down, and are lightly pigmented towards the back of the fly.Small sclerites are present between the mandibular ones, and an additional sclerite is found on the posterior end near the hypostome (a structure found near the mouth which allows an animal to anchor itself firmly on another to suck, as in the tick's hypostome).The third instar stage is 4.10–9.42 mm long and 0.76–2.13 mm wide.