Ps ciliata is known for which distinguishing feature?

The distinguishing feature of Ps ciliata, commonly known as the common brown horsefly or something similar depending on the specific classification, is its large size with yellow markings. This characteristic makes it easily recognizable among other species within its family. The large size allows it to stand out, while the yellow markings provide a contrast that can be useful for identification in the field.

While there are other features that might be present in the general family of horseflies, such as specific spots on wings or coloration, these are not unique to Ps ciliata. This species is particularly notable for its prominence in size and its specific coloration patterns, which help to differentiate it from other similar insects. The emphasis on size and the key characteristic of yellow markings highlights the importance of visual identification in entomology and public health practices related to vector control.