Teskeyellus cyanommatus is a species of horsefly in the family Tabanidae discovered in Manaus, Brazil in 2017.
The fly's abdomen and thorax are completely covered in bright yellow and black striped fur, imitative of a sand wasp, and females are thought to not require blood meals to reproduce, unlike most tabanids. Little is known so far about its ecology and habitat, but it likely has a wider range in the Amazon Basin.[1]