- Diptera
- Simuliidae
- Fan-like mouth brushes
- Abdomen is swollen posterior (bent bowling pin
shape)
- Pro-thorax has median pro-leg ventrally
- Posterior end of abdomen contains ring of small
hooks
- Tabanidae
- Linear body that tapers at both ends
- Head partially retracted
- abdominal segments 1-7 have small protrusions that
form encircling rings
- Tipulidae
- head partially retracted
- contains spiracle disk at posterior section of
abdomen that are surrounded by lobes, possibly with hairs
- Nymphomyiidae
- eight pairs of slender prolegs with comb-like spines
- head showing a distinct separation from the thorax