A distinctive feature is the position assumed in resting; Culex has a humpbacked attitude, while in Anopheles the proboscis, head and body are in a straight line, and in many species inclined at an angle to the wall, the tail sticking outwards.
Vertebrate host, Athene noctua, Little Owl; invertebrate host, Culex pipiens.
In the female of Culex the palpi are much shorter than the proboscis; in Anopheles they are of the same length.
Schaudinn had fully described the relations of certain avian Trypanosomes to their invertebrate host, Culex pipiens (females).
Their alternate hosts are mosquitoes of the Culex genus.
The wings in Culex have not the same dappled appearance.