Middle English probably from Old Norse depillspot, splashdiminutive ofdapipool
The wings in Culex have not the same dappled appearance.
The wings in nearly all species have a dappled or speckled appearance, owing to the occurrence of blotches on the front margin and to the arrangement of the scales covering the veins in alternating light and dark patches (Austen).
While they drove past the garden the shadows of the bare trees often fell across the road and hid the brilliant moonlight, but as soon as they were past the fence, the snowy plain bathed in moonlight and motionless spread out before them glittering like diamonds and dappled with bluish shadows.
Though existing horses are usually not marked in any definite manner, or only irregularly dappled, or spotted with light surrounded by a darker ring, many examples are met with showing a dark median dorsal streak like that found in all the other members of the genus, and even with dark stripes on the shoulders and legs.
While they can tolerate a bit of dappled shade, the more light they get the healthier they'll be.