hmmmm they sound like ' THRIPS ' according to something i just read on the internet...
'Thrips: Thrips are small (about 1/16 inch long) and slender insects. They live in flowers, on tender leaves and leaflets, feeding on the sap. One part of the thrips’ mouth acts like a rasp and tears the surface of the plant, exposing the contents. The fluid is then sucked up through another part of the mouth. The adults range in color from yellow to black, while the immature wingless nymphs are light in color. Their feeding usually causes leaf-curl (leaves curl in an upward fashion) or some type of distortion.
Preferred method of control: spray them with warm, slight soapy water. When dry dust the plants with diatomaceous earth.'
that would be one explanation of the curl up on my leaves...