Final diagnosis


Thrips

Numerous irregular and necrotic lesions are visible on this portion of the leaf.  (<b> thrips </b>)
Thrips and several whitish necrotic lesions are visible on this cucumber flower.  <i> <b> Frankliniella occidentalis </b> </i>
Adult California Thrips : <b><i>Frankliniela occidentalis</i></b>.
 <b>Thrips</b> larvae