Yes the signs do indicate an infestation of Azalea Lace Bug.

The best protocol is to monitor your plants weekly in the spring, summer and fall for the presence of lace bugs.  Control can include:  maintaining healthy plants by proper watering and fertilization (however too much nitrogen increases attractiveness to azalea lace bugs) will reduce plant stress which lessens the likely hood of damage by the lace bugs.  A strong jet of water from your garden hose directed to the undersides of the leaves will dislodge the bugs and possibly kill the nymphs.  Follow up with insecticidal soap, or horticultural oil, or neem oil or a synthetic insecticide.  It is important to direct the spray, for the best results, to the undersides of the leaves when applying one of these products.  Other chemical options include contact insecticides or those that have a systemic activity through the plant, however, these chemicals may be detrimental to beneficial insects including honey bees and bumblebees.

When using any type of chemical control read the label and follow the directions for application and disposal.

Thank you for your question.