The tiny hemipterans are nymphs of a lacebug, family Tingidae. The image with multiple individuals is a collection of
shed exoskeletons left behind after molting:- (lace bug exuvia. [ex·u·vi·ae] Pronunciation [ig-zoo-vee-ee, ik-soo-]
– plural noun the cast skins, shells, or other coverings of animals.) Many insects have synchronous molts like this.
Lacebugs produce brown to black tar spots of excrement that is readily apparent on the undersides of the leaves.

If they are observed on birch, they're either Corythucha heidemanni or Corythucha pallipes.

Lacebugs belong to the insect order Hemiptera, or "true bugs," and all species are grouped in the Hemipteran family, Tingidae.
Their common name comes from the lacy-like venation of the broad, flat, whitish colored forewings that cover most of the insects body.
As with all Hemipterans, lace bugs feed using sucking mouthparts. Most lace bugs feed on the underside of leaves, but symptoms
appear on the upper leaf surface. Damage symptoms first appear as small yellow spots, or stippling. The spots may coalesce cause
leaves to become bronze colored, which superficially resembles spider mite feeding damage.

Many thanks to Laura Miller (a leading authority on lacebugs), Eric Eaton from Bug Guide, and Daniel Marlos
from What's That Bug for all all their assistance in the proper identification and information above, of these insects.
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Measurements from Precision 7X Magnifier with Measuring Plate.
Large Bug: .075 long x .050 wide (1.9mm x 1.27mm)
Small Bug: .050 long x .025 wide (1.27mm x .635mm)


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