The tiny black spots on the tissue are eggs, which will hatch into silkworms (shown munching on a mulberry leaf) in about three to ten days. After 30 days of grazing, these critters will encase themselves in robes of silk, producing cocoons a little larger than a quarter. Silkworm farmers may kill the fat, brown pupa (on the paper towel) that inhabits the cocoon, or allow the chrysalid to hatch into the silkworm moth (again, perched on the leaf). Such adults will soon mate, reproduce, and die ... thereby completing their life cycle (the entirety of which is shown in this photo!).
CLYDE E. WITT