Parasitic insects

Works from the collections

2 works

Pictures
The plague of lice (or maggots) Wood engraving by Hermann Fechenbach, ca. 1930.
Hermann FechenbachDate: [1930?]Reference: 525613i
Books
The insect parasites of the Chrysopidae (Neuroptera) / by Donald W. Clancy.
Clancy, Donald W. (Donald Washburn), 1909-Date: 1946