Borkenkäfer, Holzstiche, erschienen 1893 - Stock-Grafiken

Bark beetles: 1) Fir bark beetle (Pityophthorus pityographus, or Bostrichus typographus), a-natural size, b-larva (natural size and magnified), c-pupa; 2) European elm bark beetle (Scolytus scolytus), d-larva (natural size and magnified), e-pupa (magnified). Right: European elm bark beetle (Scolytus scolytus, or Eccoptogaster scolytus), galleries and larvae. Explanations in German. Wood engravings, published in 1893.