First Report of <i>Geosmithia morbida</i> and <i>Pityophthorus juglandis</i> Causing Thousand Cankers Disease in Butternut

Fig. 3. Larvae of the walnut twig beetle (Pityophthorus juglandis) feeding in the cambium.



Image from Plant Health Progress article:
First Report of Geosmithia morbida and Pityophthorus juglandis Causing Thousand Cankers Disease in Butternut