pine wilt nematode

                                                                            Author S.E. Thorpe

Image:  A Xylophilus female Beetle  (here)

X for Xylophilus female beetle

Note: The xylophilus, commonly known as 
pine wood nematode or pine wilt nematode 
(PWN), is a species of nematode that infects 

pine trees and causes the disease pine wilt.

While native to North America, it spread in the early 20th century 

to Japan and in the latter half of the century to other areas of Asia,

including China, Taiwan and Korea, as well as to Europe, 

including Portugal and Spain.  -  Wiki

A to Z April Challenge  - X

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