Sentence:  The "Spanish" fly abounds in the south of France, Spain, and Italy, and is found on the ash, lilac, privet, elder, honeysuckle, plum, willow, and elm trees....The "American" fly is rather smaller than the <WSD>Spanish fly</WSD>, and of a much darker color. 
Meaning of the word marked with <WSD> tags:  The beetle "Lytta vesicatoria".