一个英文句子求解A cousin of the tenacious Asian longhorned beetle—which since its initial discovery in 1996 in New Yourk City has caused tens of millions of dollars in damage annually—the citrus longhorned beetle was discovered on a juniper bush in August 2001 in Tukwila,Washington.求好心人回答一下."which since its initial discovery in.in damage annually"这一整句话是修饰Asian longhorned beetle,还是修饰citrus longhorned beetle(也就是Asian longhorned beetle的cousin),为什么.感激不尽!

一个英文句子求解
A cousin of the tenacious Asian longhorned beetle—which since its initial discovery in 1996 in New Yourk City has caused tens of millions of dollars in damage annually—the citrus longhorned beetle was discovered on a juniper bush in August 2001 in Tukwila,Washington.
求好心人回答一下.
"which since its initial discovery in.in damage annually"这一整句话是修饰Asian longhorned beetle,还是修饰citrus longhorned beetle(也就是Asian longhorned beetle的cousin),为什么.
感激不尽!