你是指毒液吗？我在一本书上看过一个毒液能杀死军蚁的蚂蚁 貌似不叫巨针蚁

锯针蚁？

怎么没资料？搜索的第一个就是http://www.baidu.com/s?wd=%E5%B7%A8%E9%92%88%E8%9A%81&rsp=0&f=1&oq=%E5%B7%A8%E9%92%88%E8%9A%81dinoponera&ie=utf-8&rsv_ers=xe0&rs_src=0

Dinoponera gigantea
Dinoponera gigantea is one of the world's largest species of ant.[2] It is found only in South America. The females of the species are larger than males, with lengths ranging from 3 to 4 centimetres (1.2 to 1.6 in). [3] The females are coal-black in color, while the much smaller males are dark red.Contents from wiki

Dinoponera gigantea恐龙蚁猎食蛙类.矛蚁行军蚁大小?

听上去很像非洲行军蚂蚁

我觉得你说的应该是 子弹蚁， 被蛰到后会有被子弹打中的疼痛感。
http://baike.baidu.com/view/1639613.htm

有本漫画叫蜘蛛arachnid 里面对昆虫知识描写的很详细、 你可以去看看

九台以前播过

是不是猛蚁

你看看我空间里的妈是是不是剧针蚂蚁

图为马塔贝勒蚁