國外的昆蟲網站上大致都會提到: Little is currently known about the biology of Macrodontia cervicornis. Most of this species’ life is spent in the larval stage, which can last for up to 10 years.
因為很難在野外或實驗室內花10年時間觀察紀錄某隻幼蟲的成長周期,在下猜想或許是從野外採集紀錄中得到這樣的說法。事實上某位國外資深蟲友曾提到: I've been following Macrodontia cervicornis for many years. In the past, I would say a 170+ mm beast shows up every 8 years or so.(http://insectnet.proboards.com/thread/5857/macrodontia-cervicornis#ixzz4jSwQqusv)