類別

昆蟲與蜘蛛（昆蟲）

參賽者

陳鴻生

作品名稱

好像少了兩隻？ Are There Two Missing?

科學圖說 Scientific introduction

黃斑椿象是平地常見的一種椿象，拍攝過程中，常發現有平腹小蜂（寄生蜂）在卵上寄生，就知道這一窩無法孵化了。白色卵鞘蓋上的黑色三角物體，是黃斑椿象若蟲自備的孵化破卵器，若蟲用此破卵器打開卵蓋，孵化後將它遺留在卵蓋邊，也有可能掉入卵殼內。照片中一共有12個卵，去掉2個孵化失敗的，共有10隻幼蟲。黃斑椿象雌蟲在產卵時，經常以12個卵為一組，至於為何如此？會是有趣的研究主題。

The tallow stink bug is a common species in flatlands. While photographing, I saw the egg parasitoid wasp (Anastatus japonicus), and I knew that the entire clutch would not be able to hatch. The black triangle egg-buster on the egg capsule functions as the opener. The hatching nymphs use it to open the operculum. After they hatch it is left in the operculum or drops into the egg capsule. In this image, there are 12 eggs. Two failed to hatch, which means that there are 10 nymphs. The tallow stink bug usually lays 12 eggs per clutch. The reason behind that is an interesting question for further research.