1. 触角：[触角] (antenna) 除少数昆虫外,绝大多数种类均生有触角,其通常着生在额区,为重要感觉器官. 触角长度一般为体长的1/4~1/2,形状因不同的昆虫种类而异. 有棒状、刚毛状、锯齿状、念珠状、鳃片状、丝状、双栉状、线状、羽状、肘状等类型.

2. 大触角：第二对触角也名大触角(antenna),原肢只见2肢节,内肢演变成一条长鞭,上生多数触毛. 外肢不分节,扁平呈鳞片状,可能对动物在水中的升降有关. 2对触角的长鞭均能向四面八方摆动借以获得水中较大范围内的外界信息. 3对口肢是摄食的主要器官,

3. antenna：ant; 天线

noun

1. one of a pair of mobile appendages on the head of e.g. insects and crustaceans
typically sensitive to touch and taste

Synonym: feeler

2. an electrical device that sends or receives radio or television signals

Synonym: aerialtransmitting aerial

3. sensitivity similar to that of a receptor organ

e.g. he had a special antenna for public relations

Synonym: feeler