虾蛄与虾同属一大家族,在动物分类上隶属于节肢动物门、甲壳纲,但在形态结构上与虾有很大的差异,是一类比较特殊的甲壳动物。虾蛄的身躯分为头胸部和腹部。具头胸甲,但较短小,最后4个胸节露在头胸甲外面能自由活动。头胸甲前缘中央有一片能活动的额角,呈方形、心形或延长成棘状等。额角前方有两个能活动的体节,分别称为眼节和触角节,附着眼和第一触角,这是虾蛄与 Shrimp shrimp and shrimp belong to the same family, belonging to arthropod door, crustacea in the animal classification, but in the morphological structure and shrimp are very different, is a relatively special type of crustacean. Mantis shrimp body is divided into head and chest and abdomen. Breasted breastplate, but shorter, the last four chest exposed outside the breastplate can move freely. Forehead breast carapace center has an active forehead, was square, heart-shaped or extended into spine and so on. There are two movable body segments in front of the forehead, which are respectively referred to as eye joints and antennal nodes, attaching the eyes and the first antennae,