What month is the wild oil gourd called?

65438+ opened in February. Water hyacinth is a popular traditional singing insect in winter (65438+February-February). The difference between it and cricket is that its belly is black, so Beijingers also call it (black bug). However, the overall shape of water hyacinth is very similar to that of cricket, and it is also black (golden yellow is rare). It has two long beards on its shiny head and two tails on its tail, but it is bigger than a cricket.