Chile Fire Rose wants to distinguish male and female, it is actually very simple. Generally, when the Chilean fire rose becomes an adult, the male Chilean fire rose will grow the genitals unique to male spiders on the pair of shortest tentacles at the front end, that is, there will be a small protrusion on the tibia of the first pair of feet.

The female Chilean fire rose has no such genitals, but If you turn it over and look at it, there will be a piece of skin protruding from the lower end of the thoracic-abdominal junction.