- Oct 6, 2016
Ventral sexing, as I am to understand it, works like this: a female's first set of book lungs are farther apart than a male's, which are almost touching. This technique is infamously unreliable because every tarantula has a slighty different body, so it's usually just better to use a molt. But here's my theory: it could be good, IF you are using it on a big group of tarantulas. If you ventrally sex a big group, then the one with the farthest apart book lungs is almost certainly female. And the ones with the closest lungs are almost certainly male. I would liken it to how men tend to be taller than women, even though there are exceptions. But over a large group of people, the men will have a taller average height. So what are y'all's thoughts?