- Feb 13, 2006
Hooks and palpal bulbs only appear on mature males, meaning when they've had their ultimate molt. Up until then, pre-ultimate male tarantulas can look just like a juvenile/sub-adult female tarantula. Some have said that pre-ultimate males look "leggier" than females, but that isn't any sort of guarantee. Ultimately, the best way to discern pre-ultimate male from female is via exuvium.It seems like this would be a much easier sure fire way to tell a male from a female.
Are there species that don't have tibial hooks on the males? Are there females that might have weird legs that have hook like parts? It just seems that most ppl prefer to ventrally sex or check out molts to tell. I would think hooks were the way to go every time.