Mexican Red-Rump Tarantula #3 Brachypelma vagans Home     Spiders    Details Brachypelma Vagans #3- 9 October 2018    Photo Details - ©Nicky Davis Received in an exchange with TJ Rowsell September 2018.  He said these were about 3 months old at that time. Females will get to 6 inches and males about 5 inches and will look "leggy" 75 °- 80° will work well. Humidity 65-80 Males can reach maturity in 18 months and females may take 24 months Feed every three days for rapid growth or once a week