Spiders (IMAGE) Pensoft Publishers Caption This is a comparison of the largest and the smallest tarantula species in the United States. These are adult females of <i>Aphonopelma anax</i> (L) from Texas and <i>Aphonopelma paloma</i> (R) from Arizona. Credit Dr. Brent Hendrixson (A. anax) and Dr. Chris A. Hamilton (A. paloma) Usage Restrictions CC-BY 4.0 License Licensed content Disclaimer: AAAS and EurekAlert! are not responsible for the accuracy of news releases posted to EurekAlert! by contributing institutions or for the use of any information through the EurekAlert system.