Spiders (image) Pensoft Publishers Share Print E-Mail Caption This is a comparison of the largest and the smallest tarantula species in the United States. These are adult females of Aphonopelma anax (L) from Texas and Aphonopelma paloma (R) from Arizona. Credit Dr. Brent Hendrixson (A. anax) and Dr. Chris A. Hamilton (A. paloma) Usage Restrictions CC-BY 4.0 Share Print E-Mail 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.