The U.S. attorney's office says those now in custody include an alleged high-ranking leader of a faction of that gang.
U.S. Attorney Patrick Fitzgerald told reporters that Wednesday's arrests won't by themselves collapse the entrenched network of gangs in Chicago. But he says it's a step toward bringing down what he described as one of many separate pyramid organizations.
Officials say most of the suspects face federal cocaine and marijuana charges.
A list of the federal defendants (with best known ages and last known residences) and their charged roles in the complaint follows:
Count One: conspiracy to distribute more than 500 grams of cocaine, Jan 11-14, 2010
Francisco Masias, aka "Swoll" and "Cisco," 31, of Berwyn
Jose Maldonado, aka "Spook," 32, of Chicago
Teodoro Gorostieta, 23, unknown
Carlos Hernandez Ramirez, aka "Jesse Martinez" and "Jesse," 51, of Chicago
Count Two: possession with intent to distribute more than 500 grams of cocaine, May 20, 2010
Randy Ramirez, 31, of Chicago
Juan Maldonado, 19, unknown
Ruben Tello, 21, of Chicago
Count Three: possession with intent to distribute more than 500 grams of cocaine, June 19, 2010
Francisco Montemayor, aka "Kiko," 29, of Cicero
Count Four: possession with intent to distribute cocaine, Feb. 1, 2010
Edwin Rodriguez, 24, of Riverside
Denise Aceves, 22, of Riverside
Count Five: possession with intent to distribute cocaine, Jan. 16, 2010
Jorge Covarrubias, 31, of Chicago
Count Six: possession with intent to distribute more than 500 grams of cocaine, April 21, 2010
Jose Garcia, aka "Beast," 40, of Chicago
Count Seven: conspiracy to distribute more than 500 grams of cocaine, Dec. 7, 2009 - Jan. 14, 2010
Michael Vaca, aka "Mikey," 31, of Chicago
Steven Dragon, 30, of Comstock Park, Mich.
Count Eight: manufacturing more than 100 marijuana plants, April - June 30,2010
Jason Herrera, aka "J," 29, of Berwyn
Efrain Diaz aka "Fro," 31, of Chicago
Andrew Vela, aka "Drew," 29,of Berwyn and Newark, Ill.
Adrian Bernal,aka "T," 27, of Chicago
Shaun Dodson, 28, of Burbank
The Associated Press contributed to this report.