These are sizable, venomous, mottled brown spiders about the size of a small rat. After a strong downpour, these spiders are often forced onto street level by flooding, boiling up from the drains in great swarms and thus justifying their common name.
CR 1/6 (XP 65)
AC 21, touch 21, flat-footed 14 (+7 dex, +4 size)
hp 2 (1d8-2)
Fort +0, Ref +7, Will +0
Immune mind-affecting effects
Str 1, Dex 25, Con 6, Int —, Wis 10, Cha 2
Base Atk +4; CMB +3; CMD 8
Skills Climb +19, Perception +4 (+8 in webs), Stealth +23 (+27 in webs); Racial Modifiers +4 Perception, +4 Stealth (+8 in webs), +16 Climb
Bite—injury; save Fort DC 10; frequency 1/round for 4 rounds; effect 1d2 Strength damage; cure 1 save.
Organization solitary, pair, or colony (3–8)
Pathfinder Campaign Setting: The Inner Sea World Guide. © 2011, Paizo Publishing, LLC; Authors: Keith Baker, Wolfgang Baur, Clinton J. Boomer, Jason Bulmahn, Joshua J. Frost, Ed Greenwood, Stephen S. Greer, Jeff Grubb, James Jacobs, Michael Kortes, Tito Leati, Mike McArtor, Rob McCreary, Erik Mona, Jason Eric Nelson, Jeff Quick, Sean K Reynolds, F. Wesley Schneider, Leandra Christine Schneider, David Schwartz, Amber E. Scott, Stan!, Owen K.C. Stephens, Todd Stewart, James L. Sutter, Greg A. Vaughan, Jeremy Walker, and JD Wiker.