ROLL CALL: HOUSTON MOSQUITO CONTROL SPIDER FORCE The Yellow and Black Garden Spider, proud builders of those zig-zaggy webs, “preys upon Houston’s least-favorite insects, including wasps and mosquitoes, but are completely harmless to humans. Its cousin, the Spiny-Backed Orb Weaver . . . is also a dutiful and helpful one-spider pest-control squad, and is even more recognizable.” [Houstonist]