This juvenile widow spider (Latrodectus hesperus) has set up a web over the opening of a harvester ant nest (Pogonomyrmex occidentalis). Hallelujah Junction, California, USA

Black widowwidow spiderpoisonous spiderspider eatingLatrodectusarachnidsarachnidbiologypredationspider webecologyharvester antsdesert ecologypredatorsspiderweb