In the springtime you will see spiders showing up in all kinds of places while they set the table for their summer reproductive season. As the weather warms up, the spiders start looking for ant trails to set up housekeeping. The first step to long term spider management is to eliminate the ants. That’s right, ants! You see, the primary food source for the early stages of development for most spiders is the ever present ant and the occasional tasty gnat or drain fly. From that, they graduate to larger bugs with each stage of their development. Of course spiders also eat each other so, without a ready supply of ants, spiders will end up reducing their own population, often by more than ninety percent! A sac spider’s offspring that survives normally does so at the expense of several of its siblings. Spiders in the house are very seldom a health or safety threat here in San Diego County, but they can be a real nuisance with their unsightly webs and their threatening demeanor. Spider bites usually happen when someone picks up some firewood or moves things around in a shed or garage. It is also quite possible to be bit in bed or putting on clothing with a spider inside.
The following is a list of some of the local spiders that you may come across. Please understand that there is no comprehensive list of NorthCounty spiders.
Two basic types of spiders that we commonly find around north county homes are web spinners and hunters. Hunting spiders, sometimes called “wolf” spiders (pictured) scurry around, mostly at night, seeking a bug to jump on and eat. They do not use webs to capture their prey and they often have several eyes. The largest of the hunters is the Tarantula, often growing to fist size, and the smallest is a little “Wolf” spider about as big as this “o”. Spiders feed on each other and on other bugs that they can capture or overpower. Web spinners use their spinnerets to create bug traps and to make nests or egg sacs that they spin for their offspring. Their webs can be tunnels, trap doors, nets, tents, sacs, and intricately patterned orbs. Some of the webs are sticky, and others can be
tough enough to use in gun sights!