The Bowl and Doily spiders (Frontinella pyramitela, family: Linyphiidae) are small (about 4 mm. or 2/10 inch) spiders that weave a fairly complex sheet web system consisting of an inverted dome shaped web ("bowl") suspended above a horizontal sheet web ("doily").
External link
Frontinella pyramitela web (photo) (http://www.marion.ohio-state.edu/spiderweb/SpiderPictures/Linyphiidae/Frontinella%20pyramitela%20web.htm)
These spiders have the ability to slowly change color to match the color of the flower they are on; white, pink, and yellow specimens are commonly seen.
Wolf spiders have a reflective layer in their eyes, the tapetum, which will be visible at night as a sparkling point of blue-green light by flashlight.
Spiders may be controlled by the use of a fast acting poison with little residual activity sprayed directly on the offending animals.
Spiders reproduce by eggs laid in silk bundles called egg sacs, and the male (usually significantly smaller than the female) is likely to be killed by the female after the coupling, or sometimes before intercourse has occurred.
When sexually mature, a male spider will spin a web pad onto which the contents of the abdominal reproductive organs are discharged and then the seminal fluid is transferred into the cavities of the palpi; when an individual secures a mate he thrusts the palpi one at a time into her abdominal genital openings.
The widow spiders, brown recluse spiders, hobo spiders, and yellow sac spiders are the dangerous ones among U.S. spiders.
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