how many eyes do orb weaver spiders have
eight
title: Orb-weaver spider text: Orb-weaver spider Orb-weaver spiders or araneids are members of the spider family Araneidae. They are the most common group of builders of spiral wheel-shaped webs often found in gardens, fields and forests. "Orb" was previously used in English to mean "circular", hence the English name of the group. Araneids have eight similar eyes, hairy or spiny legs, and no stridulating organs. The family is cosmopolitan, including many well-known large or brightly colored garden spiders. With 3122 species in 172 genera worldwide, Araneidae is the third-largest family of spiders (behind Salticidae and Linyphiidae). Araneid webs are constructed in a stereotyped fashion. title: Wolf spider text: chelicerae and pedipalps). Two of the wolf spider's eight eyes are large and prominent, which distinguishes them from the nursery web spiders whose eyes are all of roughly equal size. This can also help distinguish them from grass spiders. The many genera of wolf spiders range in body size (legs not included) from less than . They have eight eyes arranged in three rows. The bottom row consists of four small eyes, the middle row has two very large eyes (which distinguishes them from the Pisauridae), and the top row has two medium-sized eyes. Unlike most other arachnids, which are title: Orb-weaver spider text: is a venomous insect, such as a wasp, wrapping may precede biting and/or stinging. Many orb-weavers build a new web each day. Most orb-weavers tend to be active during the evening hours; they hide for most of the day. Generally, towards evening, the spider will consume the old web, rest for approximately an hour, then spin a new web in the same general location. Thus, the webs of orb-weavers are generally free of the accumulation of detritus common to other species, such as black widow spiders. Some orb-weavers do not build webs at all. Members of the genera "Mastophora" in title: Barn spider text: quite variable. They are about three-quarters of an inch (20 mm) long with large, round abdomens. Barn spiders are nocturnal. Like many other species of orb weavers, they take their webs down during daytime and build another every evening, consuming the silk from the previous web to conserve their resources. Their "orb" webs are constructed archetypically, with symmetrical spokes connected by a spiral inside. They hide during the day and at night sit in the middle of the web and wait for an insect to land on the web. These spiders may or may not have a venomous bite. Their title: Agelenopsis text: Agelenopsis Agelenopsis is a genus of spiders, known as American grass spiders. They weave sheet webs that have a funnel shelter on one edge. The web is not sticky, but these spiders make up for that shortcoming by running very rapidly. The larger specimens (depending on species) can grow to about 19 mm in body length. They may be recognized by the arrangement of their eight eyes into three rows. The top row has two eyes, the middle row has four eyes, and the bottom row has two eyes (spaced wider than the ones on the top row). They have