| Gladicosa | |
|---|---|
 | |
| G. gulosa | |
Scientific classification  | |
| Kingdom: | Animalia |
| Phylum: | Arthropoda |
| Subphylum: | Chelicerata |
| Class: | Arachnida |
| Order: | Araneae |
| Infraorder: | Araneomorphae |
| Family: | Lycosidae |
| Genus: | Gladicosa Brady, 1987 [1] |
Gladicosa is a genus of wolf spiders found in the United States and Canada. [1]
As of April 2016 [update] , the World Spider Catalog accepted the following species: [1]
Latrodectus is a broadly distributed genus of spiders with several species that are commonly known as the true widows. This group is composed of those often loosely called black widow spiders, brown widow spiders, and similar spiders. However, the diversity of species is much greater. A member of the family Theridiidae, this genus contains 34 species, which include several North American "black widows". Besides these, North America also has the red widow Latrodectus bishopi and the brown widow Latrodectus geometricus, which, in addition to North America, has a much wider geographic distribution. Elsewhere, others include the European black widow, the Australian redback spider and the closely related New Zealand katipō, several different species in Southern Africa that can be called button spiders, and the South American black-widow spiders. Species vary widely in size. In most cases, the females are dark-coloured and can be readily identified by reddish markings on the central underside (ventral) abdomen, which are often hourglass-shaped.
Agelenopsis, commonly known as the American grass spiders, is a genus of funnel weavers first described by C.G. Giebel in 1869. 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 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. They have two prominent hind spinnerets, somewhat indistinct bands on their legs, and two dark bands running down either side of the cephalothorax.
Nursery web spiders (Pisauridae) is a family of araneomorph spiders first described by Eugène Simon in 1890. They resemble wolf spiders (Lycosidae) except for several key differences. Wolf spiders have two very prominent eyes in addition to the other six, while a nursery web spider's eyes are all about the same size. Additionally, female nursery web spiders carry their egg sacs with their jaws and pedipalps instead of attaching them to their spinnerets as wolf spiders do. When the eggs are about to hatch, a female spider builds a nursery "tent", places her egg sac inside, and stands guard outside, hence the family's common name. Like the wolf spiders, however, the nursery web spiders are roaming hunters that don't use webs for catching prey.
The family Cyrtaucheniidae, known as wafer-lid trapdoor spiders, are a widespread family of Mygalomorphae spiders.
The Agelenidae are a large family of spiders in the suborder Araneomorphae. Well-known examples include the common "grass spiders" of the genus Agelenopsis. Nearly all Agelenidae are harmless to humans, but the bite of the hobo spider may be medically significant, and some evidence suggests it might cause necrotic lesions, but the matter remains subject to debate. The most widely accepted common name for members of the family is funnel weaver.
Cybaeidae is a family of spiders first described by Nathan Banks in 1892. The diving bell spider or water spider Argyroneta aquatica was previously included in this family, but is now in the family Dictynidae.
Habronattus is a genus in the family Salticidae. Most species are native to North America. They are commonly referred to as paradise spiders due to their colorful courtship ornaments and complex dances, similar to birds-of-paradise.
Neon is a spider genus of the jumping spider family, Salticidae. Its described species occur mostly in Eurasia, with some species found in North and South America. One species, N. convolutus, is also found in Algeria. Two species are known from Australia, N. australis and N. taylori. N. australis has palp morphology and fringing on its first pair of legs very similar to that seen in N. nojimai Ikeda 1995, from Japan. N. taylori is most similar in morphology to N. sumatranus from Indonesia and N. kovblyuki from the Crimea and elsewhere. The genus is common and widespread in litter throughout Australia, from the highlands of Tasmania through the hot, dry inland to the wet tropics and includes many undescribed species.
Zygoballus is a genus of jumping spiders found in North and South America.
Pimoidae is a small family of araneomorph spiders first described by J. Wunderlich in 1986. As re-circumscribed in 2021, it is monophyletic, and contained 85 species in two genera. It is closely related to the Linyphiidae, and is sometimes treated as synonymous with that family.
Erieopterus is a genus of prehistoric eurypterid found in Silurian to Devonian-aged marine strata of Europe and North America. The genus contains eight species from the Silurian to the Devonian, recovered from both North America and Europe.
Coneweb spiders (Diguetidae) are six-eyed haplogyne spiders that live in tangled space webs, fashioning a cone-like central retreat where they hide and lay eggs. It is a small family, containing only two genera with fifteen species and is confined to the New World, preferring deserts. Members of the genus Diguetia usually build their webs in shrubs or between cactus pads. They have the same eye arrangement as the venomous recluse spiders, but none are known to be harmful to humans.
Coras is a genus of funnel weavers first described by Eugène Simon in 1898. It has fifteen described species that occur in eastern North America from Nova Scotia south to Florida. They can be readily distinguished from other genera in the subfamily by their anterior median eyes being larger than the anterior lateral eyes, whereas in other genera the reverse is true, along with a number of more technical reproductive features. The type species is Coras medicinalis.
Scotinotylus is a genus of sheet weavers that was first described by Eugène Louis Simon in 1884.
Spirembolus is a genus of North American sheet weavers that was first described by Ralph Vary Chamberlin in 1920.
Pisaurina is a genus of nursery web spiders that was first described by Eugène Louis Simon in 1898. It likes to live within vegetated areas such as meadows, bushes or tall grass, preferring warm or tropical areas to settle down and reproduce.
Tigrosa is a genus of spiders in the family Lycosidae, found in North America.
Oaphantes is a genus of North American dwarf spiders that was first described by Ralph Vary Chamberlin & Vaine Wilton Ivie in 1943.
Castianeira alteranda is a species of true spider in the family Corinnidae. It is found in the USA and Canada.
Gladicosa pulchra is a species of wolf spider in the family Lycosidae. It is found in the United States.
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