Grass spider

Grass spider

Taxobox
name = Grass spider


image_width = 250px
regnum = Animalia
phylum = Arthropoda
classis = Arachnida
ordo = Araneae
familia = Agelenidae
genus = "Agelenopsis"
genus_authority = Giebel, 1869
type_species =
type_species_describer =
diversity_link = List of Agelenidae species#Agelenopsis
diversity = 13 species
subdivision_ranks = Species
subdivision = see text

The grass spiders are members of the genus "Agelenopsis". 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. They may be recognized by the arrangement of their eight eyes into three rows. The larger specimens (depending on species) can get up to approximately 3/4" (19 mm)--body length only. 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 also have two prominent hind spinnerets, and somewhat indistinct bands on their legs"

"Agelenopsis aperta", the American funnel web spider, produces agatoxins. Their bite causes rapid paralysis in insect prey.

Name

The genus name is a combination of "Agelena" a genus of similar spiders, and Greek "-opsis" "to look like". They are harmless spiders.

pecies

* "Agelenopsis actuosa" (Gertsch & Ivie, 1936) (USA, Canada)
* "Agelenopsis aleenae" Chamberlin & Ivie, 1935 (USA)
* "Agelenopsis aperta" (Gertsch, 1934) (USA, Mexico)
* "Agelenopsis emertoni" Chamberlin & Ivie, 1935 (USA)
* "Agelenopsis kastoni" Chamberlin & Ivie, 1941 (USA)
* "Agelenopsis longistyla" (Banks, 1901) (USA)
* "Agelenopsis naevia" (Walckenaer, 1842) (USA, Canada)
* "Agelenopsis oklahoma" (Gertsch, 1936) (USA)
* "Agelenopsis oregonensis" Chamberlin & Ivie, 1935 (USA)
* "Agelenopsis pennsylvanica" (C. L. Koch, 1843) (USA)
* "Agelenopsis potteri" (Blackwall, 1846) (North America, introduced in Russia)
* "Agelenopsis spatula" Chamberlin & Ivie, 1935 (USA)
* "Agelenopsis utahana" (Chamberlin & Ivie, 1933) (USA, Canada, Alaska)

Other pictures

References

* Platnick, N. I. (2007). [http://research.amnh.org/entomology/spiders/catalog/index.html The world spider catalog] , version 7.5. "American Museum of Natural History".

External links

* [http://spiders.entomology.wisc.edu/Agelenidae/ Agelenidae species]
* [http://www.forestryimages.org/browse/subimages.cfm?SUB=11510 Pictures of "Agelenopsis sp."] (free for noncommercial use)


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  • Grass spider — Grass Grass, n. [OE. gras, gres, gers, AS, gr[ae]s, g[ae]rs; akin to OFries. gres, gers, OS., D., G., Icel., & Goth. gras, Dan. gr[ae]s, Sw. gr[aum]s, and prob. to E. green, grow. Cf. {Graze}.] 1. Popularly: Herbage; the plants which constitute… …   The Collaborative International Dictionary of English

  • grass spider — noun : any of various spiders that spin concave webs on grass which are conspicuous when covered with dew; especially : a common No. American spider (Agalena naevia) * * * grass spider, any one of various spiders that spin funnel shaped webs on… …   Useful english dictionary

  • Grass — Grass, n. [OE. gras, gres, gers, AS, gr[ae]s, g[ae]rs; akin to OFries. gres, gers, OS., D., G., Icel., & Goth. gras, Dan. gr[ae]s, Sw. gr[aum]s, and prob. to E. green, grow. Cf. {Graze}.] 1. Popularly: Herbage; the plants which constitute the… …   The Collaborative International Dictionary of English

  • Grass bass — Grass Grass, n. [OE. gras, gres, gers, AS, gr[ae]s, g[ae]rs; akin to OFries. gres, gers, OS., D., G., Icel., & Goth. gras, Dan. gr[ae]s, Sw. gr[aum]s, and prob. to E. green, grow. Cf. {Graze}.] 1. Popularly: Herbage; the plants which constitute… …   The Collaborative International Dictionary of English

  • Grass bird — Grass Grass, n. [OE. gras, gres, gers, AS, gr[ae]s, g[ae]rs; akin to OFries. gres, gers, OS., D., G., Icel., & Goth. gras, Dan. gr[ae]s, Sw. gr[aum]s, and prob. to E. green, grow. Cf. {Graze}.] 1. Popularly: Herbage; the plants which constitute… …   The Collaborative International Dictionary of English

  • Grass cloth — Grass Grass, n. [OE. gras, gres, gers, AS, gr[ae]s, g[ae]rs; akin to OFries. gres, gers, OS., D., G., Icel., & Goth. gras, Dan. gr[ae]s, Sw. gr[aum]s, and prob. to E. green, grow. Cf. {Graze}.] 1. Popularly: Herbage; the plants which constitute… …   The Collaborative International Dictionary of English

  • Grass finch — Grass Grass, n. [OE. gras, gres, gers, AS, gr[ae]s, g[ae]rs; akin to OFries. gres, gers, OS., D., G., Icel., & Goth. gras, Dan. gr[ae]s, Sw. gr[aum]s, and prob. to E. green, grow. Cf. {Graze}.] 1. Popularly: Herbage; the plants which constitute… …   The Collaborative International Dictionary of English

  • Grass lamb — Grass Grass, n. [OE. gras, gres, gers, AS, gr[ae]s, g[ae]rs; akin to OFries. gres, gers, OS., D., G., Icel., & Goth. gras, Dan. gr[ae]s, Sw. gr[aum]s, and prob. to E. green, grow. Cf. {Graze}.] 1. Popularly: Herbage; the plants which constitute… …   The Collaborative International Dictionary of English

  • Grass land — Grass Grass, n. [OE. gras, gres, gers, AS, gr[ae]s, g[ae]rs; akin to OFries. gres, gers, OS., D., G., Icel., & Goth. gras, Dan. gr[ae]s, Sw. gr[aum]s, and prob. to E. green, grow. Cf. {Graze}.] 1. Popularly: Herbage; the plants which constitute… …   The Collaborative International Dictionary of English

  • Grass moth — Grass Grass, n. [OE. gras, gres, gers, AS, gr[ae]s, g[ae]rs; akin to OFries. gres, gers, OS., D., G., Icel., & Goth. gras, Dan. gr[ae]s, Sw. gr[aum]s, and prob. to E. green, grow. Cf. {Graze}.] 1. Popularly: Herbage; the plants which constitute… …   The Collaborative International Dictionary of English

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