Biology:Leucauge argyra
| Leucauge argyra | |
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| Leucauge argyra in Jamaica | |
Scientific classification 
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| Domain: | Eukaryota |
| Kingdom: | Animalia |
| Phylum: | Arthropoda |
| Subphylum: | Chelicerata |
| Class: | Arachnida |
| Order: | Araneae |
| Infraorder: | Araneomorphae |
| Family: | Tetragnathidae |
| Genus: | Leucauge |
| Species: | L. argyra
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| Binomial name | |
| Leucauge argyra (Walckenaer, 1842)
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| Synonyms | |
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Leucauge argyra is a spider found North, Central and South America (from United States to Brazil and the Caribbean. Leucauge argyra (and many other Leucauge spp.) is known to be a colonial species, with spiders maintaining individual territories/orb webs within a scaffolding of shared support lines maintained by the group. Colonies of multi-generational individuals are often seen with some levels of size stratification (where larger individuals/adults occupy the highest web positions and smaller individuals/juveniles occupy lower web positions).[1] It is known for being the host of the Hymenoepimecis argyraphaga, a Costa Rican or Puerto Rican parasitoid wasp.[2]
Description
Leucauge argyra has three lines on the abdomen that run parallel only about halfway across the abdomen, where the outer two bend inward before continuing parallel again through the rest of the abdomen. These markings can be somewhat variable, and different from L. venusta, where the abdomen has inverted V-markings.[3]
Females have an epigyne with a ventral projection that is unique in the genus.
The web of juveniles has an upper tangle with threads connecting it to the hub and occasionally another tangle below the orb web, but these tangles are absent in webs of adults. The upper tangle consists of a few threads that cover only a narrow section across the middle of the orb.[4]
A similar species to L. argyra is Leucauge mariana.
Gallery
L. argyra in web
Female of L. argyra showing the projection of the epigyne (click to enlarge)
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References
- ↑ "Archived copy". http://www.americanarachnology.org/JoA_free/JoA_v38_n3/arac-38-03-446.pdf.
- ↑ Eberhard, W. (2001) Under the influence: Webs and building behavior of Plesiometa argyra (Araneae, Tetragnathidae) when parasitized by Hymenoepimecis argyraphaga (Hymenoptera, Ichneumonidae). The Journal of Arachnology 29:354–366.
- ↑ Walckenaer, C.A. (1842) Histoire naturelle des Insects. Aptères. Paris, 2:1-549.
- ↑ Barrantes, G., Cuyckens E. (2011) Function of the upper tangle in webs of young Leucauge argyra (Araneae: Tetragnathidae). American Arachnological Society.
- Platnick, Norman I. (2009): The world spider catalog, version 9.5. American Museum of Natural History.
External links
Wikidata ☰ Q2180409 entry
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