Argiope pulchella

Argiope pulchella(also known as the orb weaver) is a species of the orb spider family, Araneidae. It ranges from India to China and can be found on Java. It is a synanthropic species, often living in habitats associated with humans.

Argiope pulchella
Female, male at top right
Scientific classification
Kingdom: Animalia
Phylum: Arthropoda
Subphylum: Chelicerata
Class: Arachnida
Order: Araneae
Infraorder: Araneomorphae
Family: Araneidae
Genus: Argiope
Species:
A. pulchella
Binomial name
Argiope pulchella
Thorell, 1881[1]

Description

The female is larger than the male, being 8 to 10 mm (0.3 to 0.4 in) while the male is 4 to 6 mm (0.16 to 0.24 in). The female cephalothorax is slightly longer than it is wide and is clad in a white, silky pubescence. The two central eyes are surrounded by black rings and are situated on a prominent tubercle. The chelicerae are brown and rather small. The legs are long and robust, clad with spines and hairs and banded in brown and yellow. The abdomen is pentagonal, overlaps the cephalothorax a little and is slightly longer than it is wide. The dorsal surface is pubescent and is bright yellow in color with three horizontal black bands. The ventral surface is brown with two longitudinal white patches. The male has a more drab appearance, having a dark brown cephalothorax and lacking the stripes found in the female.[2]

Ecology

The female spins an orb-shaped web out of silk. The male does not spin a web, instead it occupies the periphery of the female's web.[3] This species is found naturally in forests, woodland glades and gardens. Other than these natural habitats, it is found abundantly in disturbed habitats like rubbish dumps, drains and sewage works. Juveniles tend to stay in a wider variety of habitats, where sub-adults and adults live primarily in garden areas and roadside drains and domestic sewage[4]. It is an entomophagous predator that preys on a wide range of insects. The female builds a web with a zig-zag stabilimentum and positions itself head-down in the centre. If disturbed, it drops to the ground, returning to its original position when the disturbance passes.[2] A male wishing to mate with the female employs certain courtship behaviours including vibrating the web. It has been shown that the female is more receptive to a male that "shudders" the web at high frequencies for long periods; such activities may also make it less likely that the male will be cannibalised after mating.[5]

gollark: Passive cooling is either really expensive or bad, though.
gollark: ... fans or HDDs?
gollark: There are some neat but horribly expensive open-air ones.
gollark: *Clearly* the best strategy is ramming.
gollark: Stock, not with BDA?

References
  1. "Argiope pulchella Thorell 1881". EOL. Retrieved 20 February 2020.
  2. Sebastian, P.A.; Peter, K.V. (2009). Spiders of India. Universities Press. pp. 133–134. ISBN 978-81-7371-641-6.
  3. "Argiope pulchella - Garden cross spider". India Biodiversity Portal. Retrieved 12 November 2018.
  4. Das et. all, Sangeeta (May 2018). "Argiope pulchella Thorell, 1881 (Araneidae: Araneae): A potential synanthropic species". ResearchGate: 3 – via ResearchGate.
  5. Wignall, Anne E.; Herberstein, Marie E. (2013). "The Influence of Vibratory Courtship on Female Mating Behaviour in Orb-Web Spiders (Argiope keyserlingi, Karsch 1878)". PLOS ONE. 8 (1): e53057. Bibcode:2013PLoSO...853057W. doi:10.1371/journal.pone.0053057. PMC 3547032. PMID 23341922.CS1 maint: multiple names: authors list (link)
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