Plexippus paykulli

Plexippus paykulli
Female Plexippus paykulli
Scientific classification
Kingdom:	Animalia
Phylum:	Arthropoda
Class:	Arachnida
Order:	Araneae
Family:	Salticidae
Subfamily:	Plexippinae
Genus:	Plexippus
Species:	P. paykulli
Binomial name
Plexippus paykulli Audouin, 1826
Synonyms
Attus paykullii Audouin, 1826 Attus ligo Walckenaer, 1837 Plexipus ligo C.L.Koch, 1846 Plexippus punctatus Karsch, 1878 Thotmes paykulli F.O.P., 1901 Menemerus crassus Hogg, 1922 Hyllus mimus Chamberlin, 1924 Sandalodes magnus Berland, 1933 Apamamia bocki Roewer, 1944 Plexippus quadriguttatus Mello-Leitão, 1946 Marpissa bengalensis Tikader, 1974 Marpissa mandali Tikader, 1974[1]

Male Plexippus paykulli

Plexippus paykulli is a jumping spider in the family Salticidae. It is native to south east Asia but has spread to other parts of the world. In the United States it is called the pantropical jumping spider. It is usually associated with buildings^[2] and may be found near light sources catching insects attracted by the light.^[3]

Distribution

Plexippus paykulli is cosmopolitan in distribution.^[4] It has been reported from tropical regions of Africa and Asia. In the American continent it was introduced to Florida and also occurs in Texas, extending as far south as Paraguay.^[5][6]

Description

Spiders in this species are robust, with a high carapace, and are covered with short greyish hairs. They are about ten millimetres long, the female being slightly larger than the male. The sexes are easy to tell apart as the males have a black carapace and abdomen with a broad white central stripe, another broad white stripe on either side and a pair of white spots near the posterior end of the abdomen. The stripe continues between the anterior eyes so that the face appears to have three white stripes on a black background. The female is brownish grey, the carapace being darker especially around the eyes, with a broad tan stripe that extends onto the abdomen where it breaks into two chevrons. There are two white spots on either side of the posterior end of the abdomen. Immature spiders resemble the females.^[2]

Biology

Plexippus paykulli is generally found living in and around man-made structures, in particular inside buildings,^[5] although it has also been recorded from citrus groves^[7] and cotton fields.^[8] The female creates an eggsac about three centimetres in diameter in a concealed location under floorboards, in a crack or under the eaves. In this a lens-shaped silken case is made into which 35 to 60 eggs are deposited. The female guards these until the spiderlings emerge and disperse some three to four weeks later.^[2]

This spider does not spin a web but builds a silken retreat in an elevated position such as the edge of the ceiling from which it makes hunting forays. It has very acute eyesight and approaches its target prey stealthily, leaping on it when close enough. Prey species that have been recorded as being part of the diet include Diptera, Hemiptera, Hymenoptera, Lepidoptera, Odonata, Orthoptera and Aranea. In one study, these spiders hunted and consumed individuals of sixteen species of arthropods from fourteen families and six orders.^[9] They are reported as being a predator of mosquitoes in African houses,^[10] and of insect pests in India^[11] and Bangladesh.^[12] They are highly agile and can cover many times their own body length in a single jump.^[13] In a building where the only available prey were German cockroaches, Blattella germanica, the spiders not only survived but also bred on this monophagous diet.^[6] They are able to successfully kill prey twice their own size. Large arthropods are injected with venom but are usually overpowered by brute strength before the venom has immobilized them. There have been records of the prey flying, jumping or running away with the spider clinging to it until the victim was eventually overpowered.^[9] A study investigated the way in which these spiders stalked their prey. It was found that a mobile prey like a fly was stalked in a different manner to an immobile one such as a maggot. On a camouflaged background, the spider approached with greater stealth and jumped from a shorter distance to attack a mobile prey. This gave the spider a greater likelihood of a successful outcome without prior detection.^[14]

References

External links

Wikimedia Commons has media related to Plexippus paykulli.

• Plexippus paykulli at Worldwide database of jumping spiders
• Plexippus paykulli at Global Species Database of Salticidae (Araneae)
• Plexippus paykulli at Salticidae: Diagnostic Drawings Library
• Plexippus paykulli at Bugguide.net