Natural history of the trapdoor spider Idiops joida Gupta et al 2013 (Araneae: Idiopidae) from the Western Ghats in India

Gupta, Neha; Das, Sanjay Keshari; Siliwal, Manju

doi:10.1016/j.japb.2015.01.004

“…The studied burrows occur in a patch, and burrows with adults and juveniles were located close together. These features are typical of spider burrows (e.g., Coyle 1971;Main 1978;Coyle and Icenogle 1994;Bradley 1996;Canning et al 2014;Gupta et al 2015). Hils and Hembree (2015) stated that spider burrows are elliptical in cross section, but this feature is observed only in the lower part of the burrows of Trochosa hispanica.…”

Section: Fossil Record Of Spider Burrowsmentioning

confidence: 99%

Elemental and lead isotopic composition of atmospheric particulate measured in the Arctic region (Ny-Ålesund, Svalbard Islands)

Bazzano

¹

,

Ardini

²

,

Grotti

³

et al. 2016

Rend. Fis. Acc. Lincei

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A general review of spider burrows and history of their research in eighteenth to nineteenth centuries are provided on the basis of the literature, which is dispersed and almost forgotten by majority of ichnologists. Moreover, burrows of the wolf spider Trochosa hispanica Simon, 1870 from a mountain meadow in Albania are presented. They are composed of an almost straight through gently curved to slightly winding vertical shafts (8.2-17.2 mm in diameter) with a basal, oval chamber, which is 14.5-30.6 mm wide. Above the ground level, some of them show a low, agglutinated chimney a cone composed of soil granules. The burrows are 83-235 mm long. They are comparable with the trace fossil Macanopsis Macsotay, 1967. Other spider burrows can form a simple shaft, which may be ascribed to the ichnogenus Skolithos Haldeman, 1840, or a shaft with the side oblique branches, which is is similar to the ichnogenus Psilonichnus Fürsich, 1981. Many spider burrows show one or more chambers. Their outlet may be closed with a trapdoor or show a chimney sticking above the ground. They may show scratch traces running parallel to the burrow. The burrows are domiciles in which spiders spend a part of, or even the whole life. They protect spiders against harsh environmental conditions, foremost against too low or to high temperature, sheet floods, or predators. Moreover, they can be also a place for copulation, oviposition, parental care, placement of cocoons, or shedding the exuvia. Burrowing spider are more common in in warmer climatic zones, in open space, above the water ground level, and less common in flooded. So far, very few examples of fossil spider burrows are recognised, mostly in Cenozoic sediments, even if spiders are known since the Carboniferous.

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“…The studied burrows occur in a patch, and burrows with adults and juveniles were located close together. These features are typical of spider burrows (e.g., Coyle 1971;Main 1978;Coyle and Icenogle 1994;Bradley 1996;Canning et al 2014;Gupta et al 2015).…”

Section: Lessons From the Burrows Of Trochosamentioning

confidence: 99%

“…Spiders prefer places where the lower part of their burrows is in a humid substrate (Coyle 1971). Commonly, the burrows occur in patches (e.g., Coyle 1971;Coyle and Icenogle 1994;Bradley 1996;Canning et al 2014;Gupta et al 2015) and burrows of young spiders are located close to the burrows of adults (Coyle and Icenogle 1994;Bond and Coyle 1995).…”

Section: General Remarks On Spider Burrowsmentioning

confidence: 99%

Spider burrows in ichnological context: a review of literature data and burrows of the wolf spider Trochosa hispanica Simon, 1870 from Albania

Uchman

¹

,

Vrenozi

²

,

Muceku

³

2017

Rend. Fis. Acc. Lincei

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A general review of spider burrows and history of their research in eighteenth to nineteenth centuries are provided on the basis of the literature, which is dispersed and almost forgotten by majority of ichnologists. Moreover, burrows of the wolf spider Trochosa hispanica Simon, 1870 from a mountain meadow in Albania are presented. They are composed of an almost straight through gently curved to slightly winding vertical shafts (8.2-17.2 mm in diameter) with a basal, oval chamber, which is 14.5-30.6 mm wide. Above the ground level, some of them show a low, agglutinated chimney a cone composed of soil granules. The burrows are 83-235 mm long. They are comparable with the trace fossil Macanopsis Macsotay, 1967. Other spider burrows can form a simple shaft, which may be ascribed to the ichnogenus Skolithos Haldeman, 1840, or a shaft with the side oblique branches, which is is similar to the ichnogenus Psilonichnus Fürsich, 1981. Many spider burrows show one or more chambers. Their outlet may be closed with a trapdoor or show a chimney sticking above the ground. They may show scratch traces running parallel to the burrow. The burrows are domiciles in which spiders spend a part of, or even the whole life. They protect spiders against harsh environmental conditions, foremost against too low or to high temperature, sheet floods, or predators. Moreover, they can be also a place for copulation, oviposition, parental care, placement of cocoons, or shedding the exuvia. Burrowing spider are more common in in warmer climatic zones, in open space, above the water ground level, and less common in flooded. So far, very few examples of fossil spider burrows are recognised, mostly in Cenozoic sediments, even if spiders are known since the Carboniferous.

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“…During subsequent field campaigns, only one adult male was seen and that corresponded to a juvenile specimen later molting in laboratory conditions. This could be due to the short life span of males, as for other trapdoor species they are short-lived wandering when adulthood is reached ( Gupta et al 2015 ).…”

Section: Species Conservation Profilesmentioning

confidence: 99%

Species conservation profile of the rare and endemic trapdoor spider Calathotarsus simoni (Araneae, Migidae) from Central Argentina

Ferretti¹,

Pompozzi²,

Cardoso³

2017

BDJ

3

1

0

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BackgroundCalathotarsus simoni Schiapelli & Gerschman 1975 is the only species of Migidae in Argentina. It is a rare and endemic spider only found in relict grassland of mountain systems in the province of Buenos Aires. This species is a habitat specialist spider occupying specific areas with certain microclimatic conditions on hilly and rocky grassland areas at about 500-1500 meters above sea level.New informationThe observed extent of occurrence (EOO) is 7207 km2 and the area of occupancy (AOO) is 16 km2. Two locations are identified based on the threat event related to the invasion of the species habitat by alien woody plants. In addition, intensive cattle production and agriculture also constitute relevant threats to the species.

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Natural history of the trapdoor spider Idiops joida Gupta et al 2013 (Araneae: Idiopidae) from the Western Ghats in India

Cited by 7 publications

References 3 publications

Elemental and lead isotopic composition of atmospheric particulate measured in the Arctic region (Ny-Ålesund, Svalbard Islands)

Elemental and lead isotopic composition of atmospheric particulate measured in the Arctic region (Ny-Ålesund, Svalbard Islands)

Spider burrows in ichnological context: a review of literature data and burrows of the wolf spider Trochosa hispanica Simon, 1870 from Albania

Species conservation profile of the rare and endemic trapdoor spider Calathotarsus simoni (Araneae, Migidae) from Central Argentina

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