Vasgeknoop! / All buttoned-up!

Rina Greeff

Jansenville, South Africa

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Artist's Description

’n Foto van ’n bruin knopiespinnekop wat ’n kewer gevang het in haar webdrade op Jansenville in die Oos-Kaap, Suid-Afrika.

Die bruin knopiespinnekop (Engels: Brown button spiders, Latrodectus geometricus) se kleur kan varieer van roomkleurig of geelbruin tot donkerbruin of swart, en selfs grys. Hierdie spinnekop (in die veld en om huise) se gif is sowat ‘n derde so sterk as dié van die swart knopiespinnekop. Die bruin knopiespinnekop-wyfie is uitkenbaar aan die rooi tot oranje uurglas onder haar lyf.
Dit is veral snags aktief en span ’n web gewoonlik met ’ankerdrade’ op die grond. Dié spinnekop vervaardig uiters sterk webdrade en het ‘n vinnigwerkende neurotoksien wat deur die monddele toegedien word.
Daar is omtrent 30 000 soorte spinnekoppe wêreldwyd en in Suid-Afrika is daar ongeveer 5 000 soorte. Die byt van ’n knopiespinnekop is gevaarlik – veral vir kinders en ouer mense kan dit dodelik wees. Die swart knopiespinnekop (’n ‘veldspinnekop’) is die gevaarlikste en giftigste spinnekop in Suid-Afrika.

The Brown button spider (brown widow, grey widow, geometric button spider) is an introduced species and very common in Southern Africa. It is usually found in built-up areas, especially around houses and outbuildings. The egg sac has a spiky appearance.

Latrodectus geometricus is found in many parts of the world (in the United States it is known as the brown widow spider) but it is unknown where this species’ origins are, as specimens were independently discovered in both Africa and in the Americas. African species of this genus are known as button spiders.

They are very similar in appearance to the black buttons but their colour varies from cream, grey and brown to pitch black. The ventral surface of the abdomen in both species has a prominent red to orange hourglass marking. Males are much smaller than females and the markings on their abdomen consist of red or white bands.

Widows tend to be quite non-aggressive, but will bite if the spider feels threatened. The venom, sometimes life-threatening, produces very painful effects.

Kamera hp photosmart 945

Artwork Comments

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