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Wildcliff Nature Reserve

Dedicated to plant and wildlife conservation in South Africa's Cape Floral Kingdom


Arthropods of Wildcliff

South Africa exhibits a wide diversity of insects and spiders, and many fascinating ones are being found at Wildcliff. Our inventory of insects and spiders is an ongoing project, and further research is invited (see the research page). One can view photographs of some of them in a slideshow -- just click on the image at right.
Insects of Wildcliff
Click on the photo for more pictures
Nephila fenestrata - golden orb web spider female
Golden orb-web spider, Nephila pilipes fenestrata

One of the fascinating creatures you'll encounter in the slideshow is the beautiful, shy, black-legged golden orb-web spider, Nephila pilipes fenestrata, pictured at left in its unique yellow web.

This is a female, despite the hairy legs. The males are tiny - as little as 1/1000 of the size of females -- so they have to be careful lest they get eaten when seeking to copulate. An amorous male will usually only approach the female when she is occupied with feeding. He descends towards her and inserts his sexual organs, called pedipalps, one by one, into her genital opening which is situated underneath her abdomen. Copulation may take many hours and afterwards the exhausted male retreats to a safe place away from the female.
To protect his paternity, the male may break off his copulatory organs, leaving fragments that obstruct the female's genital openings.

More pictures of this and other arthropods in the slideshow.


Insects of the World

Class: Insecta

Main Orders Meaning
Est. number
of species
Examples
Coleoptera "hard wings"
400,000
Scarab beetles
Lepidoptera "scaly wings"
150,000
Butterflies
Hymenoptera "membrane wings"
130,000
Ants and Bees
Diptera "two wings"
120,000
Mosquitoes
Hemiptera "half wings"
82,000
Cicadas
Orthoptera "straight wings"
20,500
Crickets
Trichoptera "hairy wings"
10,000
Caddis Flies
Collembola "sticky peg"
6,000
Springtails
Odonata "toothed flies"
5,500
Dragonflies
Neuroptera "net-veined wings"
5,000
Lacewings
Thysanoptera "fringed wings"
5,000
Thrips
Blattodea "insect avoiding light"
3,700
Cockroaches
Pscoptera "milled wings"
3,200
Woodlice
Phthiraptera "louse wings"
3,000
Lice
Phasmatodea "like a ghost"
2,500
Walking Stick
Siphonaptera "tube without wings"
2,400
Fleas
Isoptera "equal wings"
2,300
Termites
Ephemeroptera "living for a day"
2,100
Mayflies
Piecoptera "wickerwork wings"
2,000
Stoneflies
Dermaptera "leathery wings"
1,800
Earwigs
Mantodea "like a prophet"
1,800
Praying Mantis
Mecoptera "long wings"
400
Scorpion Flies
Thysanura "bristle tails" 370 Silverfish

Spiders of the World

Class: Arachnida
Order: Araneae

Sub Orders No of Families Estimated # Examples
Labidognatha
90
32,000
House Spiders
Orthognatha
15
3,000
Tarantulas
Mesothelae
1
24
Segmented Spiders

Links & References

Books
  • A Field Guide to Insects of South Africa, by Mike Picker, Alan Weaving and Charles Griffiths.*
  • A Fieldguide to the Dragonflies of South Africa, by Warwick and Michele Tarboton (out of print).
  • A Fieldguide to the Damselflies of South Africa, by Warwick and Michele Tarboton.*
  • Freshwater Invertebrates of Southern Africa (a 10-volume set).*
*In the Wildcliff Library

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Copyright ©2008 Ian Giddy. All rights reserved