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A Guide to Common Singapore Spiders
by Joseph K H Koh
  Grainy Oedignatha
Oedignatha scrobiculata Thorell 1881
close up of black female
The carapace has a rough texture and the abdomen is covered dorsally by a hardened shield. Classification: Family Clubionidae, Sac Spiders
Habitat: On the ground of gardens and secondary forests.
Female: 6 mm.
Male: 4.5 mm.
Distribution: Singapore, Malaysia, Indonesia, Sri Lanka, India.
Juveniles have two rows of white spots extending longitudinally over the abdomen, fusing into a white patch above the spinnerets. It makes a nest by covering a small cavity on the ground with a roof made of soil particles bound in silk.

The Sac Spiders include spiders which build characteristic chambers in which to hide themselves for moulting or egg-laying. The chamber is formed from a folded blade of leaf, sealed with a thick layer of silk. Occasionally, a larger chamber is made by fastening several leaves together.
nest made out of folded leaf
Nest of the
Slender Sac Spider
(Chiracanthium sp.)
  From "A Guide to Common Singapore Spiders" by Joseph K. H. Koh
BP Guide to Nature Series published by the Singapore Science Centre and sponsored by British Petroleum
© 2000 Joseph K H Koh