Yellow sac spider
Know more?
The Yellow sac spider is originally a Mediterranean species that is gradually expanding its range towards the north.
Eutichurid spiders (Cheiracanthiidae)
Yellow sac spider/Spiny false wolf spider (Cheiracanthium mildei)
Web: The Yellow sac spider doesn’t construct a web, but catches its prey through active, visual hunting.
Habitat: The Yellow sac spider can be found in a sac-like retreat in a curled up leaf or underneath stones and bark. In Belgium especially close to or in buildings (but recently also in a nature reserve, far removed from buildings.
How to recognize:
- medium size spider with large jaws
- abdomen yellow to olive green, with clear cardiac mark. Cephalothorax often more dark coloured, sometimes red
- yellow legs, with frontpair being the longest.
Looks similar to:
Cheiracanthium virescens: this species lives mainly in heathland and will almost never occur near or in houses. Certain identification only through using a stereomicroscope.
Size:
♀: 6-11 mm
♂: 6-9 mm
When?
♀: May till December
♂: May till December
