| Six spinnerets with different types of spigots and a specialised spinning organ called the cribellum. |
| The cribellum is sometimes covered by a fold of the skin, so that it is not readily seen. |
| There are two quite distinct types of regular webs made by spiders possessing a cribellum and a calamistrum. |
| The cribellum is a cigar-shaped plate on the underside of the abdomen, in front of the spinnerets. |
| Spiders of this type are said to be cribellate and the presence of a cribellum is a useful way to group species. |
| Cribellate silk is combed out from the cribellum using the calamistrum, a group of specialized, curved setae on the metatarsus of the fourth leg. |
