colulus

colulus (plural coluli)

1. A vestigial organ between the spinnerets in some spiders lacking a cribellum.
   • 1985, Michael John Roberts, The Spiders of Great Britain and Ireland, page 172:

     The generic key given here makes partial use of the above work, initially splitting the family into three groups of genera based on the presence or absence of the colulus.

• loculus, ullucos