1a) Piriform gland spigots on anterior lateral spinnerets (ALS) greatly enlarged, easily visible with light microscopy.

Spinnerets and spigots of a generalized adult female gnaphosid, showing position of the anterior lateral (ALS), posterior median (PMS), and posterior lateral (PLS) spinneret pairs, along with the distributions of spigots presumed to serve the major ampullate, piriform, cylindrical, aciniform, and minor ampullate glands.

1b) Piriform gland spigots on anterior lateral spinnerets (ALS) scarcely larger than major ampullate gland spigots.

1. anterior lateral spinneret

2. major ampulate gland spigot 3. piriform gland spigot