As a companion pet
- Bloodlouse Larva hatches from a , which is looted from Strange Growth in Maldraxxus.
- Corpselouse Larva and Feasting Larva can both drop from Smorgas the Feaster in Maldraxxus.
- Plaguelouse Larva is a reward/vendor item from a covenant's special feature (Ember Court, Queen's Conservatory etc.)
- The adult have the appearance the same as ranishu from Vol'dun but some are without the periodic lightning appearing between their antennae.
- Their larvae have a resemblance to blood tick larva.