Trombicula

A genus of mites whose larvae are pests of humans and other animals and that includes species that are agents of transmission for tsutsugamushi disease.

A genus of mites (family Trombiculidae), whose larvae are parasitic on all animal species and cause dermatitis. Some also transmit diseases from their natural hosts rodents to humans, e.g. scrub typhus. The larvae are also called chiggers.

• T. akamushi — transmits scrub typhus of humans.
• T. alfreddugesi — see eutrombicula alfreddugesi.
• T. autumnalis — distinctively red mite found on all domestic animal species including poultry. Attacks humans. It causes dermatitis, e.g. between dog's claws and on the heels of horses. Called also harvest mite, aoutat, lepte automnale.
• T. batatas — causes dermatitis.
• T. delhiensis — transmits scrub typhus of humans from rodents.
• T. minor — the scrub-itch mite.
• T. sarcina — see eutrombicula sarcina.
• T. spendens — causes dermatitis.

The noun has one meaning:

Meaning #1: type genus of the family Trombiculidae
  Synonym: genus Trombicula