Straelensia spp

From Dog
Adult Straelensia cynotis[1]

Straelensia spp ('chigger mites') are a parasitic mite of dogs that causes the skin disease known as trombiculosis.

This trombidioid larval mite mite resides in the hair follicles of dogs, and has been reported in France. Foxes are considered to be the natural host for the larval stage, and dogs a permissive but occasional host.

Pathogenic species include:

  • Straelensia cynotis[2]

Clinically affected dogs displayed scattered, small (1 to 3 mm in diameter), pale, firm skin nodules, variable in distribution but always affecting the dorsal regions of the head and trunk. In some dogs, they can be distributed over the whole body.

Treatment is usually effective with parenteral ivermectin[3].

Diagnosis is based on clinical signs and identification of the parasite in the dermis obtained from skin scrapings.

Treatment is usually effective with fipronil or ivermectin.

Symptomatic treatment may be required in cases of severe pruritus.


  1. ilbeccolungo
  2. Le Net JL et al (2002) Straelensiosis in dogs: a newly described nodular dermatitis induced by Straelensia cynotis. Vet Rec 150(7):205-209
  3. Ramírez GA et al (2009) Clinical, histopathological and epidemiological study of canine straelensiosis in the Iberian Peninsula (2003-2007). Vet Dermatol 20(1):35-41