Taxonomy: f. Oestridae
Animal: Dermatobia hominis 5 21.jpg
Sites: Skin
Dermatobia hominis (bot or warble fly) cross section through the posterior spiracles of a lava (maggot) which was embedded in the skin of a South American tourist. When the adult lands on a warm blooded host, she lays egg. The young larvae emerge from the egg and tunnel perpendicularly into the skin forming a nodule or warble. Eventually local tissue destruction and toxic waste produce throbbing pain and intense itching. A composite of morphological features, the lesion and the patient history led to the diagnosis. The maggots are different from other parasites in skin in that the tegument may be sclerotised with cuticulised spines and hooks of characteristic size, shape and spacing , the muscles are striated, presence of tracheae as seen in slides 5.21-5.24b. The maggot stage of these bot flies feed on dead or living tissues and are a serious pest of cattle and as seen here occasionally in humans, particularly in Central and South America.

First Picture | Previous Picture | Next Picture | Last Picture