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Myiasis
[Cochliomyia hominovorax] [Dermatobia hominis] [Cuterebra spp.] [Oestrus ovis] [Cordylobia anthropophaga] [Phaenicia spp.] [Phormia regina]

Members of the genus Phaenicia are also agents of facultative myiasis in humans, whereby adult flies lay eggs in pre-existing, festering wounds.  Unlike other agents of myiasis, they do not invade healthy, living tissue.  Larvae are characterized by a complete peritreme, three straight slits in each posterior spiracle, and mandibles without an accessory sclerite.

Phaenicia mouthparts Phaenicia posterior
A B

A: Mouthparts of Phaenicia sp., removed from a surgical wound of a patient.  Image courtesy of the Washington State Public Health Laboratories.
B: Posterior end of the specimen in Figure A.

Phaenicia posterior spiracles Phaenicia posterior spiracles
C D

C, D: Posterior spiracles of the specimen in Figure A.  Notice the three, straight slits and a complete peritreme that is not very thick.

 

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