Table 2.

Ecological classification of myiasis

Ecological classification	Description
Specific/obligatory	Parasite dependent on host for part of its life cycle
Semispecific/facultative
Primary	Free living and may initiate myiasis
Secondary	Free living and unable to initiate myiasis; may be involved once animal is infested by other species
Tertiary	Free living and unable to initiate myiasis; may be involved when host is near death
Accidental/pseudomyiasis	Free-living larva and not able to complete its life cycle; causes pathological reaction when accidentally in contact with the host