Giant fly

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Giant Fly
Giant Fly & Maggot
Type Vermin
CR 1
Environment Any temperate or tropical
Images of giant flies

Source: Bestiary 2, pg(s). 124
Giant botfly
Type Vermin
Environment Warm jungle

Source: Heart of the Jungle, pg(s). 59
Botfly swarm
Type Vermin
CR 4
Environment Warm jungles and swamps

Source: Heart of the Jungle, pg(s). 59

Giant flies, unlike their lesser cousins, are voracious predators capable of bringing down large prey. Mindless in their pursuit of sustenance, these monstrous vermin attack anything they perceive as food.[1]


Giant flies reach sizes up to 7 feet in length. However, if not for their size they could be mistaken for common gadflies. Their bodies are covered in short black fur and they perceive the world through large, multifaceted eyes.[1][2]

Giant maggots, the larval stage of this vermin, grow and attain similar lengths before emerging as adults. These young, white in color, possess mouths filled with rows of ridges capable of overcoming even toughened and durable flesh. Like the adults, giant maggots are active predators.[1][2]


Giant flies and their young are capable physical predators. In addition, they often carry diseases which can be passed on to other creatures.[2]


Mindless in their motivation, giant flies instinctually live to feed and breed. Giant maggots hatch in clutches of hundreds, and reach maturity over a length of two to three weeks. They can be found in areas of large-scale decay and disease, including some of the more inhospitable regions of the Outer Planes.[1]

Variant giant flies

As seen among their lesser cousins, variants of the basic giant fly do exist.[1]

Giant botfly
Giant botflies are native to the Mwangi Expanse, where they lay their eggs in victims both alive and dead.[3]
Botfly swarm
Although not nearly as big as their giant cousins, normal botflies can form enormous swarms that infest hosts with their larvae and spread disease.[3]
Giant housefly
In many ways similar to the more common variety of giant fly, giant house flies feed by dissolving food in acid before ingesting what remains.[1]
Giant hoverfly
Similar to giant bees or wasps in appearance, giant hoverflies possess a greater ability to control their motion while in flight than that of other varieties.[1]
Giant tsetse fly
Found primarily in tropical regions, giant tsetse flies resemble bloated mosquitoes. Their bites are known to transmit sleeping sickness to those who survive such an attack.[1]


  1. 1.0 1.1 1.2 1.3 1.4 1.5 1.6 1.7 Sean K Reynolds, & F. Wesley Schneider. (2008). Bestiary. Seven Days to the Grave, p. 85. Paizo Publishing, LLC. ISBN 978-1-60125-091-9
  2. 2.0 2.1 2.2 Sean K Reynolds, & F. Wesley Schneider. (2008). Bestiary. Seven Days to the Grave, p. 84. Paizo Publishing, LLC. ISBN 978-1-60125-091-9
  3. 3.0 3.1 Tim Hitchcock et al. (2010). Heart of the Jungle, p. 59. Paizo Publishing, LLC. ISBN 978-1-60125-247-0