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Creatures in "Giant Insect" Category

Giant Fly1
Giant Maggot1/2

Giant Insect, Giant Fly

Scraping its barbed forelimbs across its head’s filth-encrusted hairs, this gigantic fly stares mindlessly with terrible multifaceted eyes. It moves in jerks and twitches, wings buzzing unnervingly as it dances in anticipation of impending corpses to feed upon.

Giant Fly CR 1

Source Pathfinder #8: Seven Days to the Grave pg. 84
Always N Medium vermin
Init +3; Senses darkvision 60 ft.; Listen -2, Spot +2


AC 13, touch 13, flat-footed 10 (+3 Dex)
hp 15 (2d8+6)
Fort +6, Ref +3, Will -2
Immune disease, mind-affecting effects


Speed 20 ft., climb 20 ft., fly 60 ft. (good)
Melee bite +2 (1d6 plus disease)
Special Attacks disease


Str 12, Dex 17, Con 16, Int —, Wis 7, Cha 2
Base Atk +1; Grapple +2
Skills Spot +2, Survival -2 (+2 to orient itself); Racial Modifiers +4 Spot, +4 Survival (to orient themselves)
SQ disease carrier


Environment temperate or tropical marshes
Organization solitary or swarm (5-20)
Treasure none
Advancement 3-5 HD (Medium), 6-11 HD (Large), 12-20 HD (Huge)

Special Abilities

Disease Carrier (Ex) Although giant flies are immune to disease, they become carriers of any contact or injury disease they are exposed to. They do not suffer the effects of the disease, but they can pass it on to any creature they bite. All giant flies have a disease randomly determined by rolling 1d6 on the following chart. See page 292 of the DMG and “Plague and Pestilence” in this volume for more details on the following diseases.
3Bonecrusher fever
4Sleeping sickness
5Slimy doom
6Filth fever


Grown to monstrous size within the fetid bowels of Golarion’s most disgusting swamps, giant flies—and their monstrously bloated maggot young—reach sizes of up to 7 feet from their barbed rear legs to their filthsucking proboscises. Although dozens of different types of monstrous flies have been recorded, the most common of Avistan’s varieties appear as gigantic, bloodthirsty gadflies. The sickening drone of these disgusting vermin’s flight taints the air as they circle sites of carnage and decay in search of smaller prey and spilled blood.

Variant Giant Flies

Although each of the thousand species of flies do not have their own monstrous counterparts, there are still a number of regional variations between types of giant fly. Listed below are three of the more common ones.

Giant Housefly: Where the giant gadfly uses scissorlike mouthparts to obtain its liquid meal, the giant housefly dissolves its food by retching an acidic slurry over its meal and lapping up the dissolved nutrients. These giant flies are in all ways exactly like the typical version, but their bite attacks deal an additional 1d4 points of acid damage.

Giant Hoverfly: As their name suggests, giant hoverflies have great control over their aerial movement, having a flight speed of 70 feet and perfect maneuverability. Most giant hoverflies resemble giant wasps or bees, but are typically less deadly than those overgrown pests.

Giant Tsetse Fly: With long legs and a pronounced proboscis, the giant brown tsetse fly can be found in various tropical regions, particularly throughout the southern Mwangi Expanse. These bloated, mosquito-like vermin spread only sleeping sickness with their bites, although—like typical giant flies—they might spread other diseases as well.