True Flies

"Strepsiptera: The Hidden World of Twisted-Winged Parasites and Their Global Impact"

Latin: StrepsipteraFly Fishing Connection?

Strepsiptera, or twisted-winged parasites, are enigmatic insects with reduced wings, notorious for their bizarre parasitic life cycle targeting other insects.

Global Hotspots for Twisted-Winged Parasites
Explore this interactive map to uncover sightings of Strepsiptera worldwide, revealing their widespread yet often overlooked distribution. While this insect class encompasses hundreds of species across diverse families, their elusive nature makes them a rare find.

Diversity & Global Spread
With roughly 600 known species, Strepsiptera exhibit a fascinating parasitic lifestyle. Males flaunt twisted wings, while females live hidden inside their hosts. Key families like Stylopidae, Mengenillidae, and Corioxenidae thrive across continents—from the Americas to Australia—occupying forests, grasslands, and even urban zones where they infiltrate unsuspecting insect hosts.

The Bizarre Life Cycle of Strepsiptera
A tale of two fates: Females remain trapped inside hosts as endoparasites, while males break free as short-lived adults. Their four-stage life cycle (egg, larva, pupa, adult) adapts to environmental cues like temperature and host availability. First-instar larvae aggressively hunt hosts—bees, wasps, or grasshoppers—before burrowing inside to feed and mature. Males eventually emerge, but females stay forever bound to their hosts.

"Strepsiptera: The Hidden World of Twisted-Winged Parasites and Their Global Impact"

Why Fly Fishers Need Not Worry
Despite their intrigue, Strepsiptera play no role in fly fishing. These parasites target insects, not fish, and their life cycle keeps them out of aquatic ecosystems. With minimal presence in water and no appeal as fish prey, they remain a curious oddity—not a fishing concern.

"Silk-Weaving Secrets: The Hidden World of Webspinners and Their Surprising Fly Fishing Connection"

Latin: Embioptera — A Niche Player in Fly Fishing

Webspinners are tiny, silk-spinning insects that craft elaborate web-like shelters using silk glands in their front legs.

Global Hotspots: Where to Find Webspinners
This map highlights sightings of Webspinners worldwide, revealing their widespread yet patchy distribution. Keep in mind that this insect order encompasses multiple families and hundreds of species, each with unique habitats.

Diversity & Global Spread
The Embioptera order, or webspinners, is a lesser-known group of around 400 species, distinguished by their slender bodies, oversized front legs, and remarkable silk-producing skills. Key families include Embiidae, Oligotomidae, and Clothodidae.

These insects thrive in tropical and subtropical zones, with populations scattered across the Americas, Africa, Asia, and Australia. They adapt to diverse settings—forests, grasslands, and even urban spaces—often hiding in rock crevices, under bark, or within leaf litter.

From Egg to Adult: The Webspinner Life Cycle

"Silk-Weaving Secrets: The Hidden World of Webspinners and Their Surprising Fly Fishing Connection"

Webspinners progress through three phases: egg, nymph, and adult. Females deposit eggs inside their silk tunnels, shielding their young from predators. Nymphs resemble miniature adults but lack wings, molting several times before maturity. Adults remain in their silken homes, feeding on decaying plant matter and fungi.

Do Webspinners Matter in Fly Fishing?
While not a staple in fish diets, webspinners near water bodies in warm climates may occasionally attract fish. If you’re fishing in tropical regions, check with local experts to see if an Embioptera-inspired fly pattern could be useful.