# Fingernet Caddisflies (*Philopotamidae*) Fingernet Caddisflies are tiny insects that make beautiful nets out of silk to catch food. They live in water and are great at hiding among rocks and plants. - **Category:** [Insects](https://www.snappit.app/explore/categories/insect) - **Rarity:** Common - **Danger:** 1/5 · Very low - **Habitat:** Freshwater streams ![Fingernet Caddisflies](https://commons.wikimedia.org/w/index.php?title=Special:Redirect/file/Philopotamidae_Notch.jpg&width=800) Photo: Erin Hayes-Pontius, CC BY-SA 3.0 · [Wikimedia Commons](https://commons.wikimedia.org/wiki/File:Philopotamidae_Notch.jpg) ## Appearance The Fingernet Caddisflies has drab, moth-like adults with hairy wings held like a tent over their bodies. They are typically brown, gray, or black, often with patterned wings. Their long antennae are a key feature, helping distinguish them from true moths. ## Taxonomy - **Kingdom:** Animalia - **Phylum:** Arthropoda - **Class:** Insecta - **Order:** Trichoptera - **Family:** Philopotamidae ## Interesting facts - Adult caddisflies often have fuzzy antennae, helping them smell and navigate in the dark! - Caddisfly larvae use silk, like spiders, to build their amazing underwater structures! - Many adult caddisflies live for only a few days, spending most of their life as aquatic larvae. - The larvae build their tiny nets in fast-moving water, like minuscule underwater fishing traps! ## Special abilities - **Underwater Architects:** Fingernet Caddisflies can spin intricate silken nets underwater because this helps them capture tiny food particles flowing past. - **Nature's Filter Feeders:** Fingernet Caddisflies has specialized mouthparts that help them filter algae and detritus from moving water with their nets. - **Clean Water Checkers:** Fingernet Caddisflies can only thrive in clean, flowing water because this helps scientists know when water is healthy. ## Measurements & details - **Wingspan:** 10-30 mm - **Size:** 5-20 mm - **Lifespan:** 7-30 days - **Leg Count:** 6 ## Diet & Feeding Fingernet Caddisfly larvae are expert filter-feeders, catching tiny bits of food from the water. - **Age differences:** Larvae actively filter-feed; adults often do not feed or consume only nectar/water. - **Primary Foods:** algae, detritus, small organic particles - **Foraging Method:** Filter feeding ## Ecological connections - **Eaten by:** [Brown Trout](https://www.snappit.app/explore/brown-trout) (*Salmo trutta*) — eats larvae and adults from the water - **Eaten by:** Eurasian Dipper (*Cinclus cinclus*) — eats aquatic larvae and pupae from streams - **Hunts:** Large Stonefly (*Perla grandis*) — larvae hunt other smaller aquatic insects ## Traits - [Solitary](https://www.snappit.app/explore/traits/solitary): Solitary animals live alone for most of their lives, only interacting with others for mating or parental care. - [Web Builder](https://www.snappit.app/explore/traits/web-builder): This trait characterizes organisms that construct elaborate silken webs for catching prey, shelter, or reproduction. - [Camouflaged](https://www.snappit.app/explore/traits/camouflaged): Camouflaged describes organisms that possess coloring or patterns that allow them to blend into their environment. - [Filter Feeder](https://www.snappit.app/explore/traits/filter-feeder): Filter feeders obtain nutrients by straining suspended food particles and small organisms from water. - [Insectivorous](https://www.snappit.app/explore/traits/insectivorous): This trait identifies organisms whose diet primarily consists of insects and other small invertebrates. - [Freshwater](https://www.snappit.app/explore/traits/freshwater): Freshwater habitats include non-saline aquatic environments such as rivers, lakes, ponds, and wetlands, vital for numerous species. - [Miniature](https://www.snappit.app/explore/traits/miniature): Pertaining to species that are significantly smaller than typical or average for their kind. - [Aquatic](https://www.snappit.app/explore/traits/aquatic): Aquatic habitats encompass environments where organisms live predominantly in water, including oceans, rivers, lakes, and wetlands. - [Pollinator](https://www.snappit.app/explore/traits/pollinator): Describes organisms that transfer pollen, enabling the fertilization and reproduction of plants. ## Collections - [Insects](https://www.snappit.app/explore/collections/insects) ## Safety **Danger:** 1/5 · Very low Always wash your hands after playing near water to stay clean and healthy. ## Frequently Asked Questions ### How to identify Fingernet Caddisflies? Look for six legs, antennae, three body sections and the shape of the wings. Beetles have hardened front wings; flies have just one working pair. Tiny insects may need a close view before their group is clear. Insect Identifier: upload a photo and compare the visible details. ### What is Fingernet Caddisflies's wingspan? 10-30 mm ### How big is Fingernet Caddisflies? 5-20 mm ### How long does Fingernet Caddisflies live? 7-30 days ### What does Fingernet Caddisflies eat? Fingernet Caddisfly larvae are expert filter-feeders, catching tiny bits of food from the water. ### Where is Fingernet Caddisflies usually found? Freshwater streams ### How does Fingernet Caddisflies hunt? Filter feeding ### How many legs does Fingernet Caddisflies have? 6 ## More Insects - [Common Eastern Bumble Bee](https://www.snappit.app/explore/common-eastern-bumble-bee) (*Bombus impatiens*) - [Spotted Lanternfly](https://www.snappit.app/explore/spotted-lanternfly) (*Lycorma delicatula*) - [Brown-belted Bumble Bee](https://www.snappit.app/explore/brown-belted-bumble-bee) (*Bombus griseocollis*) - [Eastern Carpenter Bee](https://www.snappit.app/explore/eastern-carpenter-bee) (*Xylocopa virginica*) --- Source: [Fingernet Caddisflies: Facts & Places to See — Snappit](https://www.snappit.app/explore/fingernet-caddisflies)