# Waterlily Leafcutter Moth (*elophila obliteralis*) The Waterlily Leafcutter Moth (Elophila obliteralis) is a fascinating aquatic insect renowned for its unique larval stage. Unlike most moths, its caterpillars live underwater, constructing portable cases from pieces of waterlily leaves. This adaptation allows them to feed directly on the submerged and floating leaves of various aquatic plants, making them an intriguing component of freshwater ecosystems. The adult moths, while short-lived, are nocturnal and typically seen fluttering near the water's surface, completing a remarkable life cycle that bridges both aquatic and aerial environments. Their specialized lifestyle highlights the incredible diversity and adaptability found within the insect world, particularly among the Lepidoptera. - **Category:** [Insects](https://www.snappit.app/explore/categories/insect) - **Rarity:** Common - **Danger:** 1/5 · Very low - **Snaps:** 4 - **Habitat:** Found in calm freshwater environments such as ponds, lakes, slow-moving streams, and ditches rich in aquatic vegetation like waterlilies and pondweeds. ![Waterlily Leafcutter Moth](https://inaturalist-open-data.s3.amazonaws.com/photos/377541588/medium.jpg) Photo: Alexis Smith, CC BY 4.0 · [iNaturalist](https://www.inaturalist.org/photos/377541588) ## Appearance The adult Waterlily Leafcutter Moth is a small moth, with a wingspan typically ranging from 1.5 to 2.5 centimeters. Its forewings are predominantly white or cream-colored, often marked with light brown, tan, or golden-yellow patterns, including wavy lines and darker spots that can vary in intensity. The hindwings are generally lighter. When at rest, the wings are held in a triangular shape over its body. The larvae are small, pale green caterpillars that reside within distinctive, silken cases made from circular or oval pieces of host plant leaves, which they carry as they feed. ## Taxonomy - **Kingdom:** Animalia - **Phylum:** Arthropoda - **Class:** Insecta - **Order:** Lepidoptera - **Family:** Crambidae - **Genus:** Elophila ## Interesting facts - Pupation for this moth also occurs underwater; the larva attaches its leaf case to the host plant and forms a silken cocoon within, from which the adult moth later emerges and floats to the surface. - The larvae cut out circular pieces of waterlily leaves to create a portable, protective case that they live inside, moving it around as they feed. - Unlike most caterpillars, the larvae of the Waterlily Leafcutter Moth possess specialized gills, allowing them to breathe and develop entirely underwater. - While generally native to North America, Elophila obliteralis has been introduced to parts of Europe, where it can sometimes become a minor pest in ornamental water gardens due to its feeding habits on waterlilies. ## Special abilities - **Aquatic Case Construction:** Larvae expertly cut sections from host plant leaves and bind them with silk to create a portable, protective case, which they inhabit throughout their underwater development. - **Submerged Respiration:** The larval stage possesses specialized tracheal gills that enable it to breathe efficiently underwater, allowing for extended periods of submerged feeding and development. - **Herbivorous Aquatic Feeding:** The caterpillars are adapted to feed directly on the submerged and floating leaves of aquatic plants, chewing through the plant tissue while remaining protected within their cases. ## Measurements & details - **Length:** 0-1 cm - **Wingspan:** 1-2 cm - **Weight:** 0.0001-0.0002 kg - **Lifespan:** 0 years - **Clutch Size:** 100-300 - **Incubation:** 5-10 days ## Diet & Feeding The larvae of the Waterlily Leafcutter Moth are herbivorous, feeding exclusively on the leaves of various aquatic plants. Adult moths either do not feed or consume only small amounts of nectar. - **Age differences:** Larvae consume aquatic plant leaves; adults are non-feeding or minimally feed on nectar for energy. - **Primary Foods:** Waterlily leaves (Nymphaea species), Pondweed leaves (Potamogeton species), Floating-heart leaves (Nymphoides species), Duckweed (Lemna species) - **Foraging Method:** Grazing ## Ecological connections - **Host plant:** White Waterlily (*Nymphaea alba*) — Primary food source and host plant for larvae. - **Eaten by:** [Largemouth Bass](https://www.snappit.app/explore/largemouth-bass) (*Micropterus salmoides*) — Larvae and pupae are preyed upon by various fish species. - **Eaten by:** Green Darner Larva (*Anax junius*) — Larvae and pupae are consumed by predatory aquatic insect larvae. - **Eaten by:** Mallard (*Anas platyrhynchos*) — Larvae and pupae can be eaten by various waterfowl. ## Safety **Danger:** 1/5 · Very low No special safety notes yet. ## Frequently Asked Questions ### How to identify Waterlily Leafcutter Moth? Compare resting wing shape, forewing markings, antennae and body build. Small brown moths can hinge on fine details a phone photo can't always catch. Moth Identifier: upload a photo and compare the visible details. ### How long is Waterlily Leafcutter Moth? 0-1 cm ### What is Waterlily Leafcutter Moth's wingspan? 1-2 cm ### How much does Waterlily Leafcutter Moth weigh? 0.0001-0.0002 kg ### How long does Waterlily Leafcutter Moth live? 0 years ### What does Waterlily Leafcutter Moth eat? The larvae of the Waterlily Leafcutter Moth are herbivorous, feeding exclusively on the leaves of various aquatic plants. Adult moths either do not feed or consume only small amounts of nectar. ### Where is Waterlily Leafcutter Moth usually found? Found in calm freshwater environments such as ponds, lakes, slow-moving streams, and ditches rich in aquatic vegetation like waterlilies and pondweeds. ### How does Waterlily Leafcutter Moth hunt? Grazing ## Where to spot - [Berry Botanic Garden](https://www.snappit.app/guides/places/berry-botanic-garden) — Oregon, US · Botanical Garden - [Bishop Hill Colony](https://www.snappit.app/guides/places/bishop-hill-colony) — Illinois, US · Historic District - [Lock and Dam No. 17](https://www.snappit.app/guides/places/lock-and-dam-no-17) — Illinois, US · Historic Site [View all places to see Waterlily Leafcutter Moth](https://www.snappit.app/guides/where-to-see/waterlily-leafcutter-moth) ## 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: [Waterlily Leafcutter Moth: Facts & Places to See — Snappit](https://www.snappit.app/explore/waterlily-leafcutter-moth)