Ermine moth

The family Yponomeutidae are known as the ermine moths, with several hundred species, most of them in the tropics. The larvae tend to form communal webs,[1] and some are minor pests in agriculture, forestry, and horticulture. Some of the adults are very attractive. Adult moths are minor pollinators.

Certain members of the unrelated snout moths (Pyralidae) are also known as "ermine moths".

Ermine moth
Yponomeuta evonymella
Communal larval web
Scientific classification
Kingdom: Animalia
Phylum: Arthropoda
Class: Insecta
Order: Lepidoptera
Superfamily: Yponomeutoidea
Family: Yponomeutidae
Stephens, 1829
Diversity
600 species

There are five or six subfamilies. Some authors also include the closely related Plutellidae as yet another subfamily:

Subfamilies

The following genera do not have assigned subfamilies available:

Characteristics
Larvae of Ermine moths at the bottom of their cocoon

Ermine moths are small to medium-sized moths varying in wingspan from 8 to 31 mm (0.3 to 1.2 in). The heads mostly have smooth scales, the haustellum is naked and the labial palps are curved upwards. The maxillary palps usually consist of one or two segments. The wings are long, often with fringes on the trailing edges of the hindwings. The colour is usually white, pale grey or drab, often with many dark speckles.[2]

Adult ermine moths are mostly nocturnal.

The larvae are leaf-webbers, leaf skeletonizers, leafminers or needleminers and are found on a variety of host plants. Some cause economic damage to crops and trees.[2]

Species (selection)

Better-known species include:

Etymology

The word Yponomeutidae comes from the Ancient Greek ὑπό (ypo) meaning under and νομός (nomós) meaning food or dwelling, thus "feeding secretly, or burrow".[3]

gollark: Basicallyscore = views + unique views * 6 + clicks * 12if hatchling, optimal score is 13000 at 4d and 5000 at 7d (between the two extremes, it's averaged)if egg, optimal score is 5000 at 4d and 0 at 7d (averaged again)it's safeish if the score is less than 1.5x the optimal score.
gollark: ```javascriptfunction getScore(dragon) { return dragon.views + (dragon.uniqueViews * 6) + (dragon.clicks * 12);}const nextStageAge = 72;const maxTime = 168;function getOptimalScore(dragon) { const time = dragon.hoursRemaining; const age = maxTime - time; if (dragon.type == "hatchling") { return 5000 + (8000 * (age / nextStageAge)); } else { return 5000 * (age / nextStageAge); }}function getScoreRatio(dragon) { return getScore(dragon) / getOptimalScore(dragon);}function isSafe(dragon) { return getScoreRatio(dragon) < 1.5;}```
gollark: I guess that since I'm banned anyway I might as well show my modified EATW formula...
gollark: I mean, it'd be hard to viewbomb something that old.
gollark: It's basically politics in a dictatorship.

References
  1. "The very hungry caterpillars: Thousands of moth larvae weave giant web over shrubbery to protect themselves and more importantly, their food, from predators". Daily Mail Online. Retrieved 22 September 2014.
  2. Capinera, John L. (2008). Encyclopedia of Entomology. Springer Science & Business Media. pp. 1360–1361. ISBN 978-1-4020-6242-1.
  3. Westwood, J. O. (October 1837). Loudon, John Claudius (ed.). "A series of Articles on the Insects most Injurious to Cultivators -- No. 8. The small Ermine Moth". The Gardener's magazine and register of rural and domestic improvement. 13: 434.
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