Yponomeutidae

Stephens, 1829

Ermine Moths

Subfamily Guides

Saridoscelinae
Yponomeutinae(ermine moths (subfamily))

, commonly known as , is a of small comprising several hundred with greatest diversity in tropical regions. The family is considered relatively primitive within Lepidoptera and is significant for studies of plant-insect . Larvae are typically gregarious and construct communal silken webs on plants. Some species are minor agricultural, forestry, and horticultural pests. of certain species display striking color patterns of white, orange, and black.

Paraswammerdamia nebulella by (c) Annika Lindqvist, some rights reserved (CC BY), uploaded by Annika Lindqvist. Used under a CC-BY license.

Yponomeutidae by (c) Donald Hobern, some rights reserved (CC BY). Used under a CC-BY license.

Cedestis by (c) Donald Hobern, some rights reserved (CC BY). Used under a CC-BY license.

Images

Habitat

Diverse environments ranging from tropical rainforests to temperate regions; includes forest edges, meadows, gardens, and agricultural areas. Specific associations vary considerably among .

Distribution

distribution with highest in tropical regions. Documented occurrences include North America (including southern USA and Mexico), Central America ( Rica), Europe (Spain, Scandinavia), and Indonesia (South Sumatra).

Seasonality

activity patterns vary by and latitude. In temperate regions, some species appear in late summer and early autumn. Tropical species may have extended or year-round activity periods.

Diet

Larvae feed on diverse woody plants and herbaceous vegetation. Documented plants include members of Simaroubaceae (e.g., Ailanthus altissima, Simarouba glauca) and Brassicaceae (cruciferous vegetables). of some feed on nectar and pollen.

Host Associations

Ailanthus altissima - plant Tree of Heaven; for Atteva aurea larvae
Simarouba glauca - plantNative Paradise tree; for Atteva aurea larvae in Florida
Brassicaceae - plantCruciferous vegetables; plants for Plutella xylostella larvae

Life Cycle

Complete with , larva, pupa, and stages. Larvae typically gregarious, forming communal silken webs. Some temperate undergo seasonal or . Specific details vary considerably among species.

Behavior

Larvae construct and inhabit communal silken webs from which they forage. Some are nectar feeders rather than . Certain exhibit migratory , with adults moving northward seasonally from southern areas.

Ecological Role

Larvae function as herbivores on woody and herbaceous plants. Some may contribute to of plants. of some species serve as minor when feeding on nectar.

Human Relevance

Some are minor pests in agriculture, forestry, and horticulture. Plutella xylostella (diamondback moth) is a serious pest of cruciferous vegetables globally. Atteva aurea (ailanthus webworm) has been considered as a potential agent for Tree of Heaven.