Megalopyge lapena

Megalopyge lapena · Order: Lepidoptera · Family: Megalopygidae

No source yet on danger. We have no source yet on whether it bites, stings or damages anything.
Megalopyge lapena
Photo: Sue Carnahan, CC BY

The moth has a wingspan of about 35 mm. Its forewings are very pale brownish-grey, becoming whiter beyond the cell and near the outer margin, with a small reddish-brown spot at the end of the cell and a larger reddish-brown spot of long crinkly scales below the median vein; the hindwings and underside are yellowish-white. It occurs in Mexico and the southern part of Arizona.

Source: Wikipedia

How to recognize it

Forewings are very pale brownish-grey, turning whiter beyond the cell and near the outer margin. A small reddish-brown spot sits at the end of the cell, and a larger reddish-brown spot of long crinkly scales lies below the median vein. Hindwings and the underside are yellowish-white.

Source: Wikipedia

Size

The wingspan measures roughly 35 mm.

Source: Wikipedia

Where it is found in the US

Recorded in 2 of 51 states and DC. Most records: Arizona, Florida.

Darker = more records. Counts are museum and citizen-science records, not population size.

Source: GBIF

Months it is reported in the US

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Source: GBIF

More photos

Questions people ask

Where is Megalopyge lapena found?

It occurs in Mexico and the southern part of Arizona.

Source: Wikipedia

Same family (Megalopygidae)

Sources

  • Wikipedia: https://en.wikipedia.org/wiki/Megalopyge_lapena

Look it up elsewhere: GBIF · iNaturalist · BugGuide · Wikipedia

Text written 2026-10-28 from the sources above and checked sentence by sentence against them. Data fetched 2026-10-28.

How this page works

This is one bug's fact sheet. The colored box at the top says whether it is dangerous. Sections below cover how to recognize it, whether it is a pest, and how to deal with it. The US map shows which states have records; tap a state to see other bugs there.

Every fact on Bug FAQ comes from a named source (university extension sites, government agencies, GBIF, iNaturalist, Wikipedia). The source is linked next to each section. If we have no source for something, we leave it out.