Glover's Silkmoth

Hyalophora gloveri · Order: Lepidoptera · Family: Saturniidae

Also called: Glover's Silk Moth

No source yet on danger. We have no source yet on whether it bites, stings or damages anything.
Glover's Silkmoth
Photo: Colin Croft, CC BY

The adult has a wingspan of about 10 cm. It lives in the Rocky Mountains, the western Great Plains, the Canadian prairie provinces up to central Alberta, and northern Mexico. Some experts treat it as a subspecies of Hyalophora columbia.

Source: Wikipedia

Size

Wingspan is roughly 100 mm.

Source: Wikipedia

Where it lives

Found in Rocky Mountain states, western northern Great Plains, Canadian prairie provinces to central Alberta, and northern Mexico.

Source: Wikipedia

Where it is found in the US

Recorded in 22 of 51 states and DC. Most records: Colorado, Arizona, Utah, New Mexico, Montana, Wyoming, California, Idaho.

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

Source: GBIF

Status: native in North America; native in Canada; native in United States. Source: iNaturalist

Months it is reported in the US

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Source: GBIF

More photos

Questions people ask

How large is Glover's Silkmoth?

The adult’s wingspan is about 10 cm.

Source: Wikipedia

Where can I find Glover's Silkmoth?

It occurs in the Rocky Mountain states, the western northern Great Plains, the Canadian prairie provinces up to central Alberta, and northern Mexico.

Source: Wikipedia

Is Glover's Silkmoth similar to any other moth?

Some experts treat it as a subspecies of Hyalophora columbia.

Source: Wikipedia

Same family (Saturniidae)

Sources

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

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

Text written 2026-10-23 from the sources above and checked sentence by sentence against them. Data fetched 2026-10-23.

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.