Bicolored webspinner

Haploembia solieri · Order: Embioptera · Family: Oligotomidae

Also called: Webspinner

No source yet on danger. We have no source yet on whether it bites, stings or damages anything.
Bicolored webspinner
Photo: Don Loarie, CC BY

Adult bicolored webspinners are orange and black in color. They grow to about 11 mm long. They occur in Europe, northern Asia (except China), and North America.

Source: Wikipedia

How to recognize it

Adults are orange and black.

Source: Wikipedia

Size

Adults are roughly 11 mm long.

Source: Wikipedia

Where it is found in the US

Recorded in 5 of 51 states and DC. Most records: California, Oregon, New Mexico, Texas, Washington.

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

Source: GBIF

Status: introduced in North America; introduced in United States. Source: iNaturalist

Months it is reported in the US

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Source: GBIF

More photos

Bicolored webspinner photo 3
Photo: Ken-ichi Ueda, CC BY
Bicolored webspinner photo 4
Photo: Chaym Turak, CC BY-SA
Bicolored webspinner photo 5
Photo: nmoorhatch, CC BY
Bicolored webspinner photo 6
Photo: TonyT, CC BY

Same family (Oligotomidae)

Black WebspinnerBlack WebspinnerOligotoma nigraSaunders' WebspinnerSaunders' WebspinnerOligotoma saundersiiAposthonia gurneyiAposthonia gurneyiAposthonia gurneyi

Sources

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

Look it up elsewhere: GBIF · iNaturalist · BugGuide · ITIS · 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.