Toadlike Bolas Spider

Mastophora phrynosoma · Order: Araneae · Family: Araneidae

No source yet on danger. We have no source yet on whether it bites, stings or damages anything.
Toadlike Bolas Spider
Photo: Judy Gallagher, CC BY

Adult female Toadlike Bolas Spiders catch prey with one or more sticky drops on a silk line, while males and juvenile females grab prey with their legs. The species lives in the United States. It belongs to the orb-weaver family Araneidae.

Source: Wikipedia

How to recognize it

Mastophora phrynosoma is an orb-weaver spider in the family Araneidae.

Source: Wikipedia

Where it lives

It is found in the United States.

Source: Wikipedia

What it eats

Adult females capture prey with sticky drops on a silk line, a method called bolas. Males and juvenile females catch prey directly with their legs.

Source: Wikipedia

Life cycle

Adult females use the bolas hunting technique. Males and juvenile females capture prey with their legs.

Source: Wikipedia

Where it comes from

Its native range is the United States.

Source: Wikipedia

Where it is found in the US

Recorded in 26 of 51 states and DC. Most records: Ohio, Maryland, Virginia, Pennsylvania, Missouri, New York, New Jersey, North Carolina.

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

How does the Toadlike Bolas Spider catch its prey?

Adult females swing a silk line with sticky drops to snag insects, while males and young females grab prey with their legs.

Source: Wikipedia

Where is this spider found?

It occurs in the United States.

Source: Wikipedia

What family does this spider belong to?

It is an orb-weaver in the family Araneidae.

Source: Wikipedia

Same family (Araneidae)

Sources

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

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

Text written 2026-10-26 from the sources above and checked sentence by sentence against them. Data fetched 2026-10-26.

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.