Cryptachaea rupicola
(Emerton, 1882)
Cryptachaea rupicola is a cobweb in the Theridiidae, first described by Emerton in 1882. The occurs in the United States and Canada. As a member of Theridiidae, it constructs irregular, three-dimensional webs. Very little detailed information about its biology, , or specific requirements has been documented.

Pronunciation
How to pronounce Cryptachaea rupicola: //ˌkrɪptəˈkiːə ˌruːpɪˈkoʊlə//
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Identification
Specific diagnostic features distinguishing Cryptachaea rupicola from are not documented in available sources. The Cryptachaea was established relatively recently, with many transferred from the related genus Achaearanea; accurate identification likely requires examination of and comparison with .
Images
Distribution
United States and Canada. GBIF records confirm presence in North America with distribution limited to these two countries.
Behavior
As a theridiid , it has been observed constructing cobweb-style webs, though specific behavioral details for this are not documented.
Similar Taxa
- Cryptachaea porteriFormerly classified in the same Achaearanea; both are small theridiids with similar body plans and overlapping North ranges, requiring careful examination to distinguish
- Parasteatoda tepidariorumCommon North theridiid with similar cobweb-building and general ; differs in web architecture and abdominal patterning
More Details
Taxonomic history
This was originally described by James Henry Emerton in 1882. The Cryptachaea was established to accommodate species previously placed in Achaearanea, reflecting revised understanding of theridiid .