Euryopis texana
Banks, 1908
Euryopis texana is a small cobweb spider in the Theridiidae, Hadrotarsinae. It belongs to a of - that hunt without building prey-catching webs. The occurs in the United States and Mexico. Like other Euryopis, it likely employs a distinctive hunting strategy of ambushing ants and immobilizing them with silk before delivering a venomous bite.
Pronunciation
How to pronounce Euryopis texana: /ˌjʊriˈoʊpɪs tɛkˈsænə/
These audio files are automatically generated. While they are not always 100% accurate, they are a good starting point.
Identification
Distinguished from other Theridiidae by absence of prey-catching web, high , long flat fangs, and sub-triangular . Separation from other Euryopis requires examination of genitalia and other subtle morphological characters not documented in available sources.
Habitat
Specific preferences for E. texana not documented. Related Euryopis occur on ground, foliage, and tree trunks in areas with high activity, including around ant mounds.
Distribution
Recorded from the United States and Mexico. GBIF records indicate presence in North America and Middle America.
Diet
Ants. The Euryopis is specialized for , with at least some feeding almost exclusively on harvester ants (Pogonomyrmex). Specific ant prey for E. texana not documented.
Life Cycle
Female produces white, hemispherical sac covered in silk tufts. Other details not documented for this .
Behavior
Ambush of ants. Sits with legs outstretched and waits for to brush against it. Upon contact, rapidly circles the ant while flinging silk to bond it to the substrate. Bites immobilized prey, usually on a leg joint, then fashions a silk sling to haul the victim to a secure feeding location. Does not build prey-catching webs.
Ecological Role
, specifically an . By preying on ants—including aggressive, stinging like harvester ants—Euryopis spiders occupy a distinctive predatory with few competitors.
Human Relevance
No documented economic or medical importance. Bites to humans not reported. Likely overlooked due to small size.
Similar Taxa
More Details
Taxonomic placement
Euryopis texana is placed in Hadrotarsinae based on morphological characters including high , long flat fangs, female genitalia anatomy, and absence of prey-catching webs.