Eustala rosae

Chamberlin & Ivie, 1935

Eustala rosae is a of orb-weaver spider in the Araneidae, first described by Chamberlin and Ivie in 1935. It is known from the United States and Mexico. As a member of the Eustala, it constructs spiral wheel-shaped webs typical of the family. Information regarding its specific , preferences, and ecological relationships remains limited in published literature.

Pronunciation

How to pronounce Eustala rosae: /juːˈstɑːlə ˈroʊzaɪ/

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Identification

Eustala rosae can be distinguished from by examination of genitalia, particularly the in females and in males. Within the Eustala, -level identification typically requires microscopic examination of these structures. The species lacks distinctive coloration or body form that would allow reliable field identification without specimen collection and detailed morphological study.

Distribution

Found in the United States and Mexico. GBIF records indicate presence in Middle America and North America.

Similar Taxa

Eustala anasteraBoth are North American Eustala , but E. anastera is known to inhabit acacia plants defended by colonies in Panama and has been documented as prey for the spider wasp Caliadurgus hyalinatus. E. rosae lacks these documented associations.
Eustala oblongaBoth are orb-weavers in the same , but E. oblonga is specifically associated with myrmecophytic acacias (Vachellia melanocerus) and their mutualists (Pseudomyrmex satanicus) in Panama. No such specialized ant-plant association has been documented for E. rosae.

More Details

Taxonomic history

The was formally described by Chamberlin and Ivie in 1935. It has been consistently classified within the Araneidae, though detailed revisionary work on the Eustala remains limited.

Data availability

As of 2024, the has relatively few documented observations (31 records on iNaturalist), suggesting it may be genuinely uncommon, undercollected, or restricted to specific that are infrequently surveyed.