Antrodiaetus lincolnianus

(Worley, 1928)

Lincoln's folding-door spider

Antrodiaetus lincolnianus is a of folding-door in the Antrodiaetidae, originally described as Brachybothrium lincolnianum by Worley in 1928. As a mygalomorph spider, it constructs a burrow sealed with a hinged, silken door that it uses for protection and ambush . The species is to the United States. Like other members of the Antrodiaetus unicolor , it has been subject to recent taxonomic revision using molecular methods due to cryptic morphological similarity with closely related species.

Pronunciation

How to pronounce Antrodiaetus lincolnianus: /æntrəˈdaɪətəs ˌlɪŋkəlˈniːənəs/

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Identification

Distinguishing A. lincolnianus from other Antrodiaetus requires careful examination, as members of the A. unicolor are morphologically cryptic and often indistinguishable by traditional morphological characters alone. The species was originally described based on specimens from Lincoln County, Oregon, but its precise diagnostic features relative to other Antrodiaetus species remain poorly documented in accessible literature. Molecular data (COI and 28S markers) have been used to delineate species boundaries within this complex.

Habitat

Burrowing that constructs -lined tunnels with folding doors in suitable substrates; specific microhabitat preferences for A. lincolnianus are not well documented.

Distribution

United States; specifically known from Lincoln County, Oregon based on original description. GBIF records confirm presence in USA.

Behavior

Constructs and maintains a burrow with a hinged, silken folding door that serves as both protection and an ambush hunting platform. This is characteristic of the Antrodiaetidae, though specific behavioral details for A. lincolnianus have not been independently documented.

Ecological Role

As a burrowing mygalomorph , likely functions as a of soil-dwelling and contributes to soil aeration through burrowing activity.

Similar Taxa

Antrodiaetus unicolorMember of the same ; morphologically indistinguishable without molecular analysis
Antrodiaetus microunicolor in the A. unicolor complex; distinguished by non-overlapping mating seasons and subtle morphological differences in related