Trogloneta paradoxa

Gertsch, 1960

Trogloneta paradoxa is a minute in the Mysmenidae, first described by Gertsch in 1960. Members of this family are among the smallest spiders known, with body lengths typically under 2 mm. The Trogloneta is characterized by a distinctive body shape featuring a disproportionately large, spherical relative to the . The specific epithet "paradoxa" likely refers to this unusual . The species is known from the United States.

Trogloneta paradoxa by (c) Toby, some rights reserved (CC BY), uploaded by Toby. Used under a CC-BY license.

Pronunciation

How to pronounce Trogloneta paradoxa: //ˌtrɒɡloʊˈniːtə ˌpærəˈdɒksə//

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Identification

Distinguished from other mysmenid by the combination of minute size and the characteristic Trogloneta body form with enlarged spherical . Separation from congeneric requires examination of genitalic structures and other fine morphological details. The species is distinguished from T. yuensis (described 2013 from China) by geographic distribution and presumably by subtle morphological differences in and , though direct comparison details are not fully documented in available literature.

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Habitat

Specific details for T. paradoxa are not documented. Based on -level characteristics, mysmenids inhabit moist leaf litter, moss, and caves in very humid environments. The related T. yuensis was described from Sichuan, China, suggesting Trogloneta species may occupy humid, sheltered microhabitats.

Distribution

United States. Specific state or locality records are not detailed in available sources, though GBIF indicates distribution records from the USA.

Similar Taxa

Trogloneta yuensisCongeneric described from China in 2013, sharing the distinctive minute size and disproportionately large spherical ; distinguished by geographic distribution (China vs. USA) and subtle morphological differences
Mysmena speciesSame (Mysmenidae) with similar minute size and cryptic habits; Mysmena typically have different abdominal shape and proportions, with less dramatically globular
Other minute araneomorph spiders (e.g., some Symphytognathidae, Anapidae)Similar extremely small size; distinguished by -level characters including arrangement, structure, and genitalic

More Details

Taxonomic History

Trogloneta paradoxa was described by Willis J. Gertsch in 1960. The Trogloneta currently contains multiple distributed in the Americas and Asia, with T. yuensis described from China in 2013 representing a significant range extension for the genus.

Family Characteristics

Mysmenidae is one of the least studied of -weaving (superfamily Araneoidea), primarily due to the extremely small size of its members (typically 0.75–2 mm) and their cryptic lifestyle in difficult-to-access microhabitats such as moist leaf litter, moss, and caves.