Taxonomy
- Kingdom: Animalia
- Phylum: Arthropoda
- Class: Arachnida
- Order: Araneae
- Family: Linyphiidae (sheet‑weaver spiders)
- Genus: Lygromma
- Species: Lygromma anops
Authority
The species was originally described by arachnologists W. J. Gertsch and I. A. M. Ivie in 1936.
Diagnostic characteristics
- Small-bodied spider typical of the genus Lygromma.
- The specific epithet anops (from Greek ἀν‑ “without” and ὄψ “eye”) reflects its reduced or absent ocular structures, a condition commonly associated with obligate cave dwellers.
- Morphological details such as genitalia conform to the diagnostic criteria of Lygromma species, but precise measurements and coloration patterns are documented only in the original description and subsequent taxonomic revisions.
Habitat and ecology
- L. anops is known from cave environments in Mexico, particularly the karst regions of the state of Oaxaca.
- The species is troglomorphic, exhibiting adaptations to low‑light conditions, including reduced eye development and depigmentation.
- Like other linyphiids, it constructs sheet‑like webs to capture small arthropod prey within the humid microclimate of caves.
Distribution
- Confirmed records are limited to a few subterranean localities in southern Mexico.
- No reliable reports of the species outside this geographic range have been published.
Conservation status
- The International Union for Conservation of Nature (IUCN) has not evaluated Lygromma anops.
- Its restricted cave habitat makes it potentially vulnerable to disturbances such as tourism, mining, and groundwater pollution, but specific population assessments are lacking.
Research notes
- The species is cited in the World Spider Catalog (2024 edition) as a valid taxon within Lygromma.
- Subsequent taxonomic works have referenced L. anops primarily in the context of cave‑adapted spider assemblages in Mesoamerica.
Etymology
The name anops derives from Greek roots meaning “without eyes,” a descriptive reference to the spider’s reduced ocular structures typical of troglobitic organisms.
All statements are based on published taxonomic literature and recognized arachnological databases; where specific details are unavailable, the entry notes the lack of sufficient encyclopedic information.
