Lygromma

Superregnum: Eukaryota
Cladus: Unikonta
Cladus: Opisthokonta
Cladus: Holozoa
Regnum: Animalia
Subregnum: Eumetazoa
Cladus: Bilateria
Cladus: Nephrozoa
Cladus: Protostomia
Cladus: Ecdysozoa
Cladus: Panarthropoda
Phylum: Arthropoda
Subphylum: Chelicerata
Classis: Arachnida
Ordo: Araneae
Subordo: Opisthothelae
Infraordo: Araneomorphae
Taxon: Neocribellatae
Series: Entelegynae
Sectio: Dionycha
Superfamilia: Gnaphosoidea

Familia: Gnaphosidae
Subfamily: Prodidominae
Genus: Lygromma
Species: L. anops – L. chamberlini – L. domingo – L. dybasi – L. gasnieri – L. gertschi – L. huberti – L. kochalkai – L. nicolae – L. peckorum – L. peruvianum – L. quindio – L. senoculatum – L. simoni – L. taruma – L. tuxtla – L. valencianum – L. volcan – L. wygodzinskyi – L. ybyguara
Name

Lygromma Simon, 1893

Type species: Lygromma senoculatum Simon, 1893

gender: neuter

Transferred from Prodidomidae to Gnaphosidae (Prodidominae) by Azevedo, Griswold & Santos, 2018: 614.
Synonymy

Pseudolygromma Berland, 1913 (synonymized by Platnick & Shadab, 1976: 5)

References
Additional references

Platnick, N.I. 1978. Two new species of Lygromma (Araneae, Gnaphosidae). Journal of Arachnology 5: 151-152. Reference page.
Platnick, N.I. & Shadab, M.U. 1981b: New species and records of Neotropical Gnaphosidae (Arachnida, Araneae). Bulletin of the American Museum of Natural History 170: 189-196. Reference page.

Lygromma is a spider genus of Central and South America. There are species with eight, six (e.g. L. senoculatum, L. valencianum) and no eyes. The eyeless L. anops is endemic to Galapagos, while the not closely related blind L. gertschi is found only on Jamaica.

The Mexican genus Tivodrassus, and Tricongius have been suggested as sister groups of Lygromma.

Species reach a body length from about 2 to 4.6 mm.
Species

As of August 2022 it contains 19 species:[1]

Lygromma anops Peck & Shear, 1987 — Galapagos Islands
Lygromma chamberlini Gertsch, 1941 — Panama, Colombia, Cuba
Lygromma domingo Platnick & Shadab, 1981 — Ecuador
Lygromma dybasi Platnick & Shadab, 1976 — Costa Rica, Panama
Lygromma gasnieri Brescovit & Höfer, 1993 — Brazil
Lygromma gertschi Platnick & Shadab, 1976 — Jamaica
Lygromma huberti Platnick & Shadab, 1976 — Venezuela, Brazil
Lygromma kochalkai Platnick & Shadab, 1976 — Colombia
Lygromma nicolae Víquez, 2020 – Costa Rica
Lygromma peckorum Platnick & Shadab, 1976 — Colombia
Lygromma peruvianum Platnick & Shadab, 1976 — Peru
Lygromma quindio Platnick & Shadab, 1976 — Colombia
Lygromma senoculatum Simon, 1893 — Venezuela
Lygromma simoni (Berland, 1913) — Ecuador
Lygromma taruma Brescovit & Bonaldo, 1998 — Brazil
Lygromma tuxtla Platnick, 1978 — Mexico
Lygromma valencianum Simon, 1893 — Venezuela
Lygromma volcan Platnick & Shadab, 1981 — Panama
Lygromma wygodzinskyi Platnick, 1978 — Colombia

References

"Gen. Lygromma Simon, 1893", World Spider Catalog, Natural History Museum Bern, retrieved 2019-06-06

Platnick, N.I. & Shadab, M.U. (1976). A revision of the spider genera Lygromma and Neozimiris (Araneae, Gnaphosidae). Amer. Mus. Novitates 2598:1-23. PDF (8Mb) - Abstract (with key to species)
Platnick, N.I. (1977). Two new species of Lygromma (Araneae: Gnaphosidae). J. Arachnol. 5:151-152. PDF (L. tuxtla, L. wygodzinskyi)
Shear, W.A. & Peck, S.B. (1992). Male of the blind cave gnaphosoid Lygromma anops (Araneae, Gnaphosoidea, Prodidomidae) from Galapagos Islands, Ecuador. Journal of Arachnology 20:69-71. PDF