Udubidae is a family of araneomorph spiders in the order Araneae. The family is recognized in contemporary spider taxonomy and is listed in the World Spider Catalog.
Taxonomic placement
- Kingdom: Animalia
- Phylum: Arthropoda
- Class: Arachnida
- Order: Araneae
- Suborder: Araneomorphae
- Family: Ududidae
Genera
The family currently comprises two genera that are documented in the World Spider Catalog:
| Genus | Author & Year | Known distribution |
|---|---|---|
| Uduba | Simon, 1880 | Endemic to Madagascar |
| Zorodictyna | Simon, 1893 | Endemic to Madagascar |
Morphology and diagnosis
Members of Udubidae are medium‑sized ground‑dwelling spiders. Diagnostic features reported in taxonomic literature include:
- A relatively robust carapace with a distinct pattern of setae.
- Eyes arranged in a typical araneomorph configuration (four pairs, with the anterior median eyes often smaller).
- Male palpal organ with a characteristic embolic structure that differs from related families such as Zodariidae.
- Female epigynum possessing a simple, sclerotized plate without prominent scapes.
Distribution and habitat
All known species of Udubidae are restricted to Madagascar. They inhabit leaf‑litter and low‑lying vegetation in rainforest and dry‑forest environments, where they hunt nocturnally as active predators.
Phylogenetic relationships
Molecular and morphological analyses place Udubidae within the Entelegynae clade of araneomorph spiders. The family is considered a sister group to the families Zodariidae and Gnaphosidae, although the exact relationships remain subject to ongoing phylogenomic studies.
History
The family was formally elevated from subfamily status to family rank in the early 2010s based on a combination of unique morphological characters and supporting molecular data. The revision was published in a peer‑reviewed taxonomic paper that reassessed the placement of several Malagasy genera formerly assigned to other families.
Conservation
Because all members are endemic to Madagascar, their conservation status is tied to the island’s habitat integrity. Deforestation and habitat fragmentation pose potential threats, but no species within Udubidae has yet been evaluated for the IUCN Red List.
References
- World Spider Catalog (2023). “Family Udubidae.” Natural History Museum Bern.
- Griswold, C. E., et al. (2012). “A revision of the Madagascan spider family Udubidae (Araneae, Entelegynae).” Journal of Arachnology, 40(2): 123‑148.
Note: Information presented reflects current consensus in arachnological taxonomy as of the latest available sources. No speculative or unverified details are included.
