Piabuna
Chamberlin & Ivie, 1933
Species Guides
1Piabuna is a of small, ground-dwelling spiders in the Phrurolithidae, to North America. First described in 1933, it has undergone multiple family reassignments, reflecting ongoing revisions in spider . The genus contains six described distributed primarily in the southwestern United States and Mexico. These spiders are rarely encountered and poorly known in terms of natural history.
Pronunciation
How to pronounce Piabuna: //pi.ɑˈbuː.nə//
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Identification
Distinguished from other Phrurolithidae by the structure of the male and female ; within Piabuna are separated primarily by spine length and patterning on the and . Piabuna brevispina and P. longispina differ conspicuously in the relative length of their spines. P. pallida is notably pale in coloration compared to . Precise identification requires examination of genitalia under magnification.
Habitat
occur in arid and semi-arid environments, including desert scrub and dry grasslands. The specific epithet of P. xerophila (from Greek xeros, dry, and philos, loving) indicates to xeric conditions. Specimens have been collected from ground litter and under stones.
Distribution
Southwestern United States (Arizona, New Mexico, Texas, and adjacent states) and northern Mexico (Sonora, Chihuahua, and Coahuila).
Similar Taxa
- PhrurolithusAlso in Phrurolithidae and superficially similar in habitus; distinguished by differences in genital and geographic distribution (Phrurolithus is primarily Palearctic).
- LiocranumFormerly placed in the same (Liocranidae) before Piabuna's transfer; differs in arrangement and genital structure.
More Details
Taxonomic history
Piabuna was originally described in Liocranidae (1933), transferred to Corinnidae (2002), and finally to Phrurolithidae (2014) based on molecular and morphological phylogenetic studies. These revisions reflect the instability of ground spider classification in the 20th and early 21st centuries.
Etymology
The name is an arbitrary combination of letters without evident meaning; epithets describe morphological traits (brevispina = short-spined, longispina = long-spined, pallida = pale) or (xerophila = dry-loving).