A revision of the genus Porteria and the phylogeny and biogeography of Porteriinae (Araneae: Desidae)

MORRILL, E.; CREWS, S.; ESPOSITO, L.; RAMIREZ, M.J,; GRISWOLD, C.

ZOOLOGICAL JOURNAL OF THE LINNEAN SOCIETY

WILEY-BLACKWELL PUBLISHING, INC

Lugar: Londres; Año: 2023

0024-4082

We revise the Chilean genus Porteria Simon 1904, including the type species, P. albopunctata Simon 1904, and 11 new species: P. ajimayo sp. nov., P. eddardstarki sp. nov., P. fiura sp. nov., P. misbianka sp. nov., P. bunnyana sp. nov., P. faberi sp. nov., P. torobayo sp. nov. P. alopobre sp. nov., P. correcaminos sp. nov., P. ariasbohartae sp. nov., P. contulmo sp. nov. A phylogenetic analysis using six genetic markers confirms the monophyly of Porteriinae, including Baiami Lehtinen, 1967 and the core porteriines, here defined to include the ecribellate genera Porteria Simon, 1904, Corasoides Butler, 1929, Cambridgea L. Koch, 1872 and Nanocambridgea Forster and Wilton, 1973. Core porteriines are diagnosed by a narrowed section of the piriform gland spigots field, cymbium extended to a narrow tip, and lack of median apophysis. Porteria and Corasoides are sister taxa, united by the behavior of running atop the sheet of the web and by spinning a regular square mesh in the web platform. According to our results, the diversification of Porteria started about 30 Mya (44–17 Mya). Biogeographic analysis infers that an ancestor of Porteria reached South America via a founder event from Australia or New Zealand, where their close relatives occur.