Piel, W.H. 2018. The global latitudinal diversity gradient pattern in spiders. Journal of Biogeography, 45: 1896-1904:

Erratum: Please note that the paper Piel, W.H. 2018. The global latitudinal diversity gradient pattern in spiders. Journal of Biogeography, 00: 1-9, the data download for GBIF was improperly cited. The correct citation is as follows:
GBIF.org (7th April 2017) GBIF Occurrence Download http://doi.org/10.15468/dl.ao53c1

Perl code for extracting species names and areas from the catalog: spider_catalog_scrape.pl