<P> Australia has some highly venomous spiders, including the Sydney Funnel - web, its relatives in the family Hexathelidae, and the Redback Spider, whose bites can be extremely painful and have historically been linked with deaths in medical records . Most Australian spiders do not have venom that is considered to be dangerously toxic . While there have only been several reports of death caused by spider bites in Australia since the widespread availability of medical treatment, none have been substantiated by a coronial inquest since 1979 . There are, however, no shortage of sensationalised news reports that fail to cite evidence of any kind . A Field Guide to Spiders of Australia published by CSIRO Publishing in 2017 featuring around 836 species illustrated with photographs of live animals, around 381 genera and 78 families, introduced significant updates to taxonomy from Ramirez, Wheeler and Dmitrov </P> <P> The great exploratory work on Australian spiders, Die Arachniden Australiens, nach der Natur beschrieben und abgebildet (1871 - 1890), was begun by L. Koch and continued by Graf E. von Keyserling . The collectors of that time included Eduard Daemel (1821--1900) entomologist, trader, explorer and collector; and Amalie Dietrich (1821--91) who spent 10 years in Australia collecting specimens for the Museum Godeffroy in Hamburg . </P>

How many types of spiders are in australia