Delena cancerides
Template:Short description Template:Speciesbox
Delena cancerides, the communal huntsman, flat huntsman or social huntsman, is a large, brown huntsman spider native to Australia. It has been introduced to New Zealand, where it is sometimes known as the Avondale spider.<ref name="RowellAviles">Template:Cite journal</ref> This was the species used in the Australian movie Napoleon and widely in Arachnophobia, and all films depict them as having a deadly venomous bite, but they are generally considered harmless to humans in real-life.<ref name="LandcareResearch">{{#invoke:citation/CS1|citation |CitationClass=web }}</ref> It was first described by Charles Athanase Walckenaer in 1837.<ref name="WorldSpiderCatalog">{{#invoke:citation/CS1|citation |CitationClass=web }}</ref>
Behaviour
Highly unusual among spiders, the flat huntsman spider is a social species, even sharing prey.<ref name="RowellAviles" /> They are often found under loose bark (their flat shape is an adaptation for this) in colonies up to 300, but they are highly aggressive and commonly cannibalistic toward members from other colonies.<ref name="BeavisRowellEvans">Template:Cite journal</ref> They hunt their food rather than spin webs for it. They are timid towards humans and bites are infrequent, and when they occur, symptoms are usually very minor.<ref name="MuseumVictoria">{{#invoke:citation/CS1|citation |CitationClass=web }}</ref>
Distribution
The species is found all over Australia, including Tasmania. It was introduced to New Zealand in 1924. Its range in New Zealand expanded slowly out of Avondale, a suburb of Auckland, hence the alternative New Zealand common name.<ref name="RowellAviles" /> There is a sculpture in the Avondale shopping centre celebrating the spider.
Appearance and genetics
Male D. cancerides have a body length of Template:Convert, while females are larger, with a body length of Template:Convert.<ref name="Hawkeswood2003">Template:Cite book</ref> The body is light brown and covered in dense, fine hairs. The legs are also hairy, and can have a span of over Template:Convert.<ref name="LandcareResearch" />
Various populations show major differences in the chromosomes, leading to the recognition of several "chromosomal subspecies", but these hybridize where in contact and there is little genetic divergence.<ref name="RowellAviles" />
References
External links
Template:Sister project Template:Sister project
- Avondale spider on the website of the Museum of New Zealand Te Papa Tongarewa