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Giant Huntsman Spider

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Giant Huntsman Spider
492px-Heteropoda maxima 1
Information
Range Laos
Scientific Classification
Kingdom Animalia
Phylum Arthropoda
Class Arachnida
Order Araneae
Family Sparassidae
Genus Heteropoda
Species H. maxima

The Giant huntsman spider, (Heteropoda maxima), is a spider of the Heteropoda genus.

It is considered the world's largest spider by leg-span. The goliath birdeater may be the largest by mass. The huntsman appears to be a cave dweller and was discovered in Laos in 2001.

AppearanceEdit

The colouration is yellowish-brown with several irregularly distributed dark spots on the rear half. The legs have wide dark bands before the first bend. Like all huntsman spiders, the legs of the giant huntsman spider are long compared to the body, and twist forward in a crab-like fashion.

Apart from its size, the giant huntsman spider can be distinguished from other species of Heteropoda by genital characteristics: On males, the cymbium is much longer than usual, at least three times longer than the tegulum. The female is distinguished by a characteristically shaped epigyneal field with two anterior directed bands, and the course of their internal ducts.

The giant huntsman spider is the largest member of the Sparassidae family, boasting a 30 centimeter (12 inch) leg-span, and 4.6 centimeter (1.8 inches) body-length. The largest known member of the Sparassidae known prior to the discovery of H. maxima was the Australian Beregama aurea (L. Koch, 1875) with a body length of about 4 centimeters. (Since the discovery of H. maxima, Sparassidae species larger than B. aurea has been discovered, one of them is considered to be the largest in the Middle East).

Distribution and HabitatEdit

The giant huntsman spider is found in Laos, and is probably a cave dweller because of its pale colour, long legs and special hairs on the second foot of the male. There is no apparent reduction of the eyes, however, possibly because the species lives near cave entrances.

DiscoveryEdit

The giant huntsman spider was discovered in northern Laos in 2001. Over a thousand new species of plant and animal were found between 1997 and 2007 in the Greater Mekong Subregion.

A representative of the World Wide Fund for Nature quipped that "Some of these species really have no business being recently discovered", suggesting that it is surprising for a species this large to go undiscovered for so long.

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