Hogna

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Hogna
Hogna helluo on wood.jpg
Hogna helluo
Scientific classification
Kingdom: Animalia
Phylum: Arthropoda
Class: Arachnida
Order: Araneae
Suborder: Araneomorphae
Family: Lycosidae
Subfamily: Lycosinae
Genus: Hogna
Simon, 1885
Type species
Lycosa radiata
Latreille, 1819
Selected species

H. aspersa
H. carolinensis
H. ericeticola
H. radiata
hundreds more

Diversity
228 species

Hogna is a genus of wolf spiders with more than 200 described species. It is found on all continents except Antarctica.

The typical eye pattern of the Hogna species: the width of the bottom row of eyes is slightly less than the width of the two largest eyes in the middle row.

Species[edit]

Two species of Hogna, sometimes confused with each other, are among the largest found in the United States, Hogna carolinensis and Hogna helluo.

Hogna carolinensis[edit]

Hogna carolinensis females may have a body length of from 22 mm (0.87 in) to 35 mm (1.4 in), and Hogna helluo from 18 mm (0.71 in) to 21 mm (0.83 in), with males somewhat smaller. They are fairly easy to distinguish from each other both in gross physical appearance and in their behaviors.

The carapace of H. carolinensis is characterized by an overall dark brown coloration, usually without any patterned variations. Its abdomen has a slightly darker stripe down its center, and its ventral side is black. This spider typically dwells in a vertical tube dug into the ground that may reach as deep as eight inches.

Hogna helluo[edit]

The carapace of the somewhat smaller H. helluo is characterized by a clearly defined medial stripe from a point between the middle pair of eyes nearly to the point at which the carapace joins the abdomen. The abdomen has a broader light stripe with a darker narrow and tapering form like the head of a lance or a stone arrow point. The underside of the cephalothorax is solid black, but the underside of the abdomen may be spotted with lighter colored patches. This species does not dig tunnels but may create shelters under rocks and similar natural features. H. helluo frequently enters houses with the arrival of lower temperatures in autumn. They are inside only in search of warmer temperatures and make every possible effort to stay away from people. H. helluo is now classified under the genus Tigrosa as Tigrosa helluo.

Species list[edit]

See List of Lycosidae species#Hogna.

References[edit]