Wolf spider (Hogna carolinensis), SEM

Wolf spider (Hogna carolinensis), SEM

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Caption: Coloured scanning electron micrograph (SEM) of Wolf spider (Hogna carolinensis). Also known as the Carolina wolf spider, this spider is usually regarded as the largest of the wolf spiders in North America. The wolf spider is a solitary spider that is usually nocturnal. They are ambush predators with large fangs that create a nasty bit but their venom is not very toxic. Wolf spiders are fast runners and large enough to capture, crickets, grasshoppers and other agricultural pests. Females can be up to 2 inches in length while males are less than an inch in length. They generally remain on the ground, hidden under natural shelters such as the edges of rocks, or in their own burrows. The female spiders carry their egg sac with them until the eggs hatch, but after hatching the mother spider carries her young for about a month before the spiderlings move off on their own. Magnification: x1.2 when shortest axis printed at 25 millimetres.

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