Spiny-Bellied Orb Weaver (Micrathena gracilis)

Image of female spiny-bellied orb weaver on a leaf

M. gracilis, the spiny-bellied orb weaver, or spined micrathena, has 5 pairs of black tubercles and a white and black (or yellowish and brown-black) mottled abdomen. Orb weavers, including this one, spin wheel-shaped webs that are usually positioned vertically. This species tends to hang with its "back" toward the ground and the spinnerets pointing upward, with the abdomen looking like a tiny pyramid.

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