Tags: Arachnid.
The spider genus Micrathena contains more than hundred species most of them Neotropical woodland orb-weavers.Only three species occur in the eastern United States: females of M. gracilis (the Spined Micrathena) have five pairs of conical tubercles on the abdomen female M. mitrata have two short posterior pairs and female M. sagittata (the Arrow-shaped Micrathena) have three pairs.
