Project Noah is a tool that nature lovers can use to explore and document local wildlife and a common technology platform that research groups can use to harness the power of citizen scientists everywhere.
I *think* this one's a Neoscona Arabesca. Anyway, it's very like the ambitious daughters of Arachne who build nets across my screen doors every year. Beautiful ladies, even if they haven't managed to realise that the only game on this trail is human.
This is a male Western Black Widow. The female is all black, with the hour-glass figure on the bottom, but the male has this different color pattern on the abdomen. Males are harmless and have no venom. Females are venomous, and can even be dangerous.