On Aug 16, 2007, jockoo from Philadelphia, PA wrote:
I've seen them here (Philadelphia, PA) only in the last two years.
The males hang around the nest but are not aggresive and can't sting anyhow.
On Aug 5, 2006, Hyblaean from Necedah, WI (Zone 4b) wrote:
http://bugguide.net/node/view/15541 - really nice living shots on this website- worth seeing
by Beatriz Moisset
They have a cylindrical body ranging from 1/2 to almost one inch (14 - 24 mm) in length, which is longer than most other bees in North America. The females tend to be larger than the males. The head and abdomen of the giant resin bee are black. Dense yellowish-brown hairs cover its thorax. Their wings are dark, but still transparent.
June to september in North Carolina.
The female bee nests alone and begins by preparing a cell in an existing tube or narrow cavity, using resin and sap collected ... read more