http://bugguide.net/node/view/344166 Bugguide.net By Bugguide user Richard Throne. Title: Tenodera angustipennis (narrow winged mantis). Location: Pitt County, North Carolina, USA. Date: September 26, 2009. The person's description about this Bugguide photo: "Note the clear wings and the more pointy shape. This is one way to distinguish this species from Tenodera sinensis."
http://bugguide.net/node/view/576042 Bugguide.net By Bugguide user ADeczynski. Title: Tenodera angustipennis - Tenodera aridifolia sinensis comparison male. Location: Newark, New Castle County, Delaware, USA.
http://bugguide.net/node/view/501536/bgimage Bugguide.net: By Bugguide User Link Davis, Title: Ootheca, From: Schwenksville, Montgomery County, Pennsylvania, USA, Date: June 18, 2008
http://bugguide.net/node/view/576034/bgimage Bugguide.net By Bugguide user ADeczynski. Title: Tenodera angustipennis. Location: Newark, New Castle County, Delaware, USA. Date: September 1, 2011.
http://bugguide.net/node/view/880800/bgimage Bugguide.net By Bugguide user Benjamin JD. Title: Narrow-winged Mantis. Location: Parkville, Baltimore County, Maryland, USA. Date: September 19, 2013. Description about this Bugguide photo: "Mantis with bright orange spot between front praying legs."
http://bugguide.net/node/view/67578/bgimage Bugguide.net By Bugguide user Paul Krombholz. Title: Tenodera angustipennis, mating pair. Location: New Jersey, USA. The person's description about this Bugguide photo:
"These are lab-reared mantids, but their ancestors were collected in New Jersey, near Princeton University in a field where both T. sinensis and T. angustipennis existed.
How do you tell them apart? The differences are subtle. Angustipennis is a bit more slender than sinensis, the green borders of the wings are narrower, The colors are slightly different in both green and brown forms. Sinensis green is a little bluer and sinensis brown is darker and a little more yellow. Angustipennis has an orange spot bordered in black between the forelegs (used in threat display), and sinensis has yellow, instead of orange. The egg cases are very different, that of sinensis being large and puffy, and that of angustipennis being flattened with very little foam material."
http://bugguide.net/node/view/861831/bgimage Bugguide.net By Bugguide user Bill Keim . Title: Narrow-winged Mantis. Location: Buckingham, Bucks County, Pennsylvania, USA. Date: November 2, 2013.