A worldwide community photographing and learning about wildlife
Sceliphron formosum
Is this a mud wasp? They have an extraordinarily thin, straight, stalk-like first segment of the abdomen. They are of moderate to large size (body length 17-26 mm) and largely black but with some areas yellow.
In the mud at wetlands.
Reference (from James McNair): http://www.brisbaneinsects.com/brisbane_... Second reference: http://museum.wa.gov.au/research/collect...