Chrysis coeruleiventris

Chrysis coeruleiventris

Purple, blue-black head, a little golden on the vertex. Pronotum, mesonotum and shield with large ocellated dots. Gibbous postcrest, blue as well as the metathorax and the ribs of the chest. Abdomen with large, loose spots, with the base of the 1st segment and the top of the three purple-blue; 3rd plan; line of points pressed; rim purple, short, convex, rounded truncated. Blue belly and feet.
7 ½ mil.
brightly colored Chrysis cuckoo wasp These wasps are **tiny** and extremely active... they would land for a moment before zooming back off.  I wasn't even sure I'd even managed a focused photo until I got home and was able to view the images on my laptop. I can only think unless they are docile when cold, that the stacked images you can find must be dead samples.. 

Pulling from a list of cuckoo wasps present in Basilicata, (here - https://www.chrysis.net/database-of-the-european-chrysididae-species-of/?regione=BAS ) Chrysis coeruleiventris is the only one with the distinctive blue/cyan band 

This and the last 3 photos were all taken on the surface of an ancient limestone column that was originally part of a Greek Temple.. these days it's quite the habitat. Multiple species of bees and wasps were using it's cavities as well as numerous spiders, lizards, geckos and even a small snake (that disappeared into a hole before I could even raise my camera..) Chrysis coeruleiventris,Geotagged,Italy,Spring

Appearance

[from Abeille, 1879: 79]. Elongated body. Head covered with large ocelli points, finer and loosely packed in the facial cavity, which is deep, limited at the top, but with a barely visible ridge; green near the mouth, blue in the cavity, green with a golden spot towards the ocelli, black posteriorly. Mandibles red, black at the tip which is bidentate. Black, metallic antennas on the first article. Thorax fire red with greenish reflections, except the postcrest and metasternum which are blue, and the sides of the chest which are blue spotted with golden green; covered with large ocellate dots, larger and less dense on the mesonotum, even larger on the escutcheon and postescutcheon; pronotum quite long, gibbous postcrest not very prominent. Angles of the metasternum thin, quite long, with a rounded and decumbent tip, not very blunt. Abdomen with 1st segment of bluish green on the 1st half, iridescent red on the other with the extreme blackish edge, covered with large, loose ocellated dots; 2st segment fiery red, iridescent black on the posterior quarter, with smaller and tighter spots; 3rd segment, greenish-gold, redder and bordered with steel-blue green at the top, punctuated rougher and more strongly than the previous one; line of points formed of 6 or 7 large confluent points on each side, submerged under the 3rd segment; iridescent rim, not long, punctate, convex, truncated, slightly rounded posteriorly, with rounded lateral angles, bi-sinuated sides. Belly entirely blue with black base of segments. Legs greenish-blue, tarsi blackish. Dark pubescence on the forebody, white behind. Hyaline wings a little dirty, radially closed. Black scales.

References:

Some text fragments are auto parsed from Wikipedia.

Taxonomy
KingdomAnimalia
DivisionArthropoda
ClassInsecta
OrderHymenoptera
FamilyChrysididae
GenusChrysis
SpeciesChrysis coeruleiventris
Photographed in
Italy