A close-up of very confused Black Delta Vespid Wasps (Delta curvatum) worshiping the contents of a Gallilean thermometer hanging in my lanai. Kihei, Maui.

Web sources indicate that similar gatherings of this species are common; they may group together during adverse weather, such as an extremely hot day. It was quite warm (>90 degrees F) when this photo was taken.
A large flight of Black delta vespid wasps (Delta curvatum) suddenly fell in love with the Gallilean thermometer hanging from the roof of my lanai (see next photo for a closeup of the confused bugs). Web sources indicate that similar gatherings of this species are common; they may group together during adverse weather, such as an extremely hot day. Kihei, south Maui.
A large flight of Black delta vespid wasps (Delta curvatum) suddenly fell in love with the Gallilean thermometer hanging from the roof of my lanai (see next photo for a closeup of the confused bugs). Web sources indicate that similar gatherings of this species are common; they may group together during adverse weather, such as an extremely hot day. Kihei, south Maui.
A large flight of Black delta vespid wasps (Delta curvatum) suddenly fell in love with the Gallilean thermometer hanging from the roof of my lanai (see next photo for a closeup of the confused bugs). Web sources indicate that similar gatherings of this species are common; they may group together during adverse weather, such as an extremely hot day. Kihei, south Maui.
A large flight of Black delta vespid wasps (Delta curvatum) suddenly fell in love with the Gallilean thermometer hanging from the roof of my lanai (see next photo for a closeup of the confused bugs). Web sources indicate that similar gatherings of this species are common; they may group together during adverse weather, such as an extremely hot day. Kihei, south Maui.
See photo in original gallery.