Hawk Moths
The above sphinx moths are the Manduca Sexta, AKA the dreaded tomato hornworm...
Not sure who this smaller moth is...
Want to observe the show in your own yard?
These moths start diving into the flowers at dusk... Just about the time "jeopardy" comes on the tv...
I've observed them also visiting the datura blooms and the crinum... matter of fact, I saw one actually pulling the petals open on one of my crinums!
Seems like they'd be into the brugmansias also... unfortunately... I keep forgetting to check...