Tile Horned Prionus

Prionus imbricornis - Tile-horned Prionus - This came to the kitchen window, right by the porch. I recognized it by its distinctive floppy "thunk" on the window.These things never sit still--I placed it on the stage and it raced off. I ended up setting the autofocus to continuous and doing a series of runs across the stage. Eventually I got a couple in focus and with the beetle alert.

Prionus imbricornis - this female was found ovipositing in my lawn one night, about 9:30 p.m. I find the males frequently at lights during late June, but seldom see the females. They are very uncooperative photographic subjects--running continuously when contained, and they are very strong. I count 18 segments on an antenna for this invididual, confirming that it is a female imbricornis. Similar species in this area have fewer segments. Body length (measured) is 40 mm--these things are huge!