P.J. Liesch takes a vial or two with him when he goes for a walk outdoors.
If he finds an insect he wants to learn more about, the 29-year-old pops the critter into one of the glass bottles.
Liesch never gets bored when it comes to bugs.
He favors beetles and has a couple thousand in his personal collection. Often, he tucks them in the freezer until he can attach pins and labels to them after work, The Janesville Gazette reported.
The insect connoisseur took over in March as the main man at the UW-Madison's Insect Diagnostic Lab. He stepped into the job held for decades by Phil Pellitteri, who retired in February.
"I knew Phil well and had a good idea what I was getting into," Liesch said. "It's great being able to see insects coming into the lab from all over the state."