The man was most likely bit by a "Latrodectus Hesperus" or the western black widow. Only the female of the species can bite humans. Black widow bites are almost never fatal and rarely cause permanent damage to healthy people. Young children and the very old are at the most risk. They avoid humans and only attack if they are threatened or protecting their egg sacs. Muscle cramps and nausea are the most common symptoms along with chest pain.
Art Gilmore plays the uncredited role of a Battalion Chief in this episode. He previously had a recurring role as a Detective Captain in Dragnet.
This episode features LACoFD apparatus Foam 127. This actual apparatus is assigned to Station 127, which is the filming location for and doubles for Station 51.