This western diamondback was seen several times in one night.
At dusk—a clear, warm, dusk-- we found a vinegaroon! On a trip that had been plagued with evening downpours, that was a definite step in the right direction. Vinegaroons (aka whip scorpions or uropygids) are always a welcome find. Detaining it for photos induced the release of the protective acetic acid concoction from which this arachnid takes its name, but within a minute or two the little beast was continuing its trek across the pavement.

Although we were the first ones on the road, three other cars of herpers soon joined the hunt. But despite the competition we did reasonably well. The first find was a 2-foot long black-tailed rattlesnake, Crotalus m. molossus. Jake spied its nose, barely out of the roadside grasses, soon after darkness had fallen. Second up for the evening was a 2-foot long western diamondback, Crotalus atrox, the first of this normally abundant species we had seen on the trip. A trusting snake, we saw this young rattler on several other of the evening’s passes. The third snake of the evening brought an explosive “YESSSSSS” followed by a victory dance from Jake. It, a western hook-nosed snake, Gyalopion canum, was a taxon that had evaded us for the previous 2 years. And as it turned out, it was the only example of this little arachnid and insect eater that we found on this trip! Lady luck was smiling occasionally.