Cindy Burkhardt had been watching a sphinx moth caterpillar in her garden for several days, but then it disappeared. Soon thereafter, she saw another trundling across a dirt road on Rabbit Mountain.

Late summer temperatures were still uncomfortable at lower elevations, but at nearly 5,000 feet the air had a distinct autumn feel as I enjoyed a late afternoon hike around Lake Cuyamaca. I paused to ...

When Paul Johnson, moth aficionado and researcher, was asked why he was interested in the Pacific green sphinx he shot back, “Why are you interested?” He chuckled as there was no immediate answer ...