There are more than 1,300 North American species of parasitic flies. Most resemble robust houseflies, but with short, bristly hairs on their rear ends. Tachinid flies are gruesome parasites of other ...

DURING investigations on the physiological relations between the pine looper, Bupalus piniarius L. (Lep. Geometridae), and its parasite Carcelia obesa Zett. (Dipt. Tachinidae), some interesting facts ...

I find myself ineluctably drawn to the flowers of thistles and milkweeds. The flowers are large, bright, and showy, but more than that they usually attract a host of insects, including butterflies, ...