Abstract
Egg-batches of Tabanus chrysurus Loew, 1858 were collected in and around the forest at Urakawa-cho, Hokkaido and at Shizukuishi-cho, Iwate-ken in August, 1977-1978. The eggs were laid on leaves, twigs and stems of 14 plants at the height of about 67.7cm above the ground. Total number of the egg-batches on the twigs and stems surpassed that on the leaves. These plants were grown at shady and wet places. The egg-batch was glossy blackish brown to black in color and roughly pyramidal in shape with 3 to 6 layers of eggs. Average number of eggs per batch was 729.
