Plants as oviposition sites of Hybomitra jersey (Takahasi, 1962) and its egg-batches (Diptera, Tabanidae)

Abstract

Egg-batches of Hybomitra jersey (Takahasi, 1962) were collected in the forest of Mt. Goyo, Kitakami Range in middle July, 1978. The eggs were laid on the underside of the leaves of Sasa nipponica Makino et Shibata and Astilbe odontophilla Miq. at the average height of 38.1cm above the ground. The plants were grown at the site of rather dark and a little dry forest floor. The egg-batch was glossy blackish brown to black in color and roughly pyramidal in shape with 2 to 4 layers of eggs. Average number of eggs per batch was 179.