William Hillcourt, The new field book of nature activities and hobbies, New York, A Putman Nature Field Book, p. 214, 1970.
The peculiar « houses » of caddis larvae can be observed best in a shallow pan, such as a photographic developing tray.
William Hillcourt, The new field book of nature activities and hobbies, New York, A Putman Nature Field Book, p. 214, 1970.
The peculiar « houses » of caddis larvae can be observed best in a shallow pan, such as a photographic developing tray.