Forest entomology . s in , it may be mentioned that it is far more common on theEnglish variety of laburnum (Cytisus Laburnum) as compared withthe Scotch variety (Cytisus alpinum). The latter variety has very 1 Trans. Manchester Microscopical Society, 1896. 288 FOREST ENTOMOLOGY, much larger leaves, and a brighter green bark, in younger stages,than the former. If we examine the sheltered side of a laburnum - tree, or anyadjacent palings, about the latter end of April or the beginning ofMay, Ave are sure to see a brilliant, little, white moth, with a fewyellowish markings towards t
Forest entomology . s in , it may be mentioned that it is far more common on theEnglish variety of laburnum (Cytisus Laburnum) as compared withthe Scotch variety (Cytisus alpinum). The latter variety has very 1 Trans. Manchester Microscopical Society, 1896. 288 FOREST ENTOMOLOGY, much larger leaves, and a brighter green bark, in younger stages,than the former. If we examine the sheltered side of a laburnum - tree, or anyadjacent palings, about the latter end of April or the beginning ofMay, Ave are sure to see a brilliant, little, white moth, with a fewyellowish markings towards the apices of the wings. This is theimago of C. laburnella. It measures about Sh lines across theexpanded wings. The head and face are white, and the antennaefuscous. The anterior wings are white, with yellow spots or barsacross. The posterior wings are also white, with long ciliaa. Thethorax is white, and the abdomen pale-grey. The legs are also carefully examined under the microscope, this tiny moth is a. Fig. 274.— Foliage of laburnum injured by larvce o/Cemiostoma laburnella. very beautiful object,—so much so, that it seems to vie with therich colours and brilliant markings of tropical insects. The larva is about 3 lines in length, of a pale greenish-white colour,with sometimes a bright-green dorsal line,—due, of course, to thefood taken from the green colouring under the leaf. The pupa is encased in a white cocoon, pointed at both ends. The life-history may be thus briefly described : The moths appearduring the latter end of April or beginning of May, and deposit theireggs on the under surface of the leaf, generally near the are two broods in the year. In the first the larvae are full fedabout the early part of July. Then they leave their feeding-groundon the upper surface of the leaves and pupate on the back of the Li:iii)oi-ii;i;A. 289 leaves, more especially on the younger leaves, which have been form-ing throughout the summer season. The pu
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