

i 



\\t Canadian mtttomolo0bt 



Vol. XXXIII. 



LONDON, JANUARY, 1901. 



No. 1 



LIFE-HISTORY OF XYLINA BETHUNEI, G. & R. 



BY HENRY H. LYMAN, MONTREAL. 



On the evening of 17th of April, 1898, a $ of this species entered 

 my room, and was bottled and not looked at again until the morning of 

 the 19th, when it was found that the cyanide in the bottle was exhausted 

 and that the moth was still alive and had laid a considerable number of 

 eggs. The eggs were distributed through the cotton wool at the bottom 

 of the bottle, and this had to be carefully pulled to pieces thread by 

 thread to secure the eggs. 



The following description was taken : 



Egg. — Somewhat of gumdrop shape, .60 mm. in diameter, wider than 

 high. Many low ribs rising from the base, the whole surface pitted with 

 rather large depressions having the appearance near the apex of short 

 transverse striae. Colour when laid, creamy with a tinge of green, soon 

 turning whitish and then soon showing a mottling of brownish red. 

 Later they turned darker, but the mottling remained; hatching 1st and 

 2nd May. Egg period about 14 days. 



Young larva. — Stage I : Length, at rest, 1.42 mm.; in motion, 1.70 

 mm. Head large, considerably exceeding the 2nd segment, lower part 

 projecting forward. Colour creamy white, but with a darker interior 

 shade beginning at the 3rd segment and extending about two-thirds to 

 anal end, but darker and more marked on the anterior segments. Setae 

 long, concolorous, as are also the feet and claspers. 



The larvae were offered wild cherry, red-oak bud, hawthorn, silver 

 maple, white birch, willow, plantain, ash, apple. They ate several of the 

 foods offered, but preferred cherry, maple or apple ; hawthorn, birch and 

 plantain were not touched. 



By the 5th May the general colour was a pale green, the interior 

 shade being dark green, though some did not show the darker interior 

 shade, being uniformly pale green. 



Passing 1st moult 7th May; described 9th May. 



