348 THE CANADIAN ENTOMOLOGIST. 



NOTES ON ALYPIA MARIPOSA. 



BY JOHN B. LEMBERT, YOSEMITE, CAL. 



Food plant. — Clarkia elegans, etc. 



Egg. — Shaped like a white taole squash without the scollops ; usually 

 laid on the flower buds, the young larva feeding inside on the parts of the 

 flower ; hatched in eight to eleven days. 



First Stage. — Head bilobed, glossy black ; body smooth, with a few 

 fine bristles, when emerging dark on the upper side, which shade dis- 

 appears, leaving the body a pale amber in a few hours ; from the third 

 segment the body slopes at an angle of forty-five degrees to the anal claws, 

 which gives the third segment a humped appearance ; the thoracic legs, 

 six in number, are black ; eight abdominal legs and two anal claws, the 

 latter light with dark lines surrounding them. Length, 2 mm. This 

 stage lasted three days, with one day more for moulting. 



Second Stage. — Head bilobed, with a few bristles ; colour black and 

 glossy, with light marks appearing about the head ; the body darker 

 amber coloured, with pointed tubercles, each having a light-coloured bristle 

 protruding from it ; the thoracic legs black ; legs and claws as in former 

 stage. This stage lasted three days, v/ith one more for moulting. The 

 larva looped in both stages when walking, but ceased to do so in the next 

 stage. Length, 3 mm. 



Third Stage.— Wtzd as before ; a white, bell-shaped spot in the centre, 

 with two narrow short bands on each side of the head, one over the mouth 

 parts ; a white line down the back, below this a dull dark band on each 

 side, below these a white band, then a dark band running along the 

 legs from the head to the anal claws ; tubercles black, round and pointed 

 at the tip, bristle light and fine, becoming longer in each stage ; thoracic 

 legs, abdominal legs and claws black. This stage lasted three days, with 

 one day more for moulting. Length, 5 mm. 



Fourth Stage. — Head bilobed, the white band joining over the centre 

 of head above the bell-shaped spot ; the rest of the body as in the former 

 stage. This stage lasted three days, with thirty hours in moulting. 

 Length, 9 mm. 



Fifth Stage.— UQdid as before, the white band broader, more distinct 

 and longer than the others in proportion ; the first thoracic segment white 

 vi^ith eight black round dots near the neck and a black narrow band back 

 of the white, becoming yellow on the top of the segment, enough to cover 

 four of the black dots, the body markings increasing in breadth, the white 



