<% Canadian Entomologist 



VOL. XII. LONDON, ONT., AUGUST, 1880. No. 8 



DESCRIPTION OF PREPARATORY STAGES OF ARGYNNIS 



CYBELE, Fabr. 



BY \V. H. EDWARDS, COALBURGH, W. VA. 



EGG — Conoidal, truncated, broad at base, the sides moderately 

 \ rounded ; depressed at summit ; marked by about eighteen prominent, 

 vertical, slightly wavy ribs, half of which extend from base to summit and 

 form around the latter a serrated rim ; the remainder end irregularly at 

 two thirds to three quarters distance from base ; between each pair of ribs 

 are equidistant transverse striae. Broader at base than Alcestis or Idalia. 

 Duration of this stage 12 to 17 days. 



YOUNG LARVA — Length .07 inch ; cylindrical, thickest at 5 and 

 6 ; color dull green, translucent ; each segment from 3 to 1 2 marked by 

 a transverse row of eight subtriangular tubercular dark spots, of which six 

 lie on dorsum and upper part of side and one on each side below 

 spiracles ; the middle spot of the upper three is back of the line and near 

 the posterior edge of the segment ; from each spot spring one or two long 

 curved hairs ; on 13 is a dorsal row of four spots and a second of two 

 spots near the extremity of the segment ; on 2 is a chitinous oblong 

 dorsal patch on which are minute tubercles, four in front row and one 

 behind the first and fourth of that row, each with fine hairs ; head a little 

 broader than any segment, rounded, slightly bilobed, a little pilose ; color 

 black-brown. 



After 1 st Moult — Length .13 inch; cylindrical, stoutest in middle; 

 color dull green mottled with brown, the latter taking the form of inter- 

 rupted longitudinal stripes ; spines disposed as in Alcestis and other 

 members of the group ; tapering, black, rising from black tubercles, except 

 those of the lower lateral row, which have dull yellow tubercles ; each 

 spine ending in a short black bristle, and beset with several others; feet black? 

 pro-legs greenish-brown ; head sub-cordate, the vertices rounded, the front 

 flattened and covered with many long black hairs ; color shining black- 

 brown. To next moult 8 to 12 days. 



