14 



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was first recorded, however, by Blackburn in 1881 and described by 

 Butler on Blackburn's specimens as a new species, P. blackhurni. 

 P. blackhurni later proved to be a synonym, as already indicated. 

 The larva: The larva is described by Blackburn as follows: 1 



Green or ashy gray, more or less sprinkled with white; spiracular line white, 

 emitting upwards and backwards (i. e., so that they slant upwards in a backward 

 direction) seven white stripes, the first of which is on the fourth segment (not counting 

 the head as a segment), the last on the tenth; on the eleventh segment is a small white 

 stripe bent backwards over the spiracle, being much smaller than the white lines 

 on the other segments; head with two well-defined black longitudinal lines, and 

 clouded with black laterally; spiracles black, surrounded with a bright blue ring; 



Fig. 7. — Phlegethontius quinquemaculata, the tobacco hornworm. a, Adult moth; 6, full-grown worm 

 or larva; c, pupa — natural size. (From Howard.) 



horn long, shining black, bent backwards; claspers of the ground color. In the 

 ashy gray larvae the whole dorsal surface is sprinkled with white; the segment behind 

 the head is shining black, bordered with white; the last claspers and space around 

 the anus are shining black (at least partially); and the legs are blackish at base, 

 becoming red toward apex. In the green larvae only a few segments near the head 

 are sprinkled with white, and the segment next behind the head, the last claspers, 

 and the space round the anus are olivaceous rather than black; the legs, too, are more 

 conspicuously red. 



The pupa: The pupa is of the usual large heavy-bodied sphingid 

 type with projecting tongue case forming the so-called " jug handle. " 



i Ann. and Mag. Nat. Hist., 5. ser., 7 (1881), p. 319. 



