366 PTEI10PH0RUS LIENIGIANUS. 



Pterophoeus LIENIGIANUS. 

 Plate CLXIV, fig. 2. 



The full-fed larva is little more than three-eighths 

 of an inch in length, cylindrical, though tapering a 

 little behind ; the head is a trifle smaller than the 

 second segment, and rather rounded, greyish-brown 

 in colour, and marked with blotches of blackish- 

 brown on the lobes and between them, and is very 

 shining; the body is pale glaucous-green, and has a 

 very broad dorsal stripe of darker bluish-green, 

 through the middle of which runs an exceedingly fine 

 pale thread of the ground colour; the thin subdorsal 

 line is yellowish- white, and just above it is a whitish- 

 grey parallel streak ; all these are regularly interrupted 

 at the segmental divisions ; these divisions are some- 

 what yellow; the spiracles are whitish ringed with 

 brown ; there is a white wart on the hinder part of the 

 side of the third and fourth segments ; all the tubercles 

 are whitish, each bearing little fascicles of about four 

 white silky hairs, curved and finely pointed ; the 

 ventral surface and legs are a little paler than the 

 rest of the ground colour. (William Buckler, 11th 

 October, 1871 ; E.M.M., December, 1871, VIII, 158.) 



Early in July, 1870. in a country lane some miles 

 from Norwich, I chanced to find a plant of Artemisia 

 vulgaris, the leaves of which were eaten in a fashion dif- 

 ferent from anything I had before seen, — so curiously, 

 indeed, that I could not at the time imagine to what 

 family even the larva could belong ; and to make the 

 matter worse, it appeared to be quite deserted. At 

 home I again examined the plant, but finding nothing, 

 I threw it aside, and was not a little surprised, a few 

 days afterwards, at finding a specimen of Pterophorus 

 (Leioptilus) lienigianus at rest on the ceiling. The 

 riddle was therefore solved, as it was clear that the 

 pupa had been hidden so well that I had overlooked 

 it. 



