PIIYLLOCNISTIS. 285 



Genus 11. PHYLLOCNISTIS. (?('-\/jl\-V 



Phyllocnistis, Zcll. L. E. iii. 26J; (1818). OjmU'(/a p., Zcll. Isis, 

 1839 J Dap. 



Capilli Ifevigati. Antenure alis anterioribus brcviorcs, conclnila parva 

 instructcG. Palpi labiales pcnduli, JiUfonnes. Ahc anteriorcs cau- 

 dulatic, posteriores lauceolato-lineares ; anteriorcs : ccllula discoida- 

 lis acuta venulas tres in costam, unam in apiccm, unara in niargincm 

 posticura emittit ; vena subdorsals simplex ; posteriores : vena uie- 

 diana dorso proxima venulas tres emittit. 



Head smooth. Anteniut! shorter than the anterior wings, witli a 

 small eye-cap. 'Lahml palpi droo])in(r, JUifomi. Anterior wings cau- 

 dulate, the posterior linear-lanceolate. In the anterior wings the acute 

 discoidal cell emits three veins to the costa, one to the apex, one to 

 the hinder margin ; the subdorsal vein is simple ; in the posterior 

 wings the median vein which runs near the inner margin emits three 

 veins. 



This genus resembles the preceding in the habit of the perfect 

 insect ; but the larva (according to Zellcr) is apod, and does not 

 quit the mine, but forms its cocoon within the leaf. Only two 

 very closely allied species are known. 



1. suflFusella, Zell. Isis, 1847, p. 89-1 ; Id. L. E.; iii. 2G6. h. pi. 2. 



f. 32 ; Sta. Alis anticis latiuseulis albis, nebula fusca disci jione me- ,tvi rrrrr 

 dium, striolis quatuor costa?, duabus dorsi I'uscis, puncto apieis atro. ^ ' — ■- 

 Exp. al. 3^ lin. f^a-^ 



Ilead, face, and palpi white. Antenna? pale fuscous; basal joint j 

 white. Anterior wings white, with a fuscons blotcJt on the disc beyond 

 the middle, and above it on the costa a short fuscous streak ol)li(|uely 

 placed, and beyond are three other short strcalcs, nearly straight, the 

 first of which unites with one from the inner margin, fornn'ng with it 

 a slightly angulated transverse line ; at the apex is a deep black spot, 

 from which three fuscous streaks radiate in the white cilia, and below it 

 is a fuscous hindcr-nuu-ginal line. At the base of the wing on the inner 

 margin is sometimes a fuscous blotch, and the entire wing is frecjuently 

 more or less suffused with pale fuscous. Posterior wings grey, with 

 whitish cilia. 



Hitherto scarce; api)cars in July and a\itumn, hybcrnated spe- 

 cimens occurring in spring; the larva mines in great blotches the 

 leaves of poplars in June and August. 



2. saligna, ZlU. E. E. iii. 270 (18-18); Sta.— mW/Jv/VZ/rr, Sta. 

 Zool. 1818. — unipniicU'lla, Step.? Alis anticis angustulis albis, linea 

 geminala ex basi nltra riiedinni prodncta, maeulam fnseam includente, 

 striolis quatuor costa-, duabus dorsi fuseis, puncto apieis atrt). Exp. 

 al. 3 lin. 



