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PAPERS READ BEFORE THE SOCIETY. 
OBSERVATIONS ON THE EARLY STAGES OF PHYLLOCNISTIS 
SUFFUSELLA, ZELL 
(Read December 17th, 1901, by Alfred SICH, F.E.S.) 
Bibliography.— The earliest notice I can find of this little insect 
is in the Naturforscher-', written indeed by one of the old masters of 
entomology, Goeze. He says ( Natf .., 14th St., p. 103, Tab. V., 
Figs. 1-8) in an article entitled “ Von der Oekonomie besonderer 
Minirwiirmer in den glatten Pappelbliittern ”: On the 14th July, 
1774, I discovered what I first took to be slime left by a snail on a 
poplar leaf.” On examining other leaves he finds they are mines, 
and at their termination sees the “graves.” He soon finds a little 
pale-yellow 7 worm, on vdiich he counts twelve rings besides the head 
and tail. He is puzzled that there is no excrement in the mines, and 
wonders whether he has a moth, a fiy, or a beetle before him. After 
some trouble he succeeds in rearing from the worms and their graves 
a beautiful little butterfly with veritable scales. Among the score of 
authors who mention this moth, Goeze is the only one who gives a 
practical hint on rearing it. He says, cut off the tw'igs (not the leaves 
only), and keep them in a bottle wdth water, or the little creatures will 
dry up. He says the moth’s tongue remains stiff, like the proboscis 
of a bug. It is not, however, so in these days. Goeze gives eight 
figures, but they are not of much account. He appears to have had 
both Phyllocnistis mfmella and /'. sor/iayeniella before him, as he says 
some moths have four and some five dark streaks on the wing. I 
cannot find that he gives the moth any name. It is, with him, the 
Miner of the Smooth Poplar Leaf. 
In 1839 Zeller, in his famous paper Yersueli finer naturyeiniissrn 
Kintheilmnj tier Schaben, I describes, under the genus Ojmsteya, a species 
which he calls saliyna, and which he says may be taken in the neigh¬ 
bourhood of willows and poplar trees, in the leaves of which the larva 
mines. 
Writing in the his of 1846 (p. 299) Madame Lienig also mentions 
(). saliyna as an inhabitant of Livonia and Curland. In the same 
journal, the following year (Isis, 1817, p. 894) Zeller describes a new 
species of Oyosteya under the name of snffnsella ; but of this descrip¬ 
tion more later. A year afterwards Zeller, in the Linnaea Pntmno- 
layica (1848, tab. II. and III., fig. 264), founded the genus / ‘hyllomistis, 
with the two species suffnsella and saliyna. In seven pages he gives 
a fair account of the larva, pupa, and mines. His description of the 
species and varieties will be again referred to. 
* Halle, 1774-1894. 
f Isis, von Oken, 1839, p. 214. 
