IOWA ACADEMY OF SCIENCES. 
209 
found that numerous white larvae and pupae about one-eighth 
inch long are present and working in the woody tissue of the 
plant. They make small tunnels, packing the borings around 
them much as does the potato-stalk- weevil. They pupate in 
these tunnels and emerge as a small black beetle. 
The adult when first formed is white and takes on the black 
color gradually, beginning on the head and thorax and then 
extending backward to the scutellum and base of elytra and 
then gradually over the whole body. 
The adults are quite active but drop to the ground as soon 
as disturbed and remain very quiet for some time. 
Specimens of the adults kept on plants under observation in 
the laboratory worked in the young tender tissues, either eat- 
ing into the terminal portions or into the stems at the axils of 
the leaves, almost burying themselves and finally causing the 
small leaf or branch to break down, as do the larger branches. 
They were not confined entirely to the parts just mentioned but 
would eat into the little leaflets as they were expanding, thus 
preventing their complete opening. 
One individual was found boring into the end of a broken 
stem making its way into the pith and almost disappearing in 
a short time. It remained in that position for some time. Think- 
ing that it might be a female and that the eggs were being 
deposited, the cavity was examined at the end of four or five 
days, but no eggs were found. This adult was placed on a grow- 
ing plant and soon began feeding in the young tissues as stated 
above. On one small plant in the laboratory the young leaves 
were so badly eaten into that the plant died in a short time. 
One specimen was taken while collecting in the woods August 
31st. So the species undoubtedly infests other plants besides 
the one recorded above. 
Nothing can be stated concerning oviposition and the early 
larval stages. As stated above, numerous fully grown larvae 
and pupae were found in the root-stock and base of the larger 
branches September 1st. A few fully colored adults were found 
a few days later. One root- stock was isolated during the sec- 
ond week in September and adults kept gradually issuing until 
about the middle of October. From this one root- stock as many 
as twelve to fifteen specimens issued besides the numerous larvae 
and pupae that were removed for the purpose of examination. 
Since no eggs were deposited by the specimens kept under 
observation and adults were still very active after the plants 
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