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POLYGRAPHUS LONGIFOLIA, 4+ 
MS. 
THE LONG-NEEDLED PINE POLYGRAPHUS. 
Blatenevil tgs 2,4, b. 
Reference :—Provisionally determined Polygraphus longifolia, MS. new to the 
British Museum, 
Classification : Order, COLEOPTERA. Family, Scolytide. Sub-Family, 
Hylesini. 
Tree attacked :—Pinus longifolia. 
Description. 
Beetle—A small insect with black shining head and pro- 
thorax and brown elytra, the latter covered with a whitish- 
yellow, fairly close, pubescence with scattered longer yellow 
hairs near the apices of the elytra. This beetle has the same 
Polygraphus cl characters already described for the other species 
of the genus. There is a brush of yellow hairs on the forehead, 
and the head and prothorax“are pitted with not very close-set 
punctures. The elytra distinguish this beetle from P. minor, 
M.S. which it somewhat resembles in size and build. The 
antenna are brown witha yellowclub, Legs brown; tarsi yellow. 
Length about ;gth inch, Pl, XVI, fig. 2,a, shows this 
beetle. 
Life History. 
This insect probably makes its first appearance in the year 
some time towards the end of April or beginning of May, since 
mature and nearly mature beetles of what was evidently the 
first generation of the year were discovered in a young sapling 
in the middle of June, whilst the insect was found egg-laying 
at the beginning of July, the eggs being those of the second 
generation of the year. 
The beetle attacks sickly and dying saplings and branches, 
laying the eggs in the bast layer. It is often found in company 
with the small Cryphalus longifolia beetle. 
