252 
POLYGRAPHUS MINIMUS, MS. 
Blatep2uy lite yas 
Reference :—Provisionally named Polygrabhus minimus, ms 
Classification:—Order, COLEOPTERA. Family, Scolytide. Sub- 
Family, Hylesini. 
Tree attacked :—Pznus exce/sa (The Blue Pine). 
Description. 
The Jarva is.a minute white curved grub, 
The deetle is very small, black, moderately shining, with 
elytra covered with scattered longish white hairs. Head 
small, vertical in front, with a very short rostrum, Antenne 
short; scape thick, straight; funiculus 5-jointed; club 
compact, flattened, ovate; eyes oval, Prothorax cylindrical, 
narrower in front than behind, and uniformly pitted, Elytra 
_ fairly long, rounded at the posterior declivity, not wider than 
prothorax behind, pitted. Thighs of legs iong-oval. Tibize 
finely toothed on their external edge; tarsus filiform, the first 
three joints of equal size, the third not bilobed. The three 
intermediate segments of the abdomen of same size and 
short. Antenne and legs yellowish-brown. Length 11 millim, 
Pl. XVI, fig. 1, shows this insect. 
Life History. 
This is the third and smallest of the Polygraphus beetles found 
in the Blue Pine, Present observations would seem to show 
that it is unlikely to do much damage tothe tree. It was 
found in the third week in May making minute galleries in the 
bark of the bole of both dying and newly-dead trees. The 
inner bark where it adjoins the sapwood is the part 
attacked. It is thus a companion to the Rlue Pine Tomicus 
and the smaller Polygraphus (mznor), | have found it in anewly. 
felled tree in company with both. It remains, however, after 
the Tomicus attack is over, and thus appears to be able to lay 
its eggs in bark which is net absolutely fresh. The beetle was 
egg-laying when first found, some of the minute larve having 
Su Slebtiig tolu Qnde'am Toro [ woecks Pb. uaq Consdid b 
Cryplinguno pusillve Aylt.  FNE 1210045 

