INSKCTS AlI-liCTlM. PARK AND WOODLAND TREES 66 I 



California, rannin<( .ts far south at least, as West X'ir^nnia. It probably 

 occurs in most places where ])ine j^^rows. 



Bibliography 

 1890 Packard, A. S. U. S. Km, Com. 5th Rcp't, ]>. 700-1 



Lesser pine borer 

 Ascviitm inocstiiiii llaKl. 



A blackish brown beetle ,':• to 5^ inch long occurs late in May on pine. 



The larva of this species makes flattened, cylindric lioles or mines 

 which perforate; the; trunk of white pine and other trees in all directions. 

 It is rather small, and the blackish brown beetle, about ^i to .)^ inch in 

 len_<;th, appears late in Ma\-. \\'e have met with this small borer on hard 

 and white pine in Ma\-. l)r Packard states that this species appears to 

 attack healthy as well as diseased trees, and cites several instances of 

 injurious work, lie finds that the exit holes are usually most abtuulant on 

 the south side of the tree or stump, and that in some cases the)- are \ery 

 numerous, as many as 10 occurring' in a space of five square inches. 1 he 

 lar\al j^allery is deep, extending,'- 6 or 8 inches toward the heart of the tree, 

 where it ends in an oval pupal cell. 



Description. The larva has been described in detail by Dr Packard, 

 who states that it is about hi inch lon^-, and that the ])rothora.\ inclines 

 downward toward the head, beiny; long and no wider than 

 the niesothoracic or metathoracic segments. Abdominal 

 segments rather broad, antl on the two hinder thoracic 

 and first abdominal segments are transverse, regular, 

 oblong areas banded 1)\ impressed lines. On segments 

 two and four the callosities are narrower and pointed 

 anteriorh', on si.x and seven the\>are a little longer than 

 broad, contracted posteriori) . .Smaller callosities occur on t 

 the ventral surface. The true legs are minute, three- Fig 

 jointed, small and rather short. 



The pupa is flattened, nearl)- '^ inch in length, somewhat biDnd and 



.\ ^ c ni u m 

 m o e s I 11 m, cDhirgcd 

 (ori>;in..I> 



