PINE-BEETLE. 265 



e. Remedial Measures. 



i. Burying trap-logs, or laying out bark-traps as against 

 Hylobius abietis, Fabr., page 225. 



ii. Digging up all attacked plants with a spade, and burning 

 them in kilns with the roots inwards. 



3. Mydopldlus piniperda, L. (Pine-beetle). 



a. Description. 



Beetle 4 to 5 mm. long; head and thorax black, elytra 

 blackish or dark brown ; antennae and tarsi rusty red. Thorax 



Fig. 125. Mye lophilus piniperda, L. 

 a Imago, b Larva, c Pupa. 



not longer than its width at the base and tapering in front, 

 shining, with scattered deep punctures, obsolete towards the 

 middle. Elytra with fine punctured striae ; the interstices 

 somewhat granulate, each with a row of bristle-bearing 

 tubercles, absent on the apical portion of the second interstice 

 (counting from the suture), which is slightly impressed. 



b. Life-history. 



The flight is at the end of March, April, and also in May ; 

 under favourable circumstances, again in June and July. The 

 eggs, to the number of 100 and over, are laid similarly to 

 those of T. typography*, L., on large Scots pines, etc., and in 

 preference on the south-west side of the trees. There is, 



