PINE-BEETLE. 



265 



e. Remedial Measures. 



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

 Hylohius ahietis, Fabr., page 225. 



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

 them in kilns with the roots inwards. 



3. My do pi dins piiiipcnla, L. (I'inc-hcetle). 

 a. Description. 

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

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



125. — Mijelophilus piniperda, L. 

 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), vhich is slightly impressed. 



b. Lifc-hi.<lonj. 

 Thejliyht 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. typoyraphus, L., on large Scots pines, etc., and in 

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



