97 



myrtillata ; Platylahus dolorosus, Wesm., from Lygris testata ; P. pactor, 

 Wesm., from Tephroclystia sobrinata ; Diadromus varicolor var. 

 intermedius, Wesm,, from Plutella maculipennis {Cerostoma xylostella) ; 

 and Phaeogenes stipator, Wesm., from Depressaria apicella {nervosa). 



Kemner (N. a.). Ueber die Gattung Nothorrhina, Redt. [On the 

 Genus Nothorrhina, Redt.] — Entomologisk Tidskrift, Stockholm, 

 1918, pp. 322-328, 4 figs. 



A description is given of the larva and pupa of the Longicorn beetle, 

 Nothorrhina 7nuricata, Dalm. The larva makes galleries in the bark 

 of old pine trees close to the cambium, pupating in the bark, the 

 development apparently requiring two years. 



Tragardh (I var). Tallbocken {Monochamus suior, L.). [The Spruce 

 Beetle, Monochamus sutor, L,] — Svenska Skogsvardsforeningens 

 Tidskrift, Stockholm, 1918, pp. 221-232, 7 figs. 



The data regarding the damage done by Monochamus sutor and 

 its life-history are very scanty and partly contradictory, the opinion 

 being prevalent that only spruce trees are attacked, though as a matter 

 of fact both pines and spruces are injured. According to Barbey, 

 this Longicorn beetle is decidedly a secondary pest, whereas it is on 

 the contrary mainly a primary one. When young, the larva excavates 

 large, round chambers under the bark, which attain a width of 2 cm. 

 In the late summer it enters the wood through an oval opening and 

 excavates tunnels measuring 12-13 cm. long and 3-5 mm. wide. The 

 end of the gallery is more circular in transverse section and serves as 

 a pupal chamber, being separated from the surface of the trunk by 

 a thin wall through which the beetle makes its way when emerging. 



The data accumulated in Sweden go to prove conclusively that the 

 time required by one generation is only one year and suggests that 

 the beetle prefers newly cut timber, choosing exclusively for oviposition 

 logs placed in the sun, and thus evincing the same habit as the North 

 American species of the genus. It is a serious pest in Sweden 

 on account of the depth to which the galleries penetrate into the wood, 

 the only possible way of checking it being the complete removal 

 of the bark. 



Tragardh (Ivar). Tallviveln {Pissodes pini, L.) an allman men i vart 

 land hittills fogs beaktad Skogsinsekt. [The Smaller Pine Weevil, 

 a Forest Pest common in Sweden but hitherto neglected.] — Skogen, 

 1918, pp. 237-244, 7 figs., also printed as Leaflet no. 12, published 

 by Statens Skogsforsoksanstalt. 



This short treatise on Pissodes pini is based on investigations recently 

 carried out in Sweden by the author. When ovipositing, the female 

 bites a hole through the bark in which the eggs are laid, often several 

 together. This results in the young galleries often radiating from one 

 point and much resembling the larval galleries of some bark-beetles. 

 The injury done by the imago has hitherto almost escaped notice, 

 only one instance being recorded by Lagerberg of injury caused in 

 this way in Sweden. When feeding, the beetle attacks two to four- 

 year old shoots, boring small circular holes through the bark, measuring 



