COLEOPTERA SCOLYTID.E. 



97 



'< 



punctured striae ; abdomen thickly covered with hairs, and, viewed 

 sideways, there is a strong horizontal projection on the under side of 

 the abdomen, which is peculiar to this species. 

 Length 2 to 3 mm. fe^ 



This species makes its galleries in thin- 

 barked elm. The mother - gallery is from 

 one to one and a half inch in length, and 

 perpendicular with the stem. The larval 

 galleries are approximately at right angles 

 to the mother-gallery. 



I found the piece of bark which pro- 

 duced the photograph for fig. 88 in Glouces- 

 tershire, and Mr Morse, Leeds, sent me 

 insects for description. 



This species is said to be double-brooded. 



SCOLYTUS INTRICATUS (Eatz.) 



The species is said not to be at all com- 

 mon, and only once have I found any trace 

 of its markings in Northumberland. Mr 

 A. C. Forbes informs me that it is common 

 in Wilts on oak limbs broken by wind. I 

 found the specimen which supplied the 

 photograph for fig. 89 in Belgium, on an 

 oak stake, and just recently I found it fairly 

 common at Newball, in Lincolnshire. The 

 mother-gallery is horizontal and short, being 

 about | to 1 inch in length. The larval 

 galleries run at right angles to the mother- 

 gallery, and are about 2 inches in length. 



The beetle, fig. 90, is described by Fowler 

 as being about "3-4 mm. long, black, shin- 

 ing, elytra duller, with the antennae and legs ferruginous, and the 

 femora and elytra pitchy brown or pitchy red." 



Altum cites a case l where 50,000 oaks, 25 to 30 years old, were 

 killed by this species. 



1 Forstzoologie. 

 G 



Fig.89. Markings of Scolytus 

 intricatus on oak pole. 



Fig. 90. Scolytus intricatus. 

 (Prom Fisher's ' Forest Pro- 

 tection.') 



