192 



FOREST ENTOMOLOGY. 



giga>^, except that it is smaller, and the antennae and entire body of a 

 shiny metallic or steel-blue colour. The legs are also darkish. 



The male (fig. 185) resembles the female except in being smaller. 

 The thorax and first thoracic segment are steel-blue. The legs are 

 darkish, with the segments flattened. 



MISCELLANEOUS HYMENOPTERA. 



As the section of this order known as Phytophagous Ilymenoptera 



50 large that it would require practically a lifetime for the student 



to grasp, it is obvious, having regard to the size 



(of the field in forest entomology, that any at- 

 tempt to give correct systematic classification in 

 its entirety would overload the chapter. It is 

 therefore deemed advisable to give the following 

 insects as " Miscellaneous Hymenoptera," Avithout 

 any attempt at classification. 



Vespa Crabro, L. (Hornet). 



Wlien one sees a hornet's nest, or rather 

 the hornets moving in and out of their nest 

 in a hollow of a tree trunk, they may be con- 

 sidered as belonging to the realm of the general 

 entomologist, rather than to the student of 

 forest entomology. In this country they are 

 confined to the south of England, and do dam- 

 age to young stems of ash and alder. In Ger- 

 many, where they must in some places be very 

 numerous, Dr Altum gives a very detailed de- 

 scription of the damage they do to various forest 

 trees, much after the illustration given. I re- 

 ceived a damaged young elm from ^^ewmarket, 

 discovered by Mr Bond, Lambton; and Mr Forgan, 

 Bowood, Wilts, kindly forwarded me specimens 

 of young ash - trees which were considerably 

 damaged, of which fig. 186 is an illustration. 

 Fig. 187 is from a photograph of a hornet kindly sent me by Mr 

 A. Cameron, forester, Longleat, Wilts. 



'■^n 



Fig. 186. — Injury done to 

 ash stem hy hornet. 

 (OrawubvP. J. Brown.) 



