INSECTS AFFECTING PARK AND WOODLAND TREES 



459 



on tlic wiiio covers. These latter are as follows : A somewhat irre>;ular 

 trian<,nilar spot at the basal third of each wiii^; cover, an irregular, angu- 

 latcd, transverse band al the apical third, and a short, oblique, subrectan- 

 i^ular sjjot near the ajfex. The mark at the basal thiril is 

 absent in sonu- specimens. This beautiful buprestid bores 

 in maple, accordino- to Mr Hunt. Dr Fletcher has found 

 it abundant on poplars, antl it is recorded as rare in Xew 



Jersey. 



White-horned maple borer 



Xyp/iidria a/i>icor?iis Harr. 



A slender, blackisli. w.ispliko insect al)oiit iialf an inch long and 

 wiih most of the antennae white, bores as a larva in diseased hard ''";,",', ,'|".'V„u'rgcd 

 maple in I iil\ . 



l^.\amplcs (if this interesting species were taken July 4, 1905, at Nas- 

 sau, on the untlerside of a dying sugar maple limb, evidently destroyed b\ 

 a ftuigous or bacterial affection. The foliage had wilted just a few days 

 bc-fore and discolored areas extended through the wood almost the entire 

 length of the; limb, the abnormality bi-ing more (;\itlent at its base. The 

 bark si'parated readily from the wood ami an examination about the places 

 where the insects were foiuid, showed masses of eggs evidently belonging 

 to this s]iecies, deposited in peculiar elongati; caviticts in the inner bark. A 

 fa\-orite s])Ot seemed to be at the very base of the limb. usualK near an 

 elevated or rough portion of the bark. 



The eggs occurred in irregular inasses of a few to about 15, were pure 

 white in color, about i mm long, fusiform and with a slender, transparent, 

 flagellate appendage about .75 mm long. The eggs were almost in\ariably 

 in slight cavities, possibly induced by sap collecting and fermenting in these 

 places. The smaller cavities were very slightly discolored while larger ones 

 apparently varied from dark brown to nearly black. Oviposition was so 

 abundant that 15 to 20 or more of these egg masses were easily found in 

 10 or 15 minutes work. This species undoubtedly bores in decaying hard 

 maple limbs in much the same way as X y p h i d r i a j) r o \- a n c h e r i Cress. 



