INSECTS AFKIiCTINC. PARK AND WOODLAND TREES 



671 



Xylotrechus undulatus Say. 



A beautiful, cyliiulric, brownish beetle about 'u inch long, and ornamented by 

 sulfur-yellow markings, occurs on both hemlock and si)ruce. 



This species is closely allied to X. colonus Fahr., l)ut ma)- be 

 separated, according- to Mr Wickhain, 1)\- the thorax having ;in apical and 

 basal pubescent band, the elytral bands being angnlatcd or 

 undulatory. It is a beautifully marked species with con- 

 siderable sidfur-yellow on the lateral anterior portions of 

 the thorax. Specimens were taken on spruce and hemlock 

 at Lake Clear and Big Moose in early July 1903. Dr 

 Packard also states that he has beaten it from spruce 

 at the end of July, and Dr Lintner states that Erastus 

 Corning jr of Albany, met with the insect at Murray. Bay 

 Can., in the month of August, at w-hich time they were 

 emerging from burrows in spruces. 



Distribution. This species has a wide distribution in 

 this country, since it has been recorded from Canada and the Eastern 

 States, and Dr Packard mentions having received it from Tacoma Wash. 

 Mr Fall records it from the northern portion of California. This species 

 is stated by Dr Hamilton to be rare in southwestern Pennsylvania. It has 

 been recorded from New Jersey by Dr Smith. 



Fig. .98 Xylutr. 

 clius undulatu: 

 enlarged (origiual) 



Blazed tree borer 



Scr7'opalpHS barbattis Schall. 



A slender, whitish, wood-boring grub enters the wounds of living trees and bores 

 deep into the sapwood and heartwood. 



The larva of this Melandryid is a slender, whitish, wood-boring grub, 

 which enters woiutds on living trees and bores deep into the sapwood and 

 heartwood, causing rapid decay of the infested parts. Dr Hopkins states 

 that it is common in blazed wood on balsam, fir and spruce trees along 

 trails in northwestern Maine, while Dr Smith lists it from New Jersey and 

 states that it has been taken from dry fungus. 



