INSECTS AFFECTING PARK AND \\<JODLANl) TREES 



4SI 



destroyed by an unknown Tachinid parasite and another small dipterous 

 larva is sometimes found feedinjx in considerable numbers on the larva or 



l)U])a. 



Bibliography 



1904 Felt, E. P. it Joutel, L. H. V. V. State Mii> lUil 74, \,. 18-20 



Liopus alpha Say 



A small, legless grub l)oring irregularly in tlead suuiai- and other twigs, may he the 

 young of this beetle. 



This species occurs rather abundantl\- in deatl simiac t\vio;s at Clinton 

 Heights. The infesteil twiijs were gathered and many of the beetles bred 

 therefrom the latter part of May. 



The beetle is about '4^ inch long, rather stout, and remarkable for the 

 long, delicate antennae, which have the enlarged distal portion of each 

 joint dark brown or nearly black. It is rather prettih' 

 marked with silvery gray, light and dark brown, the 

 irregular obli<|ue stripe just behind the middle of 

 each wing cover being the most conspicuous, the two 

 forming a \' with its point toward the head. Accord- 

 ding to .Mt-ssrs Leng and Hamilton, this species is 

 (piite variable and difficult to separate from allied 

 forms. Thev descril)e five variations in markings 

 antl staK- that it may be separated from its ally, 

 L. c i n e re u s Lee. 1)\- the finelv piuictured surface, 

 behind the banil almost impunctured. i.ire.-.i (..riKin.ii) 



The fidl grown larvae are about I, inch long, ami i)resent no unusual 

 characters. I'nfortunately specimens were not preserved and a detailed 

 description is impossible. 



'Idle working of this larva is limited very largely to the central portion 

 of the: twig, and the gallery of one borer may have a length of 2 or 3 

 inches. The e.xit hole is oval and a little over ' ,, inch in diameter. 



Distribution. .Say states that this species is not rare in I'enns\lvania 

 and that he has obtained it from the Northwest Territory, anil LeConte 



