INSECTS AFFECTING PARK AND WOODLAND TREES 457 



The above observations on the life history are from Dr Kellicott's 

 published account. 



This species is known to occur in Massachusetts, New York, Pennsyl- 

 vania and Ohio. 



Male. Head black; palpi orange, orbits white; collar dull orange. 

 Antennae black. Thorax deep purplish black with a very narrow stripe on 

 each side ; pale orange beneath. Abdomen slender, deep purplish or blue 

 black with a very narrow ring on the second and last three segments ; 

 underside pale yellow. Anal tuft black above, bright red beneath. Legs 

 bluish or purplish black, tibiae and tarsi banded with pale yellow; anterior 

 coxae yellow. Forewings transparent with borders purplish or bluish black ; 

 inner margin very narrow; outer margin rather broad. Discal mark large, 

 black. Underside same as above or washed with pale yellow. Hind wings 

 transparent, with very narrow margins. Discal mark small. Underside 

 same as upper. 



Female. Like the male, except the anal tuft, which is wholly red, and 

 the antennae have a large white patch on one side before the tip. 

 Expanse; male and female, 18-21 mm. BetUenmuller 



Divaricated buprestis 



Dicerca divaricata Say 



A flat, brassy beetle with divergent wing covers bores as a larva in peach, cherry, 

 beech, maple and other deciduous trees. 



This is one of our common flat-headed borers which, as a rule, does not 

 cause much injury though it operates in a large variety of trees. 



Description. The beetles have been described by Dr Harris as "cop- 

 per-colored sometimes brassy above and thickly covered with little punc- 

 tures ; the thorax is slightly furrowed in the middle ; the wing covers are 

 marked with numerous fine, irregular, impressed lines and small, oblong, 

 square, elevated, black spots ; they taper very much behind, and the long, 

 narrow tips are blunt pointed ; the middle of the breast is furrowed ; and 

 the males have a little tooth on the underside of the shanks of the interme- 

 diate legs. They measure from seven to nine tenths of an inch." The 

 slender tips of the wing covers diverge more or less, affording a character 

 for the ready separation of the species and one from which its specific name 

 is derived. 



