INSECTS AKFECTINC. PARK AND WOODLAND TREES 657 



Dicerca tenebrosa Kirb)' 

 An ashy bronze or obscurely bron/.c, llattencil, metallic beetle from a little over ^ to 

 nearly ^ inch long occurs on white pine from midsummer to October. 

 This insect has been described by LeConte as follows : 



Ashy bronze or obscurely bronze, the prothorax dilated on the sides, 

 which are rounded in front, sinuous behind, coarsely punctured ; behind 

 broadly excavated on each side, with apical and basal shininir smooth rugos- 

 ities; a definite dorsal deep furrow with smooth sides, somewhat interrupted 

 in the middle ; el)tra densely punctured, with alternate oblongs raised, shin- 

 ing interstitial spaces, prolonged entire to the apex; length .57 to .75 inch. 

 Male with the pectus broadly sulcate, villose ; the intermediate tibiae armed 

 with an internal acute tooth ; the last ventral segment truncate emarginate. 

 Female with the pectus smoother, less sulcate ; the last ventral segment 

 tridentate ; the intermediate tooth obtuse, defined by minute incisions. 



LeConte also adds the following regarding this specigs : 



The under surface is copper-colored, coarsely and densely punctured on 

 the sides, abdomen and prosternum, less densely on the metasternum and 

 middle of the first segment of the abdomen ; the divided portions of the 

 mesosternuni are coarsely and tolerably densely punctured. The outer 

 costae of the thorax are interrupted so as to form on each side an apical 

 and basal callosity. .\ female from Newfoundland differs by the epipleurae 

 being green, the under surface of the prolonged extremity of the elytra 

 blue, and by the incisures between the anal teeth being more wiciely 

 separated. 



Beetles belonging to this species were taken in July on arbor-vitae at 



Big Moose, and a specimen found in June 1900, at Saranac Inn. It is 



recorded as being abimdant at Lake Superior, and according to Kirby, has 



been taken in latitude 65° in the Rocky mountains. The beetle has also 



been taken under the bark of white pine in the Adirondacks by Mr George 



Hunt. Mr Blanchartl records finding it in Massachusetts on spruce wood 



piles and logs in June and also lists it from New Hampshire. 



Chrysobothris dentipes Germ. 



An oblong, oval, flattened, bronzed or purplish beetle, copper-colored beneath and 

 about Yi inch long, occurs in .small numbers on hard pine. 



This species was somewhat rare on hard pines at Karner in 1901. It 

 is similar in coloration to C. floricola Gory, though it is considerably 



