INSECTS AFFECTING PARK AND WOODLAND TREES 657 



Dicerca tenebrosa Kirby 



An ashy bronze or obscurely bron/.e, flattened, metallic beetle from a little over Jj to 

 nearly ^4 inch long occurs on white ])ine from midsummer to October. 



This insect has been described by LeContc as follows: 



Ashy bronze or obsciu'ely bronze, the prothorax dilated on the sides, 

 wiiich are roiindetl in front, sinuous behintl, coarsely punctured; behind 

 broadly excavated on each side, with a])ical and basal shinintj^ smooth rut^os- 

 ities ; a definite dorsal deep fin-row with smooth sides, somewhat interrupted 

 in the middle ; elytra densely pimcturcd, with alternate oblons^, raised, shin- 

 iui,^ interstitial spaces, ])rolongetl entire to the apex; lenijth .57 to .75 inch. 

 Male with the; |iectus broadly sulcate, villosc; ; the intermediate tibiae armed 

 with an internal acute tooth ; the last ventral seofment truncate emarcjinate. 

 Female with the pectus smoother, less sulcate; the last ventral sej^ment 

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



LeConte also adds the; folh^wint^ rei^ardiuL;' tiiis s|)ccies : 



riu- under surface is copper-colored, coarse-ly and di/nsely piuictiu'ed on 

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

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

 mesosternum 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 luider surface of the prolonged extremity of the elytra 

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

 separated. 



Beetles belonging to this s|:)ecies were taken in July on arbor-\itae at 



Big Moose, and a specimen foiuul in |une 1900, at Saranac Inn. It is 



recorded as being al)undant at Lake .Superior, and according to Kirby, has 



been taken in latitude 65' in the Rocky mountains. Thi- beetle has also 



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



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



^iles and logs in fime antl also lists it from New Hampshire. 



Chrysobothris dentipes Germ. 



.\n oblong, oval, fl.ittened, bronzed or purplish beetle, copper-colored beneath and 

 about j^'2 inch long, occurs in small numbers on hard ])ine. 



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 



