INSECTS AFFECTING PARK AND WOODLAND TREES 



497 



Upis ceramboides Linn. 



This conspicuous jet black beetle, easily recognized because of the coarsely 

 reticulate, ridged wing covers may be found in July on fungi growing on white birch. 



This handsome beetle is about 3^ '"cH in length, jet black. Eyes 

 inconspicuous, finely granulate ; head and thorax finely punctured, and 

 wing covers coarsely reticulate as stated above. 



Platydema ruficorne Sturm. 



This small, oval, dull black beetle about Vie inch in length feeds in fungi. 



The antennae, palpi and anterior margin of the labrum are more or less 



rufous. The eyes are deeply emarginate, coarsely granulate, and the top of 



the head coarsely, and the prothorax finely punctured. The wing covers are 



faintly striated with a series of slight, well spaced punctures. This species 



occurs in early spring. 



Platydema americanum Lap. 



This brownish black, glistening, oval beetle about }^ incli in length infests fungi. 



The mouth parts are rufous, the eyes deeply emarginate, coarsely 

 granulate ; the labrum and dorsum of the head coarsely, and the prothorax 

 finely punctured. The striae of the wing covers are deeper than in P. 

 ruficorne Sturm, and the punctures a little closer. It is easily 

 separated from the preceding by its glistening color and different form. 



Platydema subcostatum Lap. 



This oval, rounded, brownish black beetle about '4 inch in length, occurs on fungi. 



The mouth parts and antennae are rufous, the eyes are deeply emar- 

 ginate, coarsely granulate ; the labrum and dorsum of the head coarsely, 

 and the pronotum finely punctured ; wing covers somewhat deeply striated 

 with rather coarse, slightly elongate punctures. 



Diaperis hydni Fabr. 



A rather stout, rounded, reddish and black beetle nearly }( inch long, occurs during 

 June and July on fungus growths affecting white birch and basswood. 



This species has the head and thorax jet black and the faintly striate 

 wing covers are bright red with black markings. The latter have a black 



