70 



ENTOMOLOGICAL SOCIETY OF ONTARIO. 



TrOGOSITIDjE. 



1. Trogosita corticalis, Melsh. An elongated, flattened, brownish beetle, about 

 three-fifths of an inch long, with finely striated elytra, found under the bark of old trees ; 

 cannot be considered injurious. 



2. Grynocharis J/.-lineata, Melsh. A more flattened black beetle, about twice as 

 wide as long, and very variable in size, from a little over two tenths to nearly four-tenths 

 of an inch long. Each elytron has four raised lines, between each pair of which is a double 

 row of punctures. This beetle is found under bark with preceding, and is also harmless. 



Elaterid^. 



3. Corymbites cruciatus, Linn. A handsome " click-beetle," whose larva is one of 

 the wire worms which feed in decaying wood, and which has always been found by me on, 

 or in the vicinity of, beech. It is about half an inch long, head black with the exception 

 of the reddish mouth parts, thorax black with a bright red stripe down each side above 

 and below, body beneath black margined with red, elytra yellow with sutural stripe, short 

 humeral stripe and sinuate band behind middle, black. The black sutural stripe and the 

 transverse band form the cross from which the name is derived. 



BUPRESTIDjJE. 



4. Dicerca divarieata, Say. A brownish or blackish bronzy beetle, of rather stout 

 build, from three-quarters to almost an inch long. (Fig. 71.) It is a well known pest of 

 such trees as the maple, apple, etc., its larvae being one of the " flat-headed " borers, 

 so-called because the thoracic segments (next the head) are much wider than those that 

 follow. It is sometimes quite abundant on old trees, and in May and June can be found 

 ovipositing therein. Some entomologists consider that the beech was the original" food- 

 plant of the insect. 



F 71. 



Fig. 72. 



5. Chrysobothris femorata, Fab. This common borer of the apple tree (Fig. 72) has 

 also been recorded (Riley, 7th Rept., p. 72) from beech, although of all the forest trees 

 in this neighbourhood it seems to prefer the hickory. The oak, maple, mountain ash, 

 linden and box elder are also said to be attacked by it. It is a flattened beetle, some- 

 what over half an inch long, of a metallic, bronzy colour with some greenish reflections, 

 and the face of the male is bright green. It has been often mentioned in our Reports. 



6. Chrysobothris seccsignata, Say. This beetle very closely resembles the preceding, 

 but is slightly smaller, and is more rare with us. Mr. Chittenden records (Ent. Amer.'V., 

 p. 219) cutting a specimen from a beech tree. This beetle has also been found in yellow 

 birch (Packard 1. c, p. 485 



