CATALOGUE OF INSECTS 159 



TETTIX Fischer. 



T. ornatus Say. Caldwell (Cr), Staten Island, IV-IX | Ds i ; Camden County 



(Ss). 

 T. triangularis Scudd. Occurs with ornatus occording to Beuteumuller, who 

 considers it a variety. 



T. granulatus Kirby. Recorded doubtfully from Staten Island, IV-IX, by 



Davis, and also noted from New Jersey by Seiss. 

 T. cucullatus Scudd. "New Jersey," IV-IX (Bt), Del. Water Gap, VII, 



Glassboro, IX, 19 (Jn). 



Family LOCUSTIDiE. 



These are the long-horned or meadow grasshoppers and the katydids. They 

 are generally green in color. The antennse are thread-like and much longer 

 than the body : sometimes two or three times as long. The hind legs are also 

 formed for leaping, but are much longer and proportionately more slender than 

 in the Acridities ; In the females the ovipositor is prolonged into a blade made 

 up of four flat portions, the whole sometimes straight, sometimes curved or 

 sickle-shaped. In the males the wing-covers overlap at the base and are modi- 

 fied into a sound-producing organ by means of which the)' produce either a 

 shrill continuous call or a chirping or rasping which, in one case, forms the 

 call Ka-ty-did, or Ka-ty-did-nt. Only the males are musical ; but in both sexes 

 an ear is found on each fore-leg. The head in most of the species is pointed 

 apd the mouth parts are well developed, the mandibles especially being long 

 and sharp-pointed. This makes it possible for them to dig into tissue or to eat 

 seeds, as many do, of grasses. Several species occur on cranberry bogs and 

 some eat into the berries to get at the seeds ; species of Scudderia being the 

 chief offenders. The most practical remedy in this case is a flock of turkeys, 

 which will keep down the species when young and drive off those that are 

 winged. Insecticides are of no practical value. 



The members of this family winter chiefly in the egg stage, the eggs being 

 laid in grasses, reeds, stems of plants, bark of trees, even in the leaves between 



Fig. 70. — A species of Microcentntm. 



the upper and lower layers, the blade or sword-like ovipositors being especially 

 adapted for this purpose. In one case the eggs are laid externally on an edge> 



