THE INSECTS OF NEW JERSEY. 401 



MONARTHRUM Kirsch. 



M. fasciatum Say. Throughout the State V-VIII; bores into healthy and 

 sick trees in great variety; deciduous and coniferous. 



M. mail Fitch. With the preceding, but more rare and with an even larger 

 range of food plants, including apple; Anglesea IV, 23, brood found 

 emerging from oak and other trees (W). 



GNATHOTRICHUS Eich. 



G. materarius Pitch. Grenloch, lona V, 17, entering dying white pine 

 (W) ; probably occurs wherever this tree grows in the State. 



PITYOPHTHORUS Eich. 



P. bellus Eich. lona IV, 30, entering pine (W). 



P. minutissimus Zimm. Throughout the State in oak twigs, doing little 

 or no damage. Adults may be cut out any time during the winter. 







P. pullus Zimm. New Jersey ( Jiil) ; Atco, rare on pine (W). 



P. fagi Hopk. New Brunswick, boring in oak twigs (Coll). 



P. sparsus Lee. Orange Mts., rare (Bf) ; mines in green bark of injured 



or dying pine trunks or branches and hastens death (Hpk). 

 P. pulicarius Zimm. Bamber VI, 3 (W) ; Cape May C. H. VIII on pine 



(Sz); breeds in pine twigs (Hpk). 

 P. puberulus Lee. New Brunswick (Coll); Bamber VI, 3, Anglesea IV, 



27 (W) ; Cape May C. H. VII (Sz) ; infests dying terminal twigs of 



pine. 



P. querciperda Sch. Hemlock Falls, rare (Bf). 

 P. frontalis Hopk. Eagle Rock, rare (Bf ) ; New Brunswick in oak twigs 



(Sm). 



There are at least four other undetermined and probably new species 

 in collections. 



HYPOTHENEMUS Westw. 



H. ruficollis Hopk. Gloucester V, 13, Grenloch X, 15, Lahaway III, 26, 



cut out of peach, cherry, etc. (W). 



H. atomus Hopk. Westville II, 5, cut out of oak bark (W). 

 H. eruditus Westw. Orange Mts. (Bf ) ; New Brunswick (Sm); Anglesea 



VII (Sz); breeds in pith and wood of dead vines and twigs in great 



variety. 

 H. hispidulus Lee. New Brunswick from hickory and oak (Sm); cut 



out of sumac (W). 

 H. erectus Lee. New Brunswick from hickory and oak (Sm). 



The species are unsatisfactorily distinguished, and the last three may 

 be partly confused or may represent more distinct forms. 

 26 IN 



