REPORT OF STATE ENTOMOLOGIST 1899 



557 



co stigma] are much less abundant than last year. In most cases 

 where injury is being done, the cause is neglect to remove the egg 

 masses. The larvae of Prionoxystus robiniae and those of 

 Cyllene robiniae have destroyed nearly all the honey locust 

 trees in the city, and on June 29 an adult of the former species was 

 taken. June 30. Neoclytus erythrocephalus was observed 

 July 4 ovipositing on a dying tree, Tilia americana. Phy- 

 toptus quadripes was so numerous on silver maple as to cause 

 many leaves to wither and fall. The young larvae of Prionoxystus 

 robiniae were found the same day in great numbers boring in the 

 bark of oak trees, and adults of Saperda Candida were taken on 

 mountain ash (Pyrus sorbus) and on Paul's thorn (Crataegus 

 oxyacantha var. p a u 1 i i) ; this insect has nearly destroyed these 

 trees in Buffalo. July 2 the larvae and pupae of Cryptorhynchus 

 lapathi were taken from a Carolina poplar, and more recently the 

 same stages were secured in Salix babylonica. The adults 

 have been taken on Salix alba. White-marked tussock moth 

 [Notolophus leucostigma] is now in the pupal state, no 

 adults having been seen. July 13. Many Carolina poplars are being 

 destroyed by Cryptorhynchus lapathi. Larvae of A g r i 1 u s 

 anxius were found in the pupal cells July 14; young larvae about 

 1^ inch long were found July 19 feeding in the cambium layer, and 

 had then traveled some distance. On investigating the cases of human 

 injury attributed to the bite of the "kissing bug v , it was learned that there 

 were a number of sufferers and that examples ofOpsicoetus per- 

 son a t u s were readily found in the localities where most of the people 

 were bitten. Adults of Saperda calcarata began to emerge 

 from Populus monilifera July 18. This species is very destruc- 

 tive to the cottonwood and has been taken from other poplars. July 21. 

 One prominent physician took four specimens of Opsicoetus per- 

 son a t u s in his house. Every case which has come under my obser- 

 vation, since my last report, has been correct as regards the sting; the 

 persons whom I have seen relate that they were bitten at night. White- 

 marked tussock moth caterpillars [Notolophus leucostigma] 

 have nearly all spun up and a number of egg masses have been deposited. 

 From 85 to 90% of the whole brood has been destroyed by parasites, 

 Pimpla inquisitor being the principal parasite ; the next a 

 C h a 1 c i s , which I believe to be C. ovata, with Pimpla con- 

 qui si tor and a Tachina fly ranking after in importance. July 

 28. Agrilus anxius has been found thoroughly infesting black 



