218 INSECTS AFFECTING THE ORANGE. 



"Described from 1 ,?, 1 9 specimen bred by Mr. Hubbard at Crescent City, Fla., 

 September (5, from tbe puparium of an undescribed Anthomyid fly, called by Hub- 

 bard 'the Pruinose Aphis- fly.' 



" This species may bo at once distinguished from P. altiscuta Cook, the only other 

 described American species of the genus, by its smaller size, its less prominent scutel- 

 lum, more oval abdomen, and by the coloration of its legs and antcnnje. 



''Pachyneuron altiscuta is said by Professor Cook* to have been bred in large num- 

 bers from a scale insect on basswood, probably Lecanium tilice Fitch, and, as he there 

 quotes me as saying, the oaly other recorded instance which I can find of the breed- 

 ing of Pachynenron is the case of P. aphidis, bred from an Aphis hy Reinhard. It is 

 not at all likely, however, that species of this genus infest both Hemiptera and Dip- 

 tera, and as Professor Cook found a Syrphus larva feeding upon the eggs of his Le- 

 canium, it seems probable that P. aZtiscu/acomesfrora this dipterous larva. The same 

 may be the case with P. aphidis. The circumstantiality of Mr. Hubbard's notes leaves 

 no doubt as to the breeding of P. anthomyice from the puparium of the Anthomyid." 



Note 17 (p. 188). — This species has since been determined as Chrysis fasciata Fabr. 



* Notes on injurious insects. Entomological Laboratory, Michigan Agricultural Col- 

 lege [1884]. 



