June,igi4 Bulletin of the Brooklyn Entomological Society bl 



Aphiochaeta halictorum Melander and Brues. A single male 

 of this species, taken at Algonquin, May 12, 1896 (W. A. Nason). 

 The mesopleura has a number of short setulas and two -strong 

 backwardly directed long bristles on the upper posterior fourth. 

 In other respects the specimen agrees with the original descrip- 

 tion, the mesopleural bristles being in all probability overlooked. 

 Aphiochaeta aletiae Comstock. This species has been reared 

 from pupse of Tceniocampa alia by Davis and Webster. The Ta- 

 niocampa larvae were obtained at Olney, 111. State Lab., Nos. 36,- 

 898 and 36,912. Under No. 16,542 in same series there are two 

 specimens of aleticc which were reared from breeding cages con- 

 taining Lachnosterna larvae. No. 10,337 was obtained under sim- 

 ilar circumstances, while No. 29,144 was reared from rotting 

 sugar beet. The facts here given seem to bear out the opinion 

 that, while the larvae of this species may attack healthy larvae or 

 pupae of other insects, they are more generally scavengers, or 

 found attacking injured larvae or pupae. I have in addition to the 

 above cases seen examples of aleticc which were found by Dr. 

 C. C. Adams in one of his insect boxes, the larvae having evidently 

 fed upon the insects contained therein. 



A character not given in my paper on the family,* by means of 

 which the female at least may be readily recognized is the pres- 

 ence of hairs on the surface of the fourth ventral segment, which 

 form a rather conspicuous row on the posterior margin. 

 Aphiochaeta aristalis new species. 



Male : Black, distinctly shining. Head black, frons glossy ; an- 

 tennae brown-black, palpi yellow. Mesonotum without distinct 

 pollen ; pleurae glossy, brownish on lower half. Abdomen sub- 

 opaque ; anal protuberance yellowish. Legs black-brown, fore 

 pair yellowish, their coxae clear yellow, mid and hind coxae, mid 

 tibiae, and bases of hind tibiae brownish yellow. Wings clear, 

 veins black. Halteres deep black, stems brownish. 



Frons about as broad as long, surface with many short hairs, 

 2 pairs of post-antennal bristles present, the upper pair separated 

 by about one third the width of frons, the lower pair much more 

 closely placed and half as large as upper pair; inner pair of 



* This and future references apply to " The Insects of the Dipterous 

 Family "Phoridse in the United States National Museum," Proc. U. S. N. 

 M., Vol. 43, 1912, pp. 411-529. (Ed.) 



