Sept., 1917-] Felt: New Gall Midges. 193 



Volucella fasciata Macq., variety. 



San Benito, at Argcmone. This differs from a Colorado specimen 

 as follows: Third joint of antennae longer and more slender; meso- 

 pleura without spots; spots in front of scutellum united to form a 

 semicircular patch, emarginate anteriorly; wing-markings darker; 

 marks on second abdominal segment paler, their apical side oblique 

 and inner angle more acute. It deserves a distinctive name, but prob- 

 ably one of the many names given to Mexican species applies. 



Chrysogaster bellula Willist. 

 San Benito, at Argcmone. 



NEW GALL MIDGES. 



By E. p. Felt, 

 Albany, N. Y. 



The species described below have come to notice recently and are 

 published at this time in order that the names may be used in an illus- 

 trated Key to American Insect Galls now in press. 



Lasioptera piriqueta new species. 



A series of three or four midges were received under date of 

 April 24, 1917, from R. H. Van Zwaluwenberg, of the Agricultural 

 Experiment Station, Mayaguez, Porto Rico, accompanied by the state- 

 ment that they were reared from Piriqueta ovata (Bello) Urban, 

 Family Turneracese, kindly identified through the courtesy of Dr. N. 

 L. Britton, of the New York Botanical Garden. The specimens were 

 accompanied by labels as follows: Accession number 32-1917, III-30- 

 1917, 2041, Mayaguez, P. R. The parasites in the vial were kindly 

 identified through the courtesy of Dr. L. O. Howard, chief of the 

 federal bureau of entomology, by Mr. A. R. Girault as Neomphaloides 

 sica Girault. 



Gall. — An irregularly oval, hollow stem enlargement, length i-i 5/10 cm., 

 diameter 5—7 mm. This gall may apparently be inhabited by several larvae. 

 The surface is more or less hairy. 



Male. — Length 1.5 mm. Antennae short, 16 segments, the fifth with a 



