THE CANADIAN ENTOMOLOGIST 



353 



A NEW DIASTROPHUS ON STRAWBERRY. 



BY WILLIAM BEUTENMULLER, NEW YORK, N. Y. 



Diastrophus fragariae, n. sp. 



Head jet black, face rufous and coarsely rugose, vertex and 

 cheeks smooth and very highly polished. Antennae 14-jointed, 



basal joints rufous, the fol- 

 lowing joints gradu^ally be- 

 coming darker. Thorax jet 

 black, smooth and highly 

 polished, collar rugose, 

 pleurae somewhat shining. 

 Parpsidal grooves broad 

 and well defined, continu- 

 ous and rather widely 

 separated atthe scutellum. 

 Lateral grooves indistinct 

 and scarcely perceptible. 

 Median groove wanting. 

 Scutellum coarsely rugose, 

 obtusely pointed at the tip, 

 foveae at base shining and 

 close together. Abdomen 

 pitchy black, microscop- 

 ically punctate, petiole 

 rufous. Legs yellowish 

 brown, claws black. Wings 

 hyaline, ciliate, radial area 

 closed, cubitus continuous, 

 cross-veins heavy, all xeins 

 dark brown. Length, 2 mm. 

 Gall — On the petiole 

 of Strawberry: Polythal- 

 amous, elongate cylindrical 

 swelling tapering at each 

 end. Red and villose like 

 The internal structure is spongy and 



Fig. 29. 



Diaslrophus fragariiv Beutin., yalls on 

 petioles of strawberry. 



the rest of the petiole. 



November, 1915. 



