338 Annals Entomological Society of America [Vol. IX, 



This species resembles the European D. fenestrarum Fall., 

 but the acrostichal rows and abdominal pattern are sufficient 

 to show that it is different. Among our American species it will 

 be most readily confused with D. transversa Fall, and similar 

 species. The clear wings, single oral bristle, short aristal 

 branches and slender body and wings will serve to identify it. 



Drosophila modesta, n. sp. 



(^ . Arista with about six branches above and three below. Antennse 

 pale brown, third joint dark. Front over one-third width of head, 

 wider above; opaque yellow. Second orbital about one-fifth other two. 

 Second oral bristle npi^-ly as long as first. Carina broad, fiat; face 

 brownish yellow. Che^^s yellow; their greate?t width scarcely equal 

 to one-sixth greatest diameter of eyes. Eyes Wi 'i yellow pile. 



Six rows of acrostichal hairs; no prescutel ir bristles. Dorsum 

 of thorax dark dull yellowish brown. Pleurae an> ■• legs pale yellowish 

 brown. Apical and preapical bristles on first and second tibiae, pre- 

 apicals on third. 



Abdomen shining yellow; an interrupted dark brown band on the 

 posterior margin of each of the first four segments, and a median anterior 

 dark brown spot on the third, fourth and fifth segments. 



Wings with faint clouds on each cross vein and at the tips of second 

 and third veins; veins dark brown. Costal index about 4.3; 4th vein 

 index about 1.7; 5x index about 1.3; 4c index about 0,7. 



Length body 2>^mm., wings 2>^mm. 



Type, allotype and gonotypes bred in New York, N. Y., 

 from stock collected at Kushla, Alabama, April, 1915. I 

 have also examined specimens from New Orleans, La.; Rich- 

 mond, Arlington, Rosslyn, Dead Run, Va. ; Plummer's Island, 

 Md. ; Bloomington, Ind. ; New York, N. Y. The last specimens 

 were bred from cabbage in November, and I am inclined to 

 suspect were imported with the cabbage. I have also bred the 

 species from banana, grape sap, agaric, and watermelon. The 

 females agree in all respects with the description given above. 



This species is similar to D. tripunctata Lw., but differs in its 

 abdominal markings, and also in having six acrostichal rows, for 

 D. tripunctata has eight. From D. putrida ri. sp. it is easily 

 separated by the absence of presutural acrostichal bristles ; and 

 from D. transversa Fall., by its two large oral bristles. The 

 abdominal pattern and dull thorax will distinguish it from 

 D. guinaria Lw. 



