Vol. VI.] [No. 1 



ORIGINAL COMMUNICATIONS. 



1.— DESCRIPTION OF A NEW SPECIES OF OLIGOTRO- 

 PHUS FROM INDIA. 



By D. W. Coquillett. 

 {Vide Vol V, No. 3, p. 115.) 



Oligotrophus saligneus, n. sp. 



Dark brown, the head except lower part of face, mesonotum and 

 metanotum black, legs and halteres pale yellow, a pale yellow 

 humeral spot, and a larger one beneath each wing ; antennae of 

 male about half as long as the body, nineteen-jointed (2 + 17), the 

 third joint consisting of a thickened basal part about one-half longer 

 than broad and a constricted apical portion about half as lono- as the 

 thickened basal part, the latter bearing two whorls of bristly hairs j- 

 remaining joints similar but becoming successively shorter, and 

 with the constricted portion proportionately longer except between 

 the last two segments which is extremely short; antennae of female 

 about one-third as long as the body, nineteen-jointed, the third 

 joint slightly longer than broad, the following joints becoming 

 successively shorter and narrower, wings grayish-hyaline, costal 

 cell brownish, third vein (the apparent second) ending slightly above 

 the extreme wing-tip, forming an apparent continuation of the 

 small cross-vein, the latter issuing from the extreme base of the 

 fifth vein (the apparent third) ; length, 1*5 to 2 mm. Two males 

 and three females, bred May 4, 1901, from galls 1 on Salix elegans by 

 (the late) Mr. Lionel de Nicevelle. 



Habitat : Tehri Garhwal, North-Western Himalayas. Elevation 

 9,000 feet. 



Gall formed on the stems or branches, sometimes affecting only 

 one side of the stem or branch, at other times extending wholly 

 around it, the smaller galls measuring from 7 to 16 mm. long, the 

 larger ones 70 mm. long by 20 wide ; outwardly the galls are bare, 

 and present a somewhat blistered appearance. 



1 These galls were sent to the Indian Museum, Calcutta, from the Himalayas. 

 The insects were bred out in the Museum. — Ed. 



B 



