ADDITIONAL NOTES TO THE ARTICLE OF Mr. E. R FELT 

 ON JAVANESE GALL-MIDGES 



by 



W. M. DOCTERS VAN LeEUWEN 



(with 9 figures). 



Dasyneura elatostemmae Felt, forms its stem and leafgalls on a species 

 of Elatostemma. This plant occurred in great number in the ravines of Mt. 

 Oengaran In Central-Java; but as not a single specimen was in bloom then, 

 I was not able to give its right name. Therefore this gall-form has not been 

 described and taken up yet in „Einige Gallen aus Java", in which as many 

 as 700 different galls a:re described. 



The galls on Elatostemma are mostly ballshaped or rather oblong round 

 swellings of the stem and the main-nerve of the leaf. The petiole and the 

 flower-stalk can also be infected. The surface is smooth and light-green in 

 colour. Inside one can see a small larva-cell, in which the little white gall- 

 midge larva lives. The coat of the cell consists in a very watery parenchym. 

 See the accompanying figure. (Fig. 1.) I found the galls in very damp places 

 on the banks of swift-flowing streams. 



Mount-Oengaran, alt. 1000 M. May 7th 1910. (Herb. No. 4367). 



Stefanieila falcaria Felt, forms galls on the leaves of a species of Avi- 

 cennia, which was described by Bakhuizen van den Brink as: Avicennia 

 marina var. intermedia. On this plant 1 found two quite different gallmidge- 

 galls, which have been both described by me ^). From those galls I cultivated 

 the gall-formers which have been considered by Mr. Felt as belonging to the 

 same species of Stefaniella. 



1.) W. UND J. DocTERS VAN Leeuwen-Reijnvaan. Einige Gallen aus Java, 

 inter Beitrag. Marcellia. Vol. IX 1910. pag. 40. No: 96 and 97. 



