A NEW JAVANESE GALL MIDGE 



(Trishormomyia pandani n. sp.) 



by 



E. P. Felt, State Entomologist, 

 Albany, New York, U. S. A. 



This large species is tentatively referred to the above named genus in 

 spite of the somew^hat long circunifila of the male because other characters 

 appear to more closely relate the insect to this genus than to any other. The 

 specimens were received from Mr. S. Leefmans, accompanied by the statement 

 that the midges were reared from galls on Pandan leaves *) found at 

 Tjibodas, Java, at an altitude of 4200 feet. Mr. Leefmans has made notes on 

 the development of the galls, the larvae, the pupae and the parasite, data 

 which appear in connection with this description. 



Male. Length 3 mm. Antennae extending to the third abdominal segment, 

 thickly haired, yellowish brown, 14 segments, the third with a length over three times 

 its diameter and slightly constricted near the middle, the fourth with a more distinct 

 basal and apical constriction and the fifth distinctly binodose, the basal part of the stem 

 with a length almost equal to its diameter, the distal part with a length about one half 

 greater than its diameter, the basal enlargement subglobose, with a thick subbasal whorl 

 of long stout setae and a subapical circumfilum, the loops being nearly as long as the 

 diameter of the enlargement and about fifteen in number. The distal enlargement with 

 a median thick whorl of long stout setae and basal and apical circumfila, the loops of 

 the former somewhat shorter than those of the distal filum which latter have a length 

 about equal to the diameter of the enlargement. Terminal segment with a transverse 

 stem, and broadly oval distal enlargement, the length being about two and one fourth 

 times greater than the diameter, and apically a fusiform appendage which may represent 

 a rudimentary segment. Palpi short, the first segment short, subquadrate, thickly haired, 



*). According information by the Botanist of the Java flora, Mr. C. A. Backer 

 Pandanus nitidus Kurz. 



